You want to use nodemon to watch the node_modules directory for a certain project. However, you do not want this config to affect your other projects.

Which of the following would be an appropriate way to do so in the given scenario?

Options

1. Override the ignoreRoot config in your local nodemon.json
2. Override the ignoreRoot config in your $HOME/nodemon.json
3. Override the watchmodule config in your local nodemon.json
4. Override the watchmodule config in your $HOME/nodemon.json

Each request to a web server takes 40 ms to complete, and 35ms of that 40ms is database I/O that can be done asynchronously.

Which of the following operations will you use if you want that 35ms per request to get freed up to handle other requests?

Options

1. Non-blocking asynchronous operations
2. Blocking asynchronous operations
3. Non-blocking synchronous operations
4. Blocking synchronous operations

You need to (hypothetically) find a certain temporary file of your application using npm. Assuming that the default locations were used, which of the following environment variables determines where the file is?

Options

1. TMPDIR
2. TMP
3. TEMP
4. Any of the above

You want to override the default behaviour of the REPL evaluation function used in Node. Which of these would you add the alternative evaluation function to in the given scenario?

Options

1. repl.REPLServer
2. Config.REPLServer
3. Socket.REPLServer
4. override.REPLServer

In the given code snippet, you have to replace XXXXX with a certain method to get the desired output.

function timerExample() {

console.log('Time!');

}

XXXXX(tierExample, 1000);

What is the correct combination of the method and desired output by substituting that method in place of XXXXX?

Options

1.XXXXX - setTimeout()

Result - timerExample() will execute after any I/O operations(if used) in the current event loop

2.XXXXX - setinterval()

Result - timerExample() will execute about every 1 second until it is stopped

3.XXXXX - setTimeout()

Result - timerExample() will execute as close to 1000 millisecond

4.XXXXX - process.nextTick()

Result - timerExample() will execute as close to 1000 millisecond

On a Windows machine that has gitbash, you would like to generate an SSH key and add it to the ssh agent for Github. What would be your first command after generating and saving the key?

Note: id_rsa is a key name

Options

1. ssh-add ~/.ssh/id_rsa
2. eval $(ssh-agent -s)
3. ssh-keygen -t rsa -b 4096
4. None of the above

A piece of code is scheduled to execute after a designated amount of time. You realize that execution needs to be cancelled.

If used for scheduling the code execution, which of the following would prevent cancelling the same?

Options

1. setInterval()
2. setImmediate()
3. process.nextTick()
4. setTimeout()

In the process of creating a scoped public package, you have created a scoped package that has the user scope. What command would you use to publish this?

Note: username is "username"

Options

1. npm publish --access public
2. npm publish --access username
3. npm publish --scope username -access public
4. npm publish ---scope=@username -access public

Which of these are likely to be returned by the method shown below if the callback parameter of the argument list is omitted?

query (command, [callback])

Options

1. Await
2. Promise
3. Resultset
4. This will result in compile time error

In Node.js, you use the .pipe() function to transfer data from one process to another. Unfortunately, the write queue is currently busy and so .write() returns a false value.

Which of the following events will be emitted once the data buffer is emptied to resume the incoming data flow in this situation?

Options

1. .drain()
2. .read()
3. .transform()
4. .duplex()

ou want to generate a list of words while working with Elixir.

Which of the following sigils can be used to achieve this?

Options

1. ~c
2. ~s
3. ~w
4. ~r

Determine the output of the given code snippet in Elixir.

[head | _] = [3,6,9] #line1

head * 2 #line2

_ * 3 #line3

Options

1.[6,12,18]

[9,18,27]

2.[3,6,9]

[3,6,9]

3.Compilation error at line 1

4.Compilation error at line 2

5.Compilation error at line 3

What happens when following line of code is run in Elixir?

length([1, [2], 3]) = 3

Options

1. All values of length will be set to 3.
2. A Compile Error is thrown
3. A Match Error is thrown
4. The first value of length is set to 3

Which of these callbacks can be used to verify the arguments given to the provider and prepare the state that will be given to load/2?

Options

1. init/1
2. init/3
3. link/3
4. spawn/1

Which of the following files need to be edited to include the crypto module in Elixir?

Options

1. mix.exs
2. mix.logger
3. mix.repo
4. mix.store

You have created two callbacks X and Y in Elixir. You now want to annotate X and Y to inform the compiler that your intention for the subsequent function definition is to define a callback.

Which of these annotations should you use to achieve this?

Options

1. @impl true
2. @impl false
3. @doc
4. @impl doc
5. @doc true

What does the following configuration file do when implemented in Logger?

config :logger,

compile_time_purge_matching: [

[application: :abc],

[module: Sample, function: "abc/3", level_lower_than: :error]

]

Options

1. It purges all log calls from an application named :abc.
2. It only keeps errors from Sample.abc/3
3. Both Choice 1 and 2
4. It does not do anything.

What can be said about the codes A and B given below?

A:

[1, [2], 3]

|> List.flatten()

B:

[1, [2], 3]

v() |> List.flatten()

Options

1. Both A and B are equivalent.
2. Both A and B are not equivalent.
3. A will run without error but B will throw errors.
4. B will run without error but A will throw errors.

Analyze the snippet given below and determine its output.

{a, a} = {4, 7}

Options

1. 4
2. 7
3. 11
4. A (MatchError) will occur

You have set the following configuration via config files before the :logger application is started.

:compile_time_purge_matching

What will happen to logger calls with a level lower than the above given option?

Options

1. They will be completely removed at compile time.
2. They will cause overhead during runtime.
3. They will be ignored during runtime.
4. None of these

You have a table ABC with columns a and b. You now want to use a multiple-argument aggregate function to display a in descending order of b. To do this, you have written the following two queries.

A:

SELECT string_agg(a, ',' ORDER BY b) FROM ABC;

B:

SELECT string_agg(a ORDER BY b, ',') FROM ABC;

Which of these queries is an incorrect way to implement the given objective?

Options

1. Only A
2. Only B
3. Both A and B
4. Neither A nor B

You want to update existing rows of a column using the UPDATE command. Which of these informations is/are mandatory when doing this?

1. The name of the table and column to update.

2. The new value of the column.

3. The rows that need to be updated.

Options

1. Only 1 and 3
2. Only 2 and 3
3. All 1, 2 and 3
4. Insufficient information

How does PostgreSQL link rows in separate tables?

Options

1. It uses foreign key and primary key linking in its internal system tables
2. it uses a JSON file to store the links
3. It uses reverse indexing
4. None of these

Assume that you have turned off autocommit and just done one commit at the end when performing multiple INSERTs.

In the given scenario, what will PostgreSQL do if the insertion of one row fails?

Options

1. The insertion of all rows inserted up to that point would be rolled back.
2. PostgreSQL only loads partial data.
3. All insertions are discarded.
4. None of these

You have opened a cursor variable and given it a specific query to execute as follows:

OPEN curs1 FOR EXECUTE format('SELECT * FROM %I WHERE col1 = $1',tabname) USING keyvalue;

Which of the following can be inferred from the given statement?

Options

1. The table name is inserted into the query via format() and comparison value for col1 is inserted via a USING parameter.
2. The table name is inserted into the query via format() along with the comparison value for col1.
3. The table name is inserted into the query along with the comparison value for col1 is inserted via a USING parameter.
4. The table name is inserted into the query via a USING parameter.

Assume that you are using the following command to convert a column to a different data type.

ALTER TABLE products ALTER COLUMN price TYPE numeric(10,2);

Which of these choices is/are TRUE in the given scenario?

Options

1. This will succeed only if each existing entry in the column can be converted to the new type by an implicit cast.
2. PostgreSQL will attempt to convert the column's default value (if any) to the new type, as well as any constraints that involve the column.
3. Both Choice 1 and 2
4. None of these

You come across the following query when working in PostgreSQL.

SELECT a FROM b UNION SELECT x FROM y LIMIT 10

Which of these choices correctly depicts how this query is evaluated?

