Node.js Test 1

Question 1

When there is no more data to read, the stream sends an end event.

Accepted Answer

True

Answer

False

Question 2

Which of the following statements concerning the global object __dirname is correct?

Accepted Answer

The _dirname represents the name of the directory that the currently executing script rides in.

Answer

The _dirname represents the resolved absolute path of code file

Answer

none of these

Question 3

Which of the following lines of code prints the amount of memory used?

Accepted Answer

console.log('Current version: ' + process.memory());

Answer

console.log('Current version: ' + process.getMemory());

Answer

console.log('Current version: ' + process.getMemory());

Answer

none of these

Question 4

Which of the following statements regarding Node.JS is correct?

Accepted Answer

All of these

Answer

Node.js is used to develop I/O intensive web application like video streaming sites, single page applications and other web application

Answer

Node.js is open source and is completely free to use

Answer

Node.js is a JavaScript based framework/platform built on Google Chrome's JavaScript V8 Engine

Question 5

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

Accepted Answer

Both of the above

Answer

The setTimeout(cb, ms) functions returns to opaque value that represents the timer which can be clear the timer

Answer

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

Answer

None of these

Question 6

Which of the following statements concerning the child process module's spawn method is correct?

Accepted Answer

Both of the above

Answer

The spawn() metod returns streams (stdout, stderr)

Answer

The spawn() method launches a new process with a given command

Answer

None of these

Question 7

Which of the following statements regarding the EventEmitter.on property is correct?

Accepted Answer

on property is used to bind a function with the event

Answer

on property is used to locate an event handler

Answer

on property is used to fire event

Answer

none of these

Question 8

Which of the following statements regarding Chaining Streams is correct?

Accepted Answer

Both of the above

Answer

Chanining is normally used with piping operations

Answer

Chanining is a mechanism to connect output of one stream to another stream and create chain of multiple stream operations

Answer

None of these

Question 9

Which of the following statements concerning external binding in terms of domain modules is correct?

Accepted Answer

Error Emmitter is added explicitly to domain using its add method

Answer

Error emmitter is executing its code with run method to domain

Answer

Both of the above

Answer

None of these