Development - Node Js Test

Test Instructions :

1. The Test is 1hr duration.
2. The Test Paper consists of 30 questions. The maximum marks are 30.
3. All the questions are multiple choice question type with three options for each question.
4. Out of the three options given for each question, only one option is the correct answer.
5. Each question is allotted 1 mark for each correct response.
6. 0.25 will be deducted for incorrect response of each question.
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Which of the following is true about Chaining streams ?

  

  

  

  

Which of the following module is required to create a child process?

  

  

  

  

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

  

  

  

  

Node.js' package ecosystem, npm, is the largest ecosystem of open source libraries in the world. ?

  

  

A stream fires error event when there is any error receiving or writing data.

  

  

Which of the following code converts a buffer buf to JSON object?

  

  

  

  

Is the below code valid?

var cb0 = function (req, res, next) {
  console.log('CB0')
  next()
}

var cb1 = function (req, res, next) {
  console.log('CB1')
  next()
}

var cb2 = function (req, res) {
  res.send('Hello from C!')
}

app.get('/example/c', [cb0, cb1, cb2])

 

  

  

Is process a global object?

  

  

The $ npm ls -g statement is used to list down all the locally installed module?

  

  

How to store local variables that can be access within the application?

  

  

  

  

Is Node.js free to use?

  

  

Which of the following code prints current directory?

  

  

  

  

To install Node.js express module

  

  

  

  

In Nodejs how node based web servers differ from traditional web servers ?

  

  

  

  

Which of the following is true about fork methd of child_process module. ?

  

  

  

  

Which method of fs module is used to delete a file?

  

  

  

  

Is console a global object?

  

  

In Nodejs what is use of underscore variable in REPL session?

  

  

  

  

Node.js runs on __________

  

  

  

  

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

  

  

  

  

Node.js supports which of the following platform?

  

  

  

  

Which of the following code gets length of a buffer buf?

  

  

  

  

A stream fires finish event when all data has been flushed to underlying system.?

  

  

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

  

  

  

  

Which of following command starts a REPL session?

  

  

  

  

Which of the following statement is valid to use a Node module http in a Node based application?

  

  

  

  

Which method of fs module is used to close a file?

  

  

  

  

Is the code below valid?

var cb0 = function (req, res, next) {
  console.log('CB0')
  next()
}

var cb1 = function (req, res, next) {
  console.log('CB1')
  next()
}

app.get('/example/d', [cb0, cb1], function (req, res, next) {
  console.log('the response will be sent by the next function ...')
  next()
}, function (req, res) {
  res.send('Hello from D!')
})

 

  

  

Which of the following statement is valid to use a Node module fs in a Node based application?

  

  

  

  

Which of the following command will show version of npm?

  

  

  

  

REPL stands for.

  

  

  

  

All APIs of Node.JS are

  

  

  

  

What are the key features of Node.js ?

  

  

  

  

What npm stands for?

  

  

  

  

How can we create instance of http module ?

  

  

  

  

Which of the following is true with respect to Node.

  

  

  

  

Node.js is ________ by default.

  

  

  

  

Route paths, in combination with a request method, define the endpoints at which requests can be made.Which of following are valid form of route path?

  

  

  

  

How many number of callback functions can be attached to handle a request?

  

  

Which of the following code print the name of operating system?

  

  

  

  

Which of the following is true about fs module of Node?

  

  

  

  

Where is captured values are populated regarding route parameters?

  

  

  

  

How can we check the cujrrent version of NPM?

  

  

  

  

Node js is a single threaded application but supports concurrency.

  

  

Which of the following is true about internal binding with respect to domain module?

  

  

  

  

Node.js uses an event-driven, non-blocking I/O model ?

  

  

Which of the following is true about readable stream?

  

  

  

  

net.isIP(input) returns 4 for IP version 4 addresses.

  

  

In ExpressJS, the method app.all(path, callback [, callback ...]) can accept all HTTP methods

  

  

package.json is is used to define the properties of a package?

  

  

Which of the following is the correct way to get a normalized path?

  

  

  

  

What is Node.JS?

  

  

  

  

The $ npm ls statement is used to list down all the locally installed module?

  

  

How can we create chainable route handlers for a route path in ExpressJS app?

  

  

  

Transform stream is a type of duplex stream.

  

  

Which of the following code prints process version?

  

  

  

  

Which of the following is true about EventEmitter.on property?

  

  

  

  

Which of the following is true about package.json?

  

  

  

  

Which of the following module is required for exception handling in Node?

  

  

  

  

Which statement execute the code of sample.js file?

  

  

  

  

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

  

  

  

  

In Node.js from the following which is true about writable stream

  

  

  

  

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