Options

1. It is evaluated as (SELECT a FROM b UNION SELECT x FROM y) LIMIT 10
2. It is evaluated as SELECT a FROM b UNION (SELECT x FROM y LIMIT 10)
3. It throws a syntax error
4. It throws a runtime error

You are inserting a lot of data at the same time into your table when working with PostgreSQL. You want to do this in the most efficient way possible.

Which of these commands will help you achieve your objective?

Note: You can ignore the flexibility of the command.

Options

1. COPY command
2. INSERT command
3. UPDATE command
4. Both Choice 1 and 2
5. Both Choice 2 and 3

Which of these commands can you use to check whether PostgreSQL service is running on Linux machines(Ubuntu destro)?

Options

1. sudo service status -postgresql
2. sudo service postgresql status
3. sudo service postgresql -all
4. sudo service postgresql -status

You are analyzing the REST Architecture of a system. In the given context which of these benefits would you attribute to cache constraints?

1. Improved efficiency

2. Improved scalability

3. Improved user-perceived performance

Options

1. Only 1
2. Only 2
3. Only 3
4. Only 1,2
5. All 1,2,3

Predict the output of the following code snippet.

#include<iostream>
using namespace std;
class A
 { 
 public: 
 virtual void function1() {cout<<"A :: function1()\n";}; 
 virtual void function2() {cout<<"B :: function2()\n";}; 
 virtual ~A(){};
}; 
 
class B: public A 
{ 
public: 
 ~B(){};
 virtual void function1_virtual() 
 { 
 cout<<"B :: function1()\n";
 
 }; 
	
}; 

int main() 
{ 
	B *b = new B; 
	A *a = b; 
	a->function1();
 a->function2();
 delete (a);
 
 return (0);
}

Options

1. A :: function1()
2. B :: function2()
3. A :: function1(),B :: function2()
4. B :: function2(),A :: function1()

It is given that resource acquisition fails when using the Resource Acquisition Is Initialization in C++.

What happens to all resources acquired by every fully-constructed member and base subobject as a result of this?

Options

1. They are released in reverse order of initialization.
2. They are released in reverse order of acquisition
3. They are destroyed
4. None of these

You want to prevent unrecoverable destruction of resources when working with the move assignment operator in C++.

Which of these actions if taken will help you achieve this?

Options

1. Properly handle self-assignment in the move assignment operator.
2. Free resources such as memory and file handle.
3. Provide move constructor along with the move assignment operator
4. None of these

You want to use the resource via an instance of a RAII-class. In which of the given scenarios can this be achieved?

1. The RAII-class has automatic storage duration.

2. The RAII-class has lifetime that is bounded by the lifetime of an automatic object.

Options

1. Only 1
2. Only 2
3. Both 1 and 2
4. Neither 1 nor 2

//Line1
template <class T>
class mycontainer {
 //some code
};

// Line2
template <>
class mycontainer <char> {
 char element;
 public:
 mycontainer (char arg) {element=arg;}
 //some code
};

Analyse the code snippet given above and choose the correct inferences that can be made.

Options

1. Line 2 defines the class template specialization
2. Line1 defines the class template specialization
3. Line 2 defines the generic class template
4. Both L1 and L2 are part of the class template specialization

Which of these code snippets are valid examples of rvalue expressions in C++?

1.

int a;
int& sample () 
{
 return a;
}
 
sample() = 1;

2.

int a;
int sample ()
{
 return a;
}
sample;

Options

1. Only 1
2. Only 2
3. Both 1 and 2
4. Neither 1 nor 2

Predict the output of the following code snippet.

using namespace std;
class A
{
 public:
 ~A() 
 {
 cout << "Destructor of class A\n"; 
 }
};
class B:public A
{
 public:
 ~B() 
 { 
 cout<< "Destructor of class B\n"; 
 }
}; 
int main()
{
 A* a = new B; 
 delete a;
}

Options

1. Destructor of class A
2. Destructor of class B
3. Destructor of class ,Destructor of class B
4. Destructor of class B,Destructor of class A

You want to use the accumulate function of the <numeric> header in C++ to return the result of accumulating all the values in the range [first,last) to init.

Which of these code snippets is equivalent to the behaviour of the accumulate function?

Options

1.template <class InputIterator, class T>
 T accumulate (InputIterator first, InputIterator last, T init)
{
 while (first!=last) {
 init = init + *first; ++first;
 }
 return init;
}
2.template <class InputIterator, class T>
 T accumulate (InputIterator first, InputIterator last, T init)
{
 while (first!=last) {
 init=binary_op(init,*first)
 ++first;
 }
 return init;
}
3.Both 1 or 2

4.None of these

Which of these lambda expressions can be used in place XXX to produce the output as 18?

#include 
 
int main()
{
 using namespace std;
 
 XXX
 
 cout << result << endl;
}

Options

1.int result = [](int x) { return [](int y) { return y * 3; }(x) + 3; }(5);

2.int result = [](int x) { (int y) { return y * 3; }(x) + 3; }(5);

3.Either 1 or 2

4.Neither 1 nor 2

Analyse the code snippet given below and choose the correct option.

void funtion1(int (*)(int)) {}
void function2(char (*)(int)) {}
void function3(int (*)(int)) {} // #1
void function3(char (*)(int)) {} // #2
auto samplelambda = [](auto a) { return a; };
function1(samplelambda); // Line1
function2(samplelambda); // Line2
function3(samplelambda); // Line3

Options

1. Line 2 and Line 3 will throw an error
2. Only Line 2 will throw an error
3. Only Line 3 will throw an error
4. Only Line 1 and Line 3 will throw an error

Which of the following statements regarding OOPS in PHP is/are true?

S1: __construct() function is used to define constructor in PHP.

S2: While writing a code in PHP to provide a common function names to the implementers you may use interfaces.

Options

1. $1
2. $2
3. $1 and $2
4. None

You want to delete or flush all the files from a particular folder location using PHP.

Which of these code snippets can be used to achieve this objective?

Note: Assume folder path is “path/to/temp/”.

Options

1.$files = glob('path/to/temp/*');

foreach($file in $files){

if(is_file($file))

unlink($file);

}

2.$files = glob('path/to/temp/*');

foreach($files as $file){

if(is_file($file))

unlink($file);

}

3.$files = glob('path/to/temp/*');

foreach($files as $file){

if(is_file($file))

delete($file);

}

4.$files = glob('path/to/temp/*');

foreach($file in $files){

if(is_file($file))

delete($file);

}

Analyze the below given snippet and choose the most optimized version that executes the similar functionality.

for( $i=0; i< count($arrB); $i++){

echo count($arrB);

}

Options

1.for( $i=0; i< $len; $i++){

$len = count($arrB);

echo $len;

}

2.$len = count($arrB);

for( $i=0; i< $len; $i++){

echo $len;

}

3.While( $i< $len){

$len = count($arrB);

echo $len;

$i++;

}

4.for( $i=0; i< $len; $i++){

$len = count($arrB);

}

echo $len;

}

Assume that you have used a finally block after a try-catch block when working in PHP. In which of the given scenarios will the finally block NOT be executed?

1. A return statement is encountered inside either the try or the catch blocks.

2. The finally block contains a return statement.

Options

1. Only 1
2. Only 2
3. Both 1 and 2
4. Neither 1 nor 2

Predict the output of the following code snippet.

<?php

function sample() {

try {

throw new Exception('Hello World');

} catch (Exception $e) {

return 'catch';

} finally {

return 'finally';

}

}

echo sample();

?>

Options

1. Hello World
2. catch
3. finally
4. None of these

Predict the output of the following code snippet.

<?php

$a = array(

0=>"ONE",

2=>"TWO");

$b = array(

1=>"Three",

2=>"Four");

foreach(($a + $b) as $key=>$value)

{

print("$key: $value\n");

}

?>

Options

1.0: ONE

2: TWO

1: THREE

2: TWO

2.0: ONE

2: TWO

1: THREE

2: FOUR

3.0: ONE

2: TWO

1: THREE

4.None of these

You have created a backed enum "Fruit" as follows in PHP.

<?php

enum Fruit: string

case Apple = 'A';

case Lemon = 'L';

case Orange = 'O';

case Tomato = 'T';

}

?>

In the given context, what will happen if a variable is assigned as a reference to the backed case Lemon?

