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 1REPL stands for.
Answer : B
Explanation
REPL stands for Read Eval Print Loop and it represents a computer environment like a window console or Unix/Linux shell where a command is entered and system responds with an output in interactive mode.
Q 2 - What is use of Underscore Variable in REPL session?
Answer : B
Explanation
You can use undercore _ to get the last result.
Q 3 - Which of the following is true about readable stream?
A - Readable stream is used for read operation.
B - Output of readable stream can be input to a writable stream.
Answer : C
Explanation
Readable stream is used for read operation and its output can be input to a writable stream.
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)
Answer : D
Explanation
fs.read(fd, buffer, offset, length, position, callback) is the method which is used to read a file.
Q 5 - Which of the following is true about global objects in Node applications?
A - Global objects are global in nature and they are available in all modules.
Answer : C
Explanation
Node.js global objects are global in nature and they are available in all modules. We do not need to include these objects in our application, rather we can use them directly.
Q 6 - Which of the following code prints current directory?
A - console.log('Current directory: ' + process.cwd());
B - console.log('Current directory: ' + console.cwd());
C - console.log('Current directory: ' + process.currenWorkingDirectory());
Answer : A
Explanation
process.cwd() can be used to get the current working directory.
Q 7 - Which of the following module is required for network specific operations?
Answer : C
Explanation
Node.js net module is used to create both servers and clients. This module provides an aynchronous network wrapper.
Q 8 - Which of the following API creates a client?
A - net.createServer([options][, connectionListener])
B - net.connect(options[, connectionListener])
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 code can make a request to a web server?
A - http.request(options, callback)
B - http.createRequest(options, callback)
Answer : A
Explanation
http.request(options, callback) method can be used to make a request a web server.
Answer : A
Explanation
Duplex stream can be used for both read and write operation.
