Node.js Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Node.js Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - What is Node.JS?

A - Node.js is a web server.

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

C - Node.js is a java based framework.

D - None of the above.

Answer : B

Explanation

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

Q 2 - Which of the following command will show all the modules installed locally.

Answer : B

Explanation

Executing $ npm ls command will show all the modules installed locally.

Q 3 - Node js is a single threaded application but supports concurrency.

A - true

B - false

Answer : A

Explanation

True! Node js is a single threaded application but it support concurrency via concept of event and callbacks.

Q 4 - Which of the following is true about Chaining streams?

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

B - Chanining is normally used with piping operations.

C - Both of the above.

D - None of the above.

Answer : C

Explanation

Chanining is a mechanism to connect output of one stream to another stream and create a chain of multiple stream operations. It is normally used with piping operations.

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.

Answer : C

Explanation

The __filename represents the filename of the code being execute

D - This is the resolved absolute path of this code file.

Q 6 - Which of the following code print the name of operating system?

A - console.log('type : ' + os.type);

B - console.log('type : ' + os.type());

C - console.log('type : ' + os.getType());

D - None of the above.

Answer : B

Explanation

os.type() returns the operating system name.

Q 7 - Which of the following is the correct way to get a normalized path?

A - path.normalize('/test/test1//2slashes/1slash/tab/..')

B - fs.normalize('/test/test1//2slashes/1slash/tab/..')

C - os.normalize('/test/test1//2slashes/1slash/tab/..')

D - None of the above.

Answer : A

Explanation

path.normalize(p) normalizes a string path, taking care of '..' and '.' parts.

Q 8 - Which of the following API creates a client?

A - net.createServer([options][, connectionListener])

B - net.connect(options[, connectionListener])

C - net.createConnection(port[, host][, connectListener])

D - None of the above.

Answer : A

Explanation

net.connect(options[, connectionListener]) is a factory method, which returns a new 'net.Socket' and connects to the supplied address and port and can be used to create a client.

Q 9 - Which of the following is true about external binding with respect to domain module?

A - Error emmitter is executing its code within run method of a domain.

B - Error emmitter is added explicitly to a domain using its add method.

C - Both of the above.

D - None of the above.

Answer : B

Explanation

Error emmitter is added explicitly to a domain using its add method in case of external binding.

Q 10 - Which of the following is true about RESTful webservices?

A - Webservices based on REST Architecture are known as RESTful web services.

B - Webservices uses HTTP methods to implement the concept of REST architecture.

C - Both of the above.

D - None of the above.

Answer : C

Explanation

Webservices based on REST Architecture are known as RESTful web services. These webservices uses HTTP methods to implement the concept of REST architecture.

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