Options

1. The value property of Lemon is enforced to be read-only
2. The following error is thrown:
3. Error: Cannot acquire reference to property Fruit::$value
4. The value L is printed
5. A ValueError is thrown

You have created two classes named A and B such that A is the parent of B. You have also defined a constructor C inside the child class B.

Which of these choices is/are true regarding A's constructor?

Options

1. It is called implicity
2. It is not called implicity
3. It is run insider B
4. None of these

In order to increase security, you have decided to put the PHP parser binary in /usr/local. Which of the following is/are some downsides of doing this?

A. PATH_INFO and PATH_TRANSLATED need to be configured

B. Any file containing PHP tags would need an additional first line

C. Any file containing PHP tags would need to be made executable

Options

1. A
2. A,B
3. B,C
4. A,B,C

You have used the below given method to set the persistence mode for a soap server using PHP 5.

SOAP_PERSISTENCE_SESSION

The persistence of which of the following is/are unlikely to be affected in the given scenario?

1. Objects of the class.

2. Static data member of the class.

Options

1. Only1
2. Only 2
3. Both 1,2
4. Neither 1 nor 2

Predict the output of the following code snippet.

func main() {
 var X interface{}
 
 switch i := X.(type){
 case nil: 
 fmt.Printf("X is :%T",i) 
 case int: 
 fmt.Printf("X is int") 
 case float64:
 fmt.Printf("X is float64") 
 case func(int) float64:
 fmt.Printf("X is func(int)") 
 case bool, string:
 fmt.Printf("X is bool or string") 
 default:
 fmt.Printf("Don't Know") 
 } 
}

Options

1. X is int
2. X is bool or string
3. X is func(int)
4. X is :<nil>

How many times will the "for" loop execute in the following code snippet?

package main
import "fmt"

func main(){
 
 var a int = 2
 var b int = 5
 var expression_1 int
 var expression_2 int
 expression_1 = (5*a - 2*b)
 expression_2 = (4*a + 8*b) % (b-1)

for expression_1 = expression_2 {
 expression_1+= 5
 fmt.Println(expression_1)
 expression_2--
 fmt.Println(expression_2)
 }
}

Options

1. 0
2. 1
3. 2
4. Infinite

You have a Go program that consists of various tokens.

Which of these tokens can you use to recognize a user-defined item?

Options

1. Whitespace
2. Comments
3. Keywords
4. Identifiers

Predict the output of the following code snippet.

func Sqrt(num float64)(float64, error) {
 if(num < 0){
 return 0, errors.New("The result is a Complex Number")
 }
 return math.Sqrt(num), nil
}

func main() {
 output, error:= Sqrt(-4)

 if error != nil {
 fmt.Println(error)
 }else {
 fmt.Println(output)
 }
 
 output, error = Sqrt(256)

 if error != nil {
 fmt.Println(error)
 }else {
 fmt.Println(output)
 }
}

Options

1.2

16

2.16

2

3.Error

4.16

The result is a Complex Number

5.The result is a Complex Number

16

What output will be produced when the following code snippet is executed?

func Sequence() func() int {
 i:= 0
 return func() int {
 i+=1
 return i 
 }
}

func main(){

 num := Sequence() 

 fmt.Println(num())
 fmt.Println(num())
 fmt.Println(num())
 
 num1 := Sequence() 

 fmt.Println(num1())
 fmt.Println(num1())
}

Options

1.1

2

3

1

2

2.0

1

2

0

1

3.1

2

3

4

5

4.0

1

2

3

4

What will be displayed on the screen when the following code snippet is executed?

package main

import "fmt"

func main() {
 
 var X int = 020
 var Y float64 = 10.5
 var Z float64
 
 Z = float64(X)-float64(Y)
 fmt.Println(Z)
}

Options

1. 9.5
2. 4.5
3. 5.5
4. Error

Which of the following intializations will throw an error in Go?

1. a := [...]string {Enone: "no error", Eio: "Eio", Einval: "invalid argument"}

2. m := map[int]string{Enone: "no error", Eio: "Eio", Einval: "invalid argument"}

Options

1. Only 1
2. Only 2
3. Both 1 and 2
4. Neither 1 nor 2

You decide to defer a function call when coding in Go. What is the benefit of doing this?

1. It guarantees that you will never forget to close the file.

2. The parameters of this function are initialized to zero values by default.

Options

1. Only 1
2. Only 2
3. Both 1 and 2
4. Neither 1 nor 2

You are using the following code snippet to loop through an array using for.

sum := 0
XXX, value := range array {
 sum += value
}

What can be used in place of XXX if you need the second item in the range and discard the first?

Options

1.for ?
2.for ;;

3.for _

4.for (;)

Consider the following code snippet.

type SyncedBuffer struct {
 lock sync.Mutex
 buffer bytes.Buffer
}
p := new(SyncedBuffer) 
var v SyncedBuffer 

Which of these deductions can be made about the values p and v?

Options

1. Both p and v will work correctly without further arrangement.
2. Both p and v will NOT work correctly without further arrangement.
3. Only v will work correctly without further arrangement.
4. Only p will work correctly without further arrangement.

You want to run a 802.11 packet injection program while running a exploit using Aircrack.

In the given context, which of these tools provided with Aircrack are you likely to use for this purpose?

Options

1. aireplay
2. airodump
3. airdecap
4. airowiz

Which of these symptoms observed while monitoring telemetry is indicative of a Session Hijacking attempt?

Options

1. Telnet sessions start freezing
2. a sudden burst of network activity for a short period,
3. Repeated ARP updates
4. Choice 1 and Choice 3
5. All of the given options

You have encrypted packets that have been gathered during reconnaissance.

In the given context, which of these tools can be used for cracking the encryption?

Options

1. Aircrack
2. Cain and Abel
3. John the Ripper
4. All of the given options

An OpenSSH server needs to be attacked by loading a user defined library with SSH server rights.

Which of these program executions would be required to successfully perform this attack?

Options

1. /bin/login
2. /bin/RSA
3. /bin/RSA_Generation
4. /bin/Root

Which of the following information can be gathered by performing DNS enumeration on a Network?

1. usernames

2. computer names

3. IP addresses of potential target systems.

Options

1. Only 1,2
2. Only 2,3
3. Only 1,3
4. All 1,2,3

The following IP address in the web logs is found connecting to contiguous ports and each of its connections always have a time_wait status.

192.168.3.4

What kind of attack is the compromised IP executing?

Options

1. DDOS
2. Clickjacking
3. Session hijack
4. XSS

You are using a binary file payload delivery from a FTP server during a bounce attack to breach a network.

Which of these logs would you modify/corrupt to stop the network administrator from identifying the source of the attack?

Options

1. Crash Log
2. Session Log
3. Error Log
4. None of these

You want to perform a reflection-based distributed denial of service (DDoS) attack that turns a small DNS query into a much larger payload.

Which of these extensions to the DNS protocol for a DNS request can be used to do so?

Options

1. EDNS0
2. WDNS8
3. FDNS1
4. KDNS2

Which of the following information can be gathered by performing a NetBIOS Enumeration on a Network?

1. List of computers that belong to a domain.

2. List of shares on the individual hosts on the network.

3. Policies and passwords.

Options

1. Only 1,2
2. Only 2,3
3. Only 1,3
4. All 1,2,3

You want to use the Firewall level detection mechanism to monitor any port scanning activity in a network that needs to be exploited.

Which of these port scanning techniques would you use to infiltrate the network without being detected?

Options

1. SYN Scan
2. ACK SCAN
3. TCP connect()
4. FTP Bounce Scan

A component that uses state has two snippets of code as given here

A

<h1>It is {this.state.date.toLocaleTimeString()}.</h1>

B.

<MyStuff thing={this.state.thing} />

Which of the snippets may lead to issues in the architecture?

Options

1. Both A and B are fine. The children receive the state as props
2. Yes, this is fine for A but not for B since user defined components would have their own state
3. Yes, this is fine for A but not for B since user defined components would have their own stateYes, this is fine for B, but not for A, since the state can be modified in the child with unpredictable consequences
4. No, this is not fine for either A or B since the state may be cascaded and would lead to unpredictable re-rendering

You are using the express-session middleware for cookie session maintenance.

