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 1In which of the following areas, Node.js is not advised to be used?

A - Single Page Applications

B - JSON APIs based Applications

C - CPU intensive applications

D - Data Intensive Realtime Applications (DIRT)

Answer : C

Explanation

It is not advisable to use Node.js for CPU intensive applications.

Q 2 - By default, npm installs any dependency in the global mode.

A - true

B - false

Answer : B

Explanation

By default, npm installs any dependency in the local mode.

Q 3 - Buffer class is a global class and can be accessed in application without importing buffer module.

A - true

B - false

Answer : A

Explanation

Buffer class is a global class and can be accessed in application without importing buffer module.

Q 4 - Which method of fs module is used to read a file?

A - fs.open(path, flags[, mode], callback)

B - fs.openFile(path, flags[, mode], callback)

C - fs.openPath(path, flags[, mode], callback)

D - fs.read(fd, buffer, offset, length, position, callback)

Answer : D

Explanation

fs.read(fd, buffer, offset, length, position, callback) is the method which is used to read a file.

Q 5 - Which method of fs module is used to remove a directory?

A - fs.deleteDirectory(path[, mode], callback)

B - fs.rmdir(path, callback)

C - fs.removeDirectory(path[, mode], callback)

D - None of the above.

Answer : B

Explanation

fs.rmdir(path, callback) is the method which is used to remove a directory.

Q 6 - Which of the following code prints memory usage?

A - console.log(process.memoryUsage());

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

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

D - None of the above.

Answer : A

Explanation

process.memoryUsage() can be used to get the memory usage.

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 module is required for DNS specific operations?

A - dns module

B - web module

C - net module

D - None of the above.

Answer : A

Explanation

Node.js dns module is used to do actual DNS lookup as well as to use underlying operating system name resolution functionalities.

Q 9 - Which of the following is true about exec methd of child_process module.

A - The exec() method runs a command in a shell and buffers the output.

B - The exec() method returns a buffer with a max size.

C - The exec() method waits for the process to end and tries to return all the buffered data at once.

D - All of the above.

Answer : D

Explanation

child_process.exec method runs a command in a shell and buffers the output. It returns a buffer with a max size and waits for the process to end and tries to return all the buffered data at once.

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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