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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To install Node.js express module

  

  

  

  

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

  

  

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 is true about Chaining streams ?

  

  

  

  

Node.js is ________ by default.

  

  

  

  

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

  

  

  

  

Which of the following is true about readable stream?

  

  

  

  

Transform stream is a type of duplex stream.

  

  

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

  

  

  

  

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

  

  

  

  

Is console a global object?

  

  

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

  

  

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

  

  

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

  

  

  

  

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

  

  

  

  

Which of the following code prints current directory?

  

  

  

  

How can we create instance of http module ?

  

  

  

  

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

  

  

  

  

Where is captured values are populated regarding route parameters?

  

  

  

  

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

  

  

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

  

  

  

  

Node.js supports which of the following platform?

  

  

  

  

REPL stands for.

  

  

  

  

What are the key features of Node.js ?

  

  

  

  

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

  

  

  

  

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

  

  

What npm stands for?

  

  

  

  

Which of the following command will show version of npm?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

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

  

  

  

  

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

  

  

  

  

Which statement execute the code of sample.js file?

  

  

  

  

Is Node.js free to use?

  

  

Which of following command starts a REPL session?

  

  

  

  

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

  

  

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

  

  

  

  

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

  

  

  

  

All APIs of Node.JS are

  

  

  

  

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

  

  

  

  

How can we check the cujrrent version of NPM?

  

  

  

  

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

  

  

  

  

Node js is a single threaded application but supports concurrency.

  

  

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

  

  

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

  

  

  

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

  

  

  

  

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

  

  

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?

  

  

  

  

Which of the following code prints process version?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

What is Node.JS?

  

  

  

  

Is process a global object?

  

  

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

  

  

  

  

Which of the following is true with respect to Node.

  

  

  

  

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])

 

  

  

Which of the following is true about package.json?

  

  

  

  

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

  

  

  

  

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

  

  

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

  

  

  

  

Node.js runs on __________

  

  

  

  

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