What consideration would you need to take in case you want to use this for a production environment?

Options

1. You should never use it in a production environment
2. You should use an in-memory store in the production environment
3. You should set up a session store for the production environment
4. No changes are necessary

Which of the following code snippets would successfully convert any expression into a delegate?

Options

1.Expression<Func<int>> subtract = () => 4 -3;
var sub = subtract.Compile();
var result = sub(); 
Console.WriteLine(result);
2.Expression<Func<int> subtract ()> => 4 -3;
var sub = compile(subtract);
var result = sub(); 
Console.WriteLine(result);

3.Either 1 or 2

4.None of these

When adding styles to a page, you want to link the CSS file to a page and place the link in the head section of the page after the CSS Link SharePoint control.

In the given scenario, which of these style sheets should you use keeping in mind its ease of maintainance and flexibility?

Options

1. Internal Style Sheets
2. Cascading Style Sheets
3. External Style Sheets
4. None of these

What will be the color of the child p tag contents when the HTML5 snippet given below is rendered?

<p style = "color: green">
        hello 
    <p style = "color: red"> 
            world 
    </p>
</p>

Options

1. green
2. red
3. yellow
4. black

What is the result of compiling and executing the code snippet given below?

1. class Outer_Demo {
2. private int num = 175; 
3. public class Inner_Demo {
4. public int getNum() {
5. 
6. return num;
7. }
8. }
9. }
10.
11. public class My_class2 {
12. public static void main(String args[]) {
13. Outer_Demo outer = new Outer_Demo(); 
14. Outer_Demo.Inner_Demo inner = outer.newInner_Demo();
15. System.out.println(inner.getNum());
16. }
17. }

Options
1.175
2.Compilation error at line 14

3.Compilation error at line 15

4.Runtime error

You are using the following angular code to pass data from parent to child with input binding.

import { Component, Input } from '@angular/core';

import { Hero } from './hero';

@Component({
 selector: 'app-hero-child',
 template: `
 
{{hero.name}} says:

I, {{hero.name}}, am at your service, {{masterName}}.

 `
})
export class HeroChildComponent {
 @Input() hero: Hero;
 XXX
}

What can be used in place of XXX to alias the child component property name masterName as 'master'?

Options

1.@Input('master') masterName;
2.@Input('master') masterName: string;

3.@Input(master) 'masterName';

4.@Input(master:string) 'masterName';

Which of these code snippets can be used to refactor the below given code?

@Component({...})
export class AppComponent implements OnInit {
 @ViewChild('username') input: ElementRef<HTMLInputElement>;

 ngOnInit() {
 console.log(this.input);
 }
}

Options

1.@Component({...})
export class AppComponent implements AfterViewInit {
 @ViewChild('username') input: ElementRef<HTMLInputElement>;

 ngAfterViewInit() {
 console.log(this.input);
 }
}
2.@Component({...})
export class AppComponent implements AfterViewInit {
 @ViewChild('username') input: ElementRef<HTMLInputElement>;

 ngAfterViewInit() {
 console.log(this.input);
 }
}

3.@Component({...})
export class AppComponent implements OnInit {
 @ViewChild('username') input: ElementRef<HTMLInputElement>;

 ngAfterViewInit() {
 console.log(this.input);
 }
}

@Component({...})
export class AppComponent implements OnInit {
 @ViewChildren('username') input: ElementRef<HTMLInputElement>;

 ngOnInit() {
 console.log(this.input);
 }
}

4.None of these

<nav> 
 <a class="button" routerLink="/A-list" routerLinkActive="activebutton">A Center</a> | 
 <a class="button" routerLink="/B-list" routerLinkActive="activebutton">B</a> 
</nav>

Which of the following interferences can be made with respect to the code snippet given above?

1. As you click one of the buttons, the style for that button updates automatically, identifying the active component to the user.

2. By adding the routerLinkActive directive, you inform your application to apply a specific CSS class to the active route.

Options

1. Only 1
2. Only 2
3. Both 1 and 2
4. Neither 1 nor 2

Which of these deductions can be made from the code snippet given below?

class A
{
{
System.out.println(1);
}
}
class B extends A
{
{
System.out.println(2);
}
}
class C extends B
{
{
System.out.println(3);
}
}
 
class D extends B
{
{
System.out.println(4);
}
}

Options

1. Class A is the only child of class C because it comes after class B and therefore overrides it
2. Class B is a child for two different classes
3. Class B is a parent to both classes C and D
4. Class C is only a parent to class B
5. Class D is a child of class A because it is underneath it

What is the result of compiling and executing the code snippet given below?

1. class Outer_Demo {
2. private int num = 175; 
3. public class Inner_Demo {
4. public int getNum() {
5. 
6. return num;
7. }
8. }
9. }
10.
11. public class My_class2 {
12. public static void main(String args[]) {
13. Outer_Demo outer = new Outer_Demo(); 
14. Outer_Demo.Inner_Demo inner = outer.newInner_Demo();
15. System.out.println(inner.getNum());
16. }
17. }

Options

1. 175
2. Compilation error at line 14
3. Compilation error at line 15
4. Runtime error

You implemented the two functional interfaces, as shown in the Java 8 code snippet given below.

public class University{
@FunctionalInterface
interface TheoryMarks{
abstract float theoryMarks();
 }
@FunctionalInterface
interface PracticalMarks extends TheoryMarks{
abstract float practicalMarks();
public static void printMarks() {
System.out.println("Calculation of marks");
 }}}

However, the code is returning a compilation error. What could be the reason for receiving this compilation failure?

Options

1. Static method is defined after the abstract method
2. A functional interface cannot extend another functional interface
3. The PracticalMarks interface will have two abstract method
4. Methods are not mentioned as public abstract

A component that uses state has two snippets of code as given here

A<h1>It is {this.state.date.toLocaleTimeString()}.</h1>

B.<MyStuff thing={this.state.thing} />

Which of the snippets may lead to issues in the architecture?

Options

1. Both A and B are fine. The children receive the state as props
2. Yes, this is fine for A but not for B since user defined components would have their own state
3. Yes, this is fine for B, but not for A, since the state can be modified in the child with unpredictable consequences
4. No, this is not fine for either A or B since the state may be cascaded and would lead to unpredictable re-rendering

You want to test a component in react in isolation without wrapping it.

What feature of method React.createContext would be useful for testing if it is used to create a context object?

Options

1. The use of the defaultValue argument
2. The ability to pass undefined as a Provider value
3. The ability to assign contextType property
4. None of these

You have to reset some state when a prop changes using the getDerivedStateFromProps(). However, you observe that this make your code verbose.

Which of these steps should you take to avoid this?

Options

1. Make the component fully controlled or fully uncontrolled with a key
2. Use componentDidUpdate lifecycle
3. Use a memoization helper
4. Make the child components to re-render

You are using the following code to extract previous props/state while using hooks(not custom hooks).

function Counter() {
 const [count, setCount] = useState(1);

 X

}

What can be used in place of X to complete it?

Options

1.const prevCountRef = useRef();
 useEffect(() => {
 prevCountRef.current = count;
const prevCount = prevCountRef.current
 });
2.const prevCountRef = useRef();
 useEffect(() => {
 prevCountRef.current = count;
 });
 const prevCount = prevCountRef.current;

3.function usePrevious(value) {
 const ref = useRef();
 useEffect(() => {
 ref.current = value;
 });
 return ref.current;
}

4.function usePrevious(value) {
 const ref = useRef();
 useEffect(() => {
 ref.current = count;
 });
 return ref.current;
}

You have a requirement wherein you have to render a React element into a root DOM node.

What will you pass to the ReactDOM.render() method to do so?

Options

1. React Element
2. Root DOM node
3. Both React element and Root DOM node
4. React element along with an empty text node

Which of these state variable assignments using the state hooks are valid?

