Node.js Online Quiz

Answer : D

Explanation

Node.js is a very powerful JavaScript based framework/platform built on Google Chrome's JavaScript V8 Engine. It is used to delevop I/O intensive web applications like video streaming sites, single page applications and other web application. Node.js is open source, completely free, and used by thousands of developers around the world.

Q 2 - Which of the following command will show version of Node?

A - $ npm --version

B - $ node --version

C - $ npm getVersion

D - $ node getVersion

Answer : B

Explanation

Executing $ node --version command will show the version of Node instance.

Q 3 - Which of the following is true about EventEmitter.emit property?

A - emit property is used to locate an event handler.

B - emit property is used to bind a function with the event.

C - emit property is used to fire an event.

D - None of the above.

Answer : C

Explanation

emit property is used to fire an event.

Q 4 - Which of the following is true about fs module of Node?

A - Every method in fs module have synchronous as well as asynchronous form.

B - Asynchronous methods of fs module take last parameter as completion function callback and first parameter of the callback function as error.

C - Both of the above.

D - None of the above.

Answer : C

Explanation

Every method in fs module have synchronous as well as asynchronous form. Asynchronous methods of fs module take last parameter as completion function callback and first parameter of the callback function as error.

Q 5 - Which of the following is true about __filename global object?

A - The __filename represents the filename of the code being executed.

B - The __filename represents the resolved absolute path of code file.

C - Both of the above.

D - None of the above.