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Node.js MCQ

1) Which of the following statement is correct?

1. js is Server Side Language.
2. js is the Client Side Language.
3. js is both Server Side and Client Side Language.
4. None of the above.

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2) What does the REPL stand for?

1. REPL stands for “Read Eval Print Loop.”
2. REPL stands for “Research Eval Program Learn.”
3. REPL stands for “Read Earn Point Learn.”
4. REPL stands for “Read Eval Point Loop.”

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3) Which of the following command is used to start a REPL session?

1. $ node
2. $ node start
3. $ node repl
4. $ node console

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4) In which language is Node.js written?

1. JavaScript
2. C
3. C++
4. CoffeeScript
5. All of the above

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5) Which of the following command is used to install the Node.js express module?

1. $ npm install express
2. $ node install express
3. $ install express
4. None of the above

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6) What is Callback?

1. The callback is a technique in which a method calls back the caller method.
2. The callback is an asynchronous equivalent for a function.
3. Both of the above.
4. None of the above.

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7) Which of the following extension is used to save the Node.js files?

1. .js
2. .node
3. .java
4. .txt

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8) The Node.js modules can be exposed using:

1. expose
2. module
3. exports
4. All of the above

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9) Which of the following module is not a built-in node module?

1. zlib
2. https
3. dgram
4. fsread

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10) Which of the following method of fs module is used to get file information?

1. fs.open(path, flags[, mode], callback)
2. fs.stat(path, callback)
3. fs.readFile(path, flags[, mode], callback)
4. None of the above.

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11) What does the fs module stand for?

1. File Service
2. File System
3. File Store
4. File Sharing

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12) Which of the following method of fs module is used to truncate a file?

1. fs.delete(fd, len, callback)
2. fs.remove(fd, len, callback)
3. fs.ftruncate(fd, len, callback)
4. None of the above.

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13) Which of the following template engines can be used with Node.js?

1. Jade
2. Vash
3. Handlebars
4. All of the above

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14) Which of the following code print the platform of operating system?

1. console.log(‘platform : ‘ + os.platform);
2. console.log(‘platform : ‘ + os.platform());
3. console.log(‘platform : ‘ + os.getPlatform());
4. None of the above.

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15) Which of the following method is used to return the current working directory of the process?

1. cwd();
2. cwd();
3. pwd();
4. None of the above.

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16) Which of the following statement defines Express?

1. Express is an application framework that provides a robust set of features to develop desktop-based applications.
2. Express is a minimal and flexible Node.js web application framework that provides a robust set of features to develop web and mobile applications.
3. Both of the above.
4. None of the above.

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17) Which of the following is not a benefit of using modules in Express?

1. It provides a means of dividing up tasks.
2. It provides a means of reuse of program code.
3. It provides a means of reducing the size of the program.
4. It provides a means of testing individual parts of the program.

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18) What is the best practice to do in your code to improve the performance of your application?

1. Using gzip compression.
2. Don’t use synchronous functions.
3. Do logging correctly.
4. Handle exceptions properly.

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19) What is the default scope in the Node.js application?

1. Global
2. Local
3. Global Function
4. Local to object

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20) Which of the following engine Node in core?

1. Chrome V8
2. Microsoft Chakra
3. SpiderMonkey
4. Node En

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21) Which of the following statement is used to execute the code of the sample.js file?

1. sample.js
2. node sample.js
3. nodejs sample.js
4. None of the above.

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22) Which of the following is not a valid language for Node.js?

1. JavaScript
2. Java
3. C
4. C++

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23) Which of the following shortcut command is used to kill a process in Node.js?

1. Ctrl + B
2. Ctrl + K
3. Ctrl + T
4. Ctrl + C

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24) How many Node object methods are available?

1. 21
2. 18
3. 19
4. 20

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25) What is the main usage of Node.js terminal (REPL)?

1. To specify the preview of the Node.js application.
2. For testing Node.js/JavaScript expressions.
3. For executing browser’s JavaScript expressions.
4. None of the above.

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26) Which of the following types of applications can be built using Node.js?

1. Web Application
2. Chat Application
3. RESTful Service
4. All of the above

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27) Which of the following is used to test if two nodes are equal?

1. ==
2. equal()
3. isEqualNode()
4. None of the above.

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28) Which of the following tool is used to automate the various tasks of the Node.js application?

1. Express.js
2. GruntJS
3. NPM
4. None of the above

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29) Which of the following areas, Node.js, is not advised to be used?

1. Single Page Applications
2. JSON APIs based Applications
3. CPU intensive applications
4. Data-Intensive Real-time Applications (DIRT)

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30) Which of the following route parameter formats are valid?

1. /books/!:from-:to
2. /flights/:from-:to
3. /users/:userId/books/:bookId
4. None of the above.

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

1. net module
2. http module
3. net module
4. url module

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32) Which of the following is the correct syntax to initiate the Node.js File?

1. filename.js
2. javascript filename.js
3. node filename.js
4. node filename

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33) Which of the following method is used to compare the placement of two nodes in the DOM hierarchy (document)?

1. cloneNode()
2. compareDocumentPosition()
3. getFeature()
4. getUserData()

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34) Which of the following platforms does Node.js support?

1. Windows
2. Macintosh
3. Unix/Linux
4. All of the above.

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35) Which of the following keyword is used to make properties and methods available outside the module file?

1. import
2. module
3. exports
4. require

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36) Which of the following Node.js object property is used to return the node immediately before a node?

1. localName
2. index
3. previousSibling
4. textContent

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37) Which of the following method can append specified content to a file?

1. fs.appendFile()
2. fs.open()
3. fs.writeFile()
4. None of the above.

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38) Which of the following is a GUI-based debugging tool for Node.js?

1. Core node debugger
2. Console
3. REPL
4. Node Inspector

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39) What is the use of underscore variable in REPL session in Node.js?

1. It is used to store the result.
2. It is used to get the last command used.
3. It is used to get the last result.
4. None of the above.

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True or False Questions

40) The buffer class is a global class that can be accessed without importing a buffer module.

1. True
2. False

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41) Is Node.js multithreaded?

1. Yes
2. No

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42) Is the process a global object and can be accessed from anywhere?

1. True
2. False

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43) Node.js uses an event-driven, non-blocking I/O model. Is it true?

1. True
2. False

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44) The net.isIP(input) returns 0 for invalid input. Is it true?

1. True
2. False

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45) A stream fires finish event when all data has been flushed to the underlying system. Is it true?

1. True
2. False

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46) A stream fires data event when there is data available to read. Is it true?

1. True
2. False

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