A:

 const [item, setItem] = useState(4);

B:

 const [foo, setFoo] = useState('text');

C:

 const [stuff, setStuff] = useState([{ text: 'things' }]);

Options

1. A
2. A,B
3. B,C
4. A,B,C

What can be said about the React v17 code snippet given below?

this.setState({
 counter: this.state.counter + this.props.increment,
});

Options

1. The counter is updated successfully
2. It may fail to update the counter
3. this.state and this.props update synchronously
4. Both Choice 1 and 3
5. Both Choice 2 and 3

Which of the following components declared in React v17.0.1 is pure?

//Function1 
function sub(a, b) {
 return a - b;
}

//Function2 
function del(a, b) {
 at.total -= b;
}

Options

1. Function1
2. Function2
3. Both Function1 and Function2
4. Neither Function1 nor Function2

You have built a component X when working in React. Now, you want to reuse X's logic using a higher order component.

What can you do to achieve this?

Options

1. Modify the input component
2. Use inheritance to copy X's behavior
3. Compose the component 'X' by wrapping it in a container component
4. None of these

Which of the following are valid statements that can be made about the Dependency Injection design pattern?

S1: The injector class of the DI pattern creates an object of the service class.

S2: The DI pattern separates the responsibility of creating an object of the service class out of the client class.

Options

1. Only S1
2. Only S2
3. Both S1 and S2
4. Neither S1 and S2

You are building an Android application in React native.

In the given context, which of these properties can be used to utilize TalkBack to alert the end user when a component changes dynamically?

Options

1. accessibilityViewIsModa
2. accessibilityLiveRegion
3. accessibilityVoiceAlert
4. AccessibilityDetectChange

When building a website using React Native. You want to ensure that when a user presses the back button, the browser pops the item from the top of the history stack, so the active page is the previously visited page.

How can this be accomplished?

1. This can be accomplished using the built-in idea of a global history stack like a web browser does.
2. This can be accomplished using React Navigation

Options

1. Only 1
2. Only 2
3. Both 1 and 2
4. Either 1 or 2

You want to use ImageViews in JavaScript while building an Android application in React native.

Which of these annotations can be used to expose view property setters while doing so?

Options

1. @ReactProp
2. @ReactPropGroup
3. @ReactComponent
4. Only Choice 1 and Choice 2
5. Only Choice 1 and Choice 3

You see margins and padding when you tap on an animated gif in a React native view. Which of these can be used to make live changes to styles in the given context?

1) Built-in inspector

2) Hot reloading

3) React inspector

Options

1. 1,2
2. 2,3
3. 1,3
4. 1,2,3

Read the following statements about touchable highlights and choose the right answer.

1) When a user presses the touchable highlight, it will get lighter and the underlying color will show through.

2) When a user uses touchable native feedback, it will simulate ink animation.

Options

1. Statement 1 is true and statement 2 is false
2. Statement 1 is false and statement 2 is true
3. Both statements are true
4. Both statemnts are false

You are adding alignment to a component's style in React native to determine the alignment of children along the secondary axis.

If you have chosen the alignment as 'stretch', which of the following components will allow the stretch to have an effect?

Options

1. Children having a fixed dimension along the secondary axis
2. Children not having a fixed dimension along the secondary axis
3. Children having a fixed dimension along the primary axis
4. Children having a variable dimension along the primary axis

What can be the most appropriate reason if you are faced with the following error?

> Invariant Violation: Element type is invalid

Options

1. This error occurs when you are trying to use a font that is not bundled with the platfrom
2. This error occurs when Linking has not been completed
3. This error occurs when you are misssing some packages after a git pull
4. This error occurs when trying to import a component that doesn't exist

Which of these StyleSheet API methods in React native can be used to lookup IDs, returned by StyleSheet.register?

Options

1. flatten
2. compose
3. StyleAttributePreprocessor
4. getStyleAttributePreprocessor

The code snippet given alongside is used to detect which platform the React Native application is running on. Which of the given alternative methods can be used for the same purpose?

clickMe() {

var message = ‘';

if(Platform.OS == ‘ios') {

message = ‘Welcome to iOS!';

} else if(Platform.OS == ‘android') {

message = ‘Welcome to Android!';

}

Alert.alert(message);

}

Options

1. You can use the select method
2. You can use the virtual DOM method
3. You can use the render method
4. There is no alternative method

Which of these are valid use cases for React Native - View?

1) View also supports synthetic touch events, which can be useful for different purposes

2) When you need to wrap your elements inside the container, you can use View as a container element

Options

1. 1
2. 21
3. 1 and 2
4. None of these

You are using the following line of code to hide elements under a certain condition when using element UI for vue 2.0.hidden-md-and-down Which of these files should be imported to do so?

Options

1. element-ui/lib/theme-chalk/disp.css
2. element-ui/lib/theme-chalk/display.css
3. element-ui/theme-chalk/display.cs
4. element/lib/theme-chalk/display.css

You have written the code given below in vue 1.x.

props: {
 name: {
    type: String,
    coerce: function (value) {
      return value
        .toLowerCase()
        .replace(/\s+/, '-')
    }
  }
}
If you port the same code to vue 2.x, what would be the equivalent code?

Options

1.props: {
  name: String ::coerce: {
  name: function () {
    return this.name|.toLowerCase()
      .replace(/\s+/, '-');
  }
}
2.props: {
  name: String=>coerce: {
  normalize().name: function (){
    return this.username
      .toLowerCase()
      .replace(\s+/, '-')
  }
}

3.props: {
  name: String,
},
computed: {
  normalized name: function () {
    return this.name
      .toLowerCase()
      .replace(/\s+/, '-')
  }
}

4.props: {
  name: String,
},
computed: {
      return this.name
      .toLowerCase()
      .replace(\.()s+/, '-')
  }
}

You are required to render server side routing for large bundles such that the amount of assets that need to be downloaded for the intial render is reduced.

Which of the following method should you implement to achieve this?

Options

1. Data Pre-Fetching
2. Code-Splitting
3. Routing
4. Server store fetching

You are using the following nested path when creating a router for your application./members Is this a valid path? If so, what can it be used for?

Options

1.No, it is not a valid path

2.Yes, it is a valid path and can be used to leverage component nesting without having to use a nested URL

3.Yes, it is a valid path and can be used to impelment component nesting without using the children option is just another Array of route configuration objects

4.Yes, it is a valid path and can be used to impelment component nesting without using sub route matching

You need to create sequential entrance animation in your UI.

Which of the following options is the correct way to do so for a Vue.js plugin?

Options

1.Vue.use(animation);
<template>
  <sequential-entrance>
    <div class="box" v-for="app in apps" :key="app">{{ app }}</div>
  </sequential-entrance>
</template>
2.Vue.use(SequentialEntrance);
<template>
  <sequential-entrance-animation>
    <div class="box" v-for="app in apps" :key="app">{{ app }}</div>
  </sequential-entrance-animation>
</template>

3.Vue.use("template");
<template>
  <sequential-entrance>
    <div class="box" v-for="app in apps" :key="app">{{ app }}</div>
  </sequential-entrance>
</template>

4.Vue.use(SequentialEntrance);
<template>
  <sequential-entrance>
    <div class=""box"" v-for=""app in apps"" :key=""app"">{{ app }}</div>
  </sequential-entrance>
</template>"

You have a v-dialog component in vuetify that needs to be converted to a full-screen dialog on smartphones without binding watchers or checking for page load.

Which of the following would help you achieve this?

Options

1. Breakpoints
2. Sandbox
3. Transitions
4. Grid lists

Which of the following tasks would need to be performed if the Classic Load Balancer monitoring requires you to enable access logs?

1.Create an S3 Bucket

2.Attach a Policy to Your S3 Bucket

3. Verify that the Load Balancer Created a Test File in the S3 Bucket

Options

1. Only 1,2
2. Only 2,3
3. Only 1,3
4. All of these

As a security administrator, you want to ensure that right login security principles are applied to all the users for their AWS account.

Which of the following should be a part of right security measures to be put in place?

Options

1. Delete any access keys which are present for the root account.
2. Ensure that the root account is used for privileged account activities
3. Have a rotation policy in place for changing the root account password.
4. Both choice 1 and 3
5. All of these

You are working with target groups in AWS Network Load Balancer. In the given scenario which of these can be used to preserve client IP address while registering the instances?

