Vridhee : Node Js Test

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Vridhee is a social learning platform for teachers and learners with AI-built multilingual curriculum using curated web-sourced contents to enable #educationforall

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Which of the following statement is correct?

1 point

js is Server Side Language.

js is the Client Side Language.

js is both Server Side and Client Side Language.

None of the above.

Clear selection

What does the REPL stand for?

1 point

REPL stands for "Read Eval Print Loop.

REPL stands for "Research Eval Program Learn."

REPL stands for "Read Earn Point Learn."

REPL stands for "Read Eval Point Loop."

Clear selection

Which of the following method of fs module is used to get file information?

1 point

fs.open(path, flags[, mode], callback)

fs.stat(path, callback)

fs.readFile(path, flags[, mode], callback)

None of the above.

Clear selection

Which of the following method is used to return the current working directory of the process?

1 point

cwd();

pwd();

dwd();

None of the above.

Clear selection

Which of the following statement defines Express?

1 point

Express is an application framework that provides a robust set of features to develop desktop-based applications.

Express is a minimal and flexible Node.js web application framework that provides a robust set of features to develop web and mobile applications.

Both of the above.

None of the above.

Clear selection

Which of the following statement is used to execute the code of the sample.js file?

1 point

sample.js

node sample.js

nodejs sample.js

None of the above.

Clear selection

Which of the following is not a valid language for Node.js?

1 point

JavaScript

Java

C++

Clear selection

Which of the following areas, Node.js, is not advised to be used?

1 point

Single Page Applications

JSON APIs based Applications

CPU intensive applications

Data-Intensive Real-time Applications (DIRT)

Clear selection

Which of the following route parameter formats are valid?

1 point

/books/!:from-:to

/flights/:from-:to

/users/:userId/books/:bookId

None of the above.

Clear selection

Which of the following module is required to create a web server?

1 point

net module

http module

fs module

url module

Clear selection

Which of the following keyword is used to make properties and methods available outside the module file?

1 point

import

module

exports

require

Clear selection

Which of the following method can append specified content to a file?

1 point

fs.appendFile()

fs.open()

fs.writeFile()

None of the above.

Clear selection

Which of the following command will show version of npm?

1 point

$ npm --version

$ node --version

$ npm getVersion

$ node getVersion

Clear selection

Which of the following provides in-built events.

1 point

events

callback

throw

handler

Clear selection

Which of the following is true about setInterval(cb, ms) global function?

1 point

The setInterval(cb, ms) global function is used to run callback cb repeatedly after at least ms milliseconds.

The setInterval(cb, ms) method returns an opaque value that represents the timer which can be used to clear the timer using the function clearInterval(t).

Both of the above.

None of the above.

Clear selection

Which of the following is used to create a new HTTP server in Node.js?

1 point

http.createServer()

http.createServer

http.newServer()

http.newServer

Clear selection

Which of the following is used to write output to the command line in Node.js?

1 point

console.read()

console.write()

process.stdin

console.log()

Clear selection

Which of the following is used to handle file operations in Node.js?

1 point

path

url

querystring

Clear selection

Which of the following is used to manage asynchronous operations in Node.js?

1 point

callbacks

promises

async/await

all of the above

Clear selection

Which of the following is used to handle errors in Node.js?

1 point

try/catch

throw

assert

all of the above

Clear selection

Which of the following is used to generate secure passwords in Node.js?

1 point

bcrypt

md5

sha256

all of the above

Clear selection

Which of the following is used to create and manage web sockets in Node.js?

1 point

socket.io

websockets.js

all of the above

Clear selection

Which of the following is used to interact with MongoDB in Node.js?

1 point

mongoose

sequelize

knex

all of the above

Clear selection

Which of the following is used to interact with MySQL in Node.js?

1 point

mysql

sequelize

knex

all of the above

Clear selection

Which of the following is used to create desktop applications in Node.js?

1 point

Electron

NW.js

app.js

all of the above

Clear selection

Which of the following is the most important consideration while designing the schema for MongoDB?

1 point

The schema should match the data access and query patterns

The schema should be kept in 3NF similar to SQL schemas

The schema should focus on creating possible embedded documents

The schema should contain maximum indexes

Clear selection

As per the aggregation pipeline optimization concepts, if you have a $sort followed by a $match:

1 point

$match moves before $sort

$sort moves before $match

MongoDB does not do any movements by default and will use the order provided

Providing these parameters in any order does not impact the performance

Clear selection

A record in MongoDB is a ___.

1 point

Document

Table

Application

None of the mentioned above

Clear selection

MongoDB stores documents in ___.

1 point

Store

Collections

Indexes

None of the mentioned above

Clear selection

A document is a set of ___.

1 point

Key-value pairs

Application pairs

Activity pair set

None of the mentioned above

Clear selection

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