1. Instance ID

2. Source IP addresses

Options

1.Only 1

2.Only 2

3.Both 1,2

4.None of these

Which of the given statements regarding the usage of access logs in Elastic load balancing are appropriate?

Options

1. Use logs to to understand the nature of the requests
2. Use logs to maintain a complete accounting of requests
3. Use logs to perform a detailed health check
4. None of these

Which of these are valid types of Health checks that can be created on Route 53?

1. Health checks that monitor an endpoint

2. Health checks that monitor other health checks

3.Health checks that monitor CloudWatch alarms

Options

1. Only 1,2
2. Only 2,3
3. Only 1,3
4. All 1,2,3

You are asked to develop a feature for an application hosted on AWS. The feature must display the number of times the website has been visited or clicked. You have decided to invoke a lambda function to the show the required statistics.

In the given context, what is the most cost efficient and straightforward way to show the statistics at 8:00 AM GMT?

Options

1.Create an AWS CloudWatch Events rule that is scheduled using a cron expression as “0 08 ** ?*”. Configure the target as the Lambda function.

2.Create an Amazon Linux EC2 T2 instance and set up a Cron job using Crontab. Use AWS CLI to call your AWS Lambda every 8:00 AM.

3.In AWSCloudWatch Events console, click “Create Event” using the cron expression “*?* * 08 00”. Configure the target as the Lambda function

4.Use Amazon Batch to set up a job with a job definition that runs every 8:00 AM for the Lambda function.

You are using Amazon S3 to store artifacts while running MOF files to create associations in AWS systems manager to manage state. In the given context which of these should be granted permissions to the S3 Bucket?

1. GetObject

2. ListBucket

Options

1. Only 1
2. Only 2
3. Both 1,2
4. None of these

You are tasked to define security policies between a client and the Elastic Load Balancer.

What component will not be a part of security policy required for the negotiation between the client and the load balancer?

Options

1. Client Order Preference
2. SSL Ciphers
3. Server Order Preference
4. SSL Protocols

You are using target groups to configure a Network Load balancer.

In the given context which of these protocols will force you to select an instance when used by the target group?

1. UDP

2. TCP_UDP

Options

1. Only 1
2. Only 2
3. Both 1,2
4. None of these

You are asked to test the performance of a web application to negate the risk of application failure. Which of these factors would you assess while doing so?

1. System scalability

2. Spike user loads

3. Throughput level

Options

1. Only 1,2
2. Only 2,3
3. Only 1,3
4. All 1,2,3

You are conducting the usability review for a product. It is given that the scope of this review will depend on the following two things:

1. Complexity of the product

2. What you want to test

In the scope of this review, what will you do to test multiple scenarios by saving duplication of effort?

Options

You are conducting the usability review for a product. It is given that the scope of this review will depend on the following two things:

1. Complexity of the product

2. What you want to test

In the scope of this review, what will you do to test multiple scenarios by saving duplication of effort?

Options

1. Keep the number of personas to a minimum and recycle them wherever possible
2. Keep the number of personas to a minimum but do not recycle them
3. Keep the number of personas to a maximum but do not recycle them
4. Keep the number of personas to a maximum and recycle them wherever possible

You are asked to performance test a website in order to prevent memory leaks or problems with hardware and servers.

Which of these types of performance testing are you likely to perform in this context?

Options

1. Spike test
2. Stress test
3. Load test
4. Soak testing

You want to perform load testing on your software and to do so you use a strategy that does not produce repeatable results. You also notice this strategy cannot provide measurable levels of stress on the application.

Which of these Load Testing strategies is being referred to in the given context?

Options

1. In house developed load testing tools
2. Open source load testing tools
3. Enterprise-class load testing tools
4. Manual Load Testing

Assume that you are testing a web application and you find that there is lack of accelerators (like keyboard shortcuts etc.).

What do you think is mostly affected by this?

Options

1. Utility
2. Efficiency
3. Learnability
4. Attitude (or likeability)

Assume that you have a common user task in the form of a scenario. You want to evaluate the usability of an application by testing how well the application supports this specific scenario.

Which of these will provide a proper means for this evaluation?

Options

1. Cognitive walkthrough
2. Heuristic based review
3. Performance reviews
4. No-web review

When conducting usability testing of a web application, you find that observers begin to jump to conclusions after seeing only one or two participants. Some of them even begin to discuss design changes at that point itself. In contrast, you also notice patterns, but try to keep an open mind and avoid forming conclusions between sessions.

What should you do in the current scenario to help observers avoid directly jumping to conclusions?

Options

1. Encourage observers to avoid making design decisions until you have analysed all of the data
2. Emphasize the importance of keeping an open mind and avoiding premature conclusions before the test sessions
3. Include the numbers of participants who made errors, took actions, and made comments in the deliverable that documents your findings
4. All of the above

You are asked to find a website's possibility to sustain sudden user loads.

Which of these types of performance tests are you likely to perform in order to determine this?

Options

1. Spike test
2. Stress test
3. Load test
4. Soak testing

While analyzing the security of a web application, you find that it allows an externally-supplied input to serve as an argument for a program that is under its own control.

What would be the likelihood of exploit attributed to this vulnerability?

Options

1. Low
2. Medium
3. High
4. It cannot be determined

You have developed a website accessible to both disabled and non-disabled users. Which of the following assistive technologies is your website supposed to work well with with respect to the disabled users?

1. Notepad

2. Screen Readers

3. Camera

4. Screen Magnifiers

5. Voice Recognition Software

Options

1. 1,2,3 & 4
2. 2 & 5
3. Only 1 & 2
4. 2,4 & 5
5. 3,4 & 5

You have created a web form which has a textbox to input some value. While testing this form in Selenium, you want to automatically fill the textbox with a value XBOX.

Which of the following lines of code will you use if the name of textbox is first and the id is one?

Options

1.WebElement input1 = driver.findElement(By.name("first"));
input1.sendKeys("XBOX");
2.WebElement input1 = driver.findElement(name == "first"));
input1.value("XBOX");

3.WebElement input1 = driver.findElement(UsingId("one"));
input1.value("XBOX");

4.WebElement input1 = driver.findElement(Id=="one"));
input1.sendValue("XBOX");

Assume, you have hosted a web application on a local server and a remote server. You realize that due to network latency the time to load a web page on the remote server will be higher. Now, if you want to execute your test cases against each of them, you may have to configure the wait time accordingly.

Which of the given code snippets can be used to solve the issue?

Options

1.driver.manage().Wait(10, TimeUnit.SECONDS);
2.driver.manage().timeouts().Wait(10, TimeUnit.SECONDS);

3.driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

4.driver.manage().implicitlyWait(10, TimeUnit.SECONDS);

While testing a web page in Selenium, you want to move the mouse 5 units to the right from the current position and carry out a double click action.

Which of the these are valid options to be used for this purpose?

Options

1. Create a single Action object with moveByOffset() and doubleClick() methods joined in sequence. Execute this action using the perform() method.
2. Create two Action objects using moveByOffset() and doubleClick() methods separately. Pass these actions as parameters to execute() method for execution.
3. Create a single Action object with moveAlongX() and doubleClick() methods joined in sequence. Execute this action using the perform() method.
4. Create two Action objects using moveAlongX() and doubleClick() methods separately. Pass these actions as parameters to execute() method for execution.

Assume that the current surname smith inside the surname textbox has to be replaced by legend. The browser is highly secured and only keystores work in a proper way(all other binding gives an inconsistent result).

Which of the following Selenium methods can be used to achieve it?

Options

1. PutKeyStroke
2. SendKeys
3. PutKeys
4. SendKeyStrokes

Select the correct option regarding a keyboard event in Selenium.

A) After performing the keyDown(Keys.SHIFT) event, the first letter key pressed will be appear in Capital while the rest all will appear in small case.

B) keyDown() event automatically releases the key after the first input.

Options

1. Statement A is true, Statement B is true, Statement B is the correct explanation of Statement A.
2. Statement A is true, Statement B is true, Statement B is not the correct explanation of Statement A.
3. Statement A is true, Statement B is false.
4. Statement A is false, Statement B is true.
5. Statement A is false, Statement B is false.

You have two check boxes in a list on a webpage with Ids cb1 and cb2, respectively.

What would be the output of the following code?

WebElement box1 = driver.findElement(By.id("cb1")):
WebElement box2 = driver.findElement(By.id("cb2"));
box1.click();
box2.click();
System.out.println(box1.isSelected());
System.out.println(box2.isSelected());

Options

1.true

false

2.false

true

3.true

true

4.false

false

5.Syntax erro

You want to define an expected condition check to determine a string valued expectation from javascript for a java client binding in selenium.

Which of these conditional methods will you likely utilize in the given scenario?

Options

1.jsReturnsValue(java.lang.String javaScript)
2.StringreturnsJS(Java.util.Javascript)

3.jsSwitchesToValue(Java.util.Javascript.String)

4.JSConvertsToValue(java.util.String)

You want to be able to lookup parent element from child elements. In the given scenario, which of the following can be used to locate web elements?

1. XPath

2. CSS selector

Options

1. Only 1
2. Only 2
3. Both 1,2
4. None of these

You have to switch between frames using the following method :

driver.switchTo().frame()

Which of the following are the possible arguments that can be used to do the same?

A. Frame Index

B. Frame ID

C. Previous WebElement

Options

1. A,B
2. A,C
3. B,C
4. A,B,C

Which of these characters are going to be used to perform a partial string match in a CSS selector in selenium to locate elements that start with a_?

Options

1. ^
2. &
3. $
4. *

Read the two statements regarding entity framework views given below and choose the correct choice.

1) Entity framework view is similar to a real table because it contains columns and rows of data

2) Entity framework view can be used to centralise data distributed across several servers

Options

1. Statement 1 is true and statement 2 is false
2. Statement 1 is false and statement 2 is true
3. Both statements are true
4. Both statements are false

You are iterating over a collection when working with C# in .Net.

In the given context, which of these is a valid syntax for the finally clause when there is no implicit conversion from the type of enumerator to IDisposable?

Options

1.finally 
{ 
 (enumerator as IDisposable)?.Dispose(); 
}
2.finally 
{ 
}
3.finally
{
 ((IDisposable)enumerator).Dispose();
}

4.None of these

Which of these lines of codes in the code snippet given below will throw a compilation error?

public class Sample
{
 public static void Main()
 {
 //L1
 int num = 4;
 int A = Square(num);

 //L2
 int B = Square(12);

 //L3
 int C = Square(A * 3);
 }

 static int Square(int i)
 {
 int input = i;
 return input * input;
 }
}

Options

1. Only L1
2. Only L2
3. Only L3
4. All L1, L2 and L3

What type of boxing is being implementing in the code snippet given below?

int a = 100;
object obj = (object)a;

Options

1. Implicit boxing
2. Explicit boxing
3. Test boxing
4. Declarative boxing

You are using ASP.NET Core MVC.

In the given context, which of the the following is TRUE?

1. The view component and the controller component depends on the model component.

2. The model component depends on the view component and the controller component.

3. The model component neither depends on the view component nor the controller component.

Options

1.Only 1

2.Only 2

3.Both 1 and 3

4.Both 1 and 2

You want to communicate over the Internet when creating peer-to-peer applications.

Which of these NameClasses from the .NET Framework Class Library would you use to do so?

Options

1. System.Data
2. System.Net
3. System.Web
4. System.Peer

Predict the output of the following code snippet.

string sentence = "Good    Morning World";
string[] words = sentence.Split(' ');

foreach (var word in words)
{
    System.Console.WriteLine($"<{word}>");
}

Options

1.<Good>

<>

<>

<>

<Morning>

<World>

2.

<Good>

<Morning>

<World>

3.

<Good>

<>

<Morning>

<World>

4.None of these

You created the given option class while doing configuration in MVC .NET.

public class PositionOptions 
{ 
 public const string Position = "Position"; 
 
 public string Title { get; set; } 
 public string Name { get; set; } 
}

In this context, which of these statements is TRUE?

Options

1. While making this option class you ensured that all public read-write properties of the type are unbound.
2. While making this option class you ensured that the class is abstract with a private parameterless constructor.
3. While making this option class you ensured that the class is non-abstract with a public parameterless constructor.
4. None of these

Which of the following statements regarding entity framework features are TRUE?

1) Entity Framework performs automatic transaction management while querying or saving data.

2) Entity Framework does not allow you to configure the EF model by using data annotation attributes

3) Entity Framework does not allow you to configure the EF model by using Fluent API to override default conventions

Options

1. 1
2. 1,2
3. 1,3
4. 1,2,3

Which of the following operations will you use if you want that 35 ms per request to get freed up to handle other requests?

Options

1. Non-blocking asynchronous operations
2. Blocking asynchronous operations
3. Non-blocking synchronous operations
4. Blocking synchronous operations

You are writing a program which intends to increment the "hitCount" property of the "Analytics" object every time the http server gets a request.

Which of the following code segment(s) will work as intended?

Options

1. var Analytics = { hitCount: 10, gotHit: function() { this.hitCount++; } } var http = require('http'); var server = http.createServer(function(req, res) { // process the request }); server.on('connection', Analytics.gotHit.bind(Analytics)); server.listen(80, '0.0.0.0');
2. var Analytics = { hitCount: 10, gotHit: function() { this.hitCount++; } } var http = require('http'); var server = http.createServer(function(req, res) { Analytics.gotHit(); // process the request }); server.listen(80, '0.0.0.0');
3. var Analytics = { hitCount: 10, gotHit: function() { this.hitCount++; } } var http = require('http'); var server = http.createServer(function(req, res) { // process the request }); server.on('connection', Analytics.gotHit); server.listen(80, '0.0.0.0');
4. Both 1,2
5. Both 1,3

In Node.js you are using the .pipe() function to transfer data from one process to another. The write queue is currently busy and so .write() returns a false value.

Which of the following event will be emitted once the data buffer is emptied to resume the incoming data flow in this situation?

Options

1. drain()
2. .read()
3. .transform()
4. .duplex()

Which of these code snippets can you use to do this?

Options

1.app.use(express.static('thisd'))
app.use(express.static('thatd'))
2.app.use(express.static('thisd',"thatd"))
3.app.use('static', express.static('thisd'))
app.use('static', express.static('thatd'))
4.app.use('static', express.static('thisd',"thatd"))

app.use(function(req, res, next){ 
 res.locals.user = req.user; 
 res.locals.authenticated = ! req.user.anonymous; 
 next(); 
});

Options

1. request path name
2. authenticated user
3. user settings
4. download path name

You are using the express-session middleware for cookie session maintenance.

What consideration would you need to take in case you want to use this for a production environment?

Options

1. You should never use it in a production environment
2. You should use an in-memory store in the production environment
3. You should set up a session store for the production environment
4. No changes are necessary

Which of these characters are not allowed in key when storing data in key:value form?

Options

1. \0
2. . (dot character)
3. $
4. Only choice 1 and 2
5. All of them ( Choice1,2 and 3)

Which of these queries can be used If you want to find all MongoDB users who do not have the username “John”?

Options

1.db.users.find({"username" : {"$ne" : "John"}})
2.db.users.find({"username" : {"$not" : "John"}})

3.db.users.find({"username" : {"$else" : "John"}})

4.db.users.find({"username" : {"$except" : "John"}})

You are using the following angular code to pass data from parent to child with input binding.

import { Component, Input } from '@angular/core';

import { Hero } from './hero';

@Component({
 selector: 'app-hero-child',
 template: `
 
{{hero.name}} says:

I, {{hero.name}}, am at your service, {{masterName}}.

 `
})
export class HeroChildComponent {
 @Input() hero: Hero;
 XXX
}

What can be used in place of XXX to alias the child component property name masterName as 'master'?

Options

1.@Input('master') masterName;
2.@Input('master') masterName: string;
3.@Input(master) 'masterName';
4,@Input(master:string) 'masterName';

You are using the :host pseudo-class selector to target styles in the element that hosts the component in Angular.

What can you achieve by using function form when doing so?

Options

1. You can apply host styles conditionally
2. You can include another selector inside the host
3. You can target the host element
4. You can host element inside parent's component

Which of these top commands provides a comprehensive list of all available variations when checking memory usage in a linux machine?

Options

1. man top
2. htop
3. bottom top
4. snap top

Which of these commands should you use to create a user named 'sampleuser' with a home directory and the ability to log in to the system?

Note: You are working on a CentOS 8 system.

Options

1.sudo useradd -m sampleuser
2.useradd -m sampleuser

3.useradd -u sampleuser

4.sudo useradd -l sampleuser

Which of these commands can you use to find out which application or process is reading/writing the most in your linux system?

Options

1. iotop
2. iotop -o
3. top
4. iostat

Given that $$ in the below given bash script represents the process ID of the current script.

echo $$ - (i)
echo $(echo $$) - (ii)

What can be said about the output produced by (i) and (ii)?

Options

1. Output of (i) and (ii) are same.
2. (i) throws an error while output of (ii) is an integer.
3. (ii) throws an error while output of (i) is Integer.
4. Both (i) and (ii) throw an error

Which of these commands can you use to monitor a log file named 'file.txt' in your Ubuntu 18.04 system?

Note: Assume that you are remotely connected to a server and don’t have a GUI.

Options

1. tail -f file.txt
2. head -f file.txt
3. tail -n file.txt
4. head -n file.txt

You are using the command given below to view the details of a specific partition. What can be used in place of XXX to complete the command?

fdisk XXX

Options

1. -I
2. -l 'name of device'
3. -r
4. -r 'name of device'

Which of these commands can be used to prompt a confirmation from a Linux CentOS 8 user before deleting the user’s crontab?

Options

1.crontab -i -r
2.crontab -i

3.crontab -r

4.crontab -f

You are using the dtstat command to get the stats of the disk activity on your linux system.

Which of the following options will you use to get a continuous list of disk read/write measurements?

Options

1. -d
2. -i
3. -w
4. -r

What should you do to make your mount settings permanent when mounting a filesystem on your CentOS 8 system?

Options

1. You need to locate and list block devices on your system
2. You need to amend the fstab file in order to make your mount settings permanent.
3. You need to locate and list block devices on your system
4. None of these

You want to detect the need for client side throttling while working with the Azure key vault.

In the given context which of these HTTP responses can be used for doing so?

Options

1. error code 429
2. error code 450
3. error code 350
4. error code 303

You are working with big data in Data Lake Storage Gen2. When doing so, you have decided to use Azure Active Directory security groups instead of assigning individual users to directories and files.

What is the benefit of doing so?

Options

1. Adding or removing users from the group doesn’t require any updates to Data Lake Storage Gen2
2. It ensures that you don't exceed the maximum number of access control entries per access control list
3. It enables you to access data in a storage account with hierarchical namespace enabled.
4. Both 1 and 2
5. All 1, 2 and 3

You are running the Switch-SqlAvailabilityGroup cmdlet to convert a secondary replica to a primary server in Azure analysis services while forcing a failover. However, you do not want to be prompted for confirmation during the operation.

In the given context, which of these parameters would you need to specify?

Options

1. Force
2. Script
3. Confirm
4. Either Choice 1 or Choice 2
5. Either Choice 1 or Choice 3

Which of these are valid ways to use POSIX access controls for Azure Active Directory users offered by Azure Data Lake Storage Gen2?

Options

1. Setting the access controls to existing files and directories
2. Create default permissions that can be automatically applied to new files
3. Both 1 and 2
4. Neither 1 nor 2

You are asked to throttle your requests in response to service limits while working with Azure Key Vault. In the given context, which of these are valid best practices that should be followed while doing so?

1. Reduce the number of operations per request.
2. Reduce the frequency of requests
3. Avoid immediate retries.

Options

1. Only 1,2
2. Only 2,3
3. Only 1,3
4. All 1,2,3

You are working with a Resource group in Azure. In the given context, which of these are valid best practices that need to be followed while doing so?

1. Provide a description of every parameter in the metadata

2. Use a literal value or a language expression to specify defaults for optional parameters

3. Use allowedValues sparingly.

Options

1. Only 1,2
2. Only 2,3
3. Only 3
4. Only 1
5. All 1,2,3

You need to deploy Azure resources to multiple resource groups.

In the given scenario, how many resource groups can be deployed in a single deployment if the parent template used contains only nested templates?

Options

1. less than 500
2. less than 400
3. more than 800
4. upto 800

A guest users from a different Azure directory tenant is assigned the Synapse Administrator role.

Which of these deductions can be made in the given context?

Options

1. Guest users cannot see or manage role assignments
2. Guest users can see or manage role assignments
3. Guest users can list Synapse RBAC role assignments for all scopes
4. Guest users can include assignments for objects they don't have access to

Assume that you have backed up a key from one geographical location. Which of these conditions need to be satisfied if you want to restore the key to a key vault in another Azure location?

1. Both of the Azure locations belong to the same geographical location

2. Both of the key vaults belong to the same Azure subscription

3. RBAC has not been configured for Both the key vaults

Options

1. Only 1,2
2. Only 2,3
3. Only 1,3
4. All 1,2,3

Which of these is a single point that can be used to delete Data Encryption Key for the entire data in Azure encryption at rest?

Options

1. Key Encryption Key
2. Key Chain
3. Certificate Chain
4. SSL chain

Why should you provide a defaultValue when reading the darkMode entry from the box in a Flutter application?

Options

1. Because the value will be null when the application starts for the first time.
2. Because value of themeMode is set based on the value of darkMode
3. Both Choice 1 and 2
4. Neither Choice 1 nor 2

Bob wants to develop a Flutter application with navigation to the same screen enabled in many parts of the application.

What can he do to avoid code duplication in the given scenario?

Options

1. Use named routes for navigation
2. Use dynamic navigation with generated routes
3. Use static navigation with route map
4. Navigate to a new screen and back by creating a new route

In which of the following situations will a layout widget have a child property?

1. If it takes a Container widget.

2. If it takes a Row widget.

3. If it takes a Stack widget.

Options

1. Only 1
2. Only 2
3. Only 3
4. All 1, 2 and 3

Bob is creating a Food delivery app on Flutter. He wants to include 5 star icons that lets users rate the food delivery service.

Which property will allow him to pack the star icons closely together?

Options

1. mainAxisSize
2. MainAxisSize.min
3. MainAxisSize.max
4. iconList

Alice is building a food app on Flutter. She wants to integrate a column-like layout that automatically scrolls if the content is too long to fit the available space.

Which of the given widgets will help her achieve the same?

Options

1. ListView
2. ListTitle
3. Row
4. Column

You are building an application with lots of animations. You want the animations to start playing when a tap is detected anywhere on the screen.

Which of these Flutter widgets will help you in doing so?

Options

1. StaggerDemo
2. StaggerAnimation
3. CurvedAnimation
4. MoveAnimation

What happens when Provider.of fails to find a Provider as an ancestor of the BuildContext used when working with the Flutter provider package?

Options

1. The error ProviderNotFoundException is thrown
2. The error Provider.of failed is throw
3. The exception noSuchMethod is thrown
4. None of these

You are building an application in Flutter. In which of the given situations, are you likely to call a removeListener manually while doing so?

1. When you're listening to an Action widget in a widget hierarchy

2. When you're using an Action outside of a widget context

Options

1. Only 1
2. Only 2
3. Both 1,2
4. None of these

You have created an app in Flutter that contains several pages. Now, you want the app to stay in sync with the browser's URLS if the page URLs are updated.

Which of the given Router widgets will help you in the above scenario?

1. RouteInformationParser

2. RouterDelegate

Options

1. Only 1
2. Only 2
3. Both 1, 2
4. None of these

You notice that whenever a Ticker is started it returns a Future.

When will this Future be stopped in this context?

Options

1. When the Ticker is stopped
2. When the Ticker elapses
3. When all the Tickers are synchronised
4. None of these

You are planning to use the popover plugin in bootstrap 4 for designing a page. In the given context, select the valid guidance to be followed while doing so?

1. All popovers used would need to be assigned explicitly

2. Popovers for .disabled elements should be triggered on a wrapper element.

Options

1. Only 1
2. Only 2
3. Both 1,2
4. None of these