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 - Which of the following is true about Node.JS?
A - Node.js is a JavaScript based framework/platform built on Google Chrome's JavaScript V8 Engine.
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 -What npm stands for?
Answer : A
Explanation
npm stands for Node Package Manager.
Q 3 - Which of the following provides in-built events.
Answer : A
Explanation
Node has multiple in-built events available through events module.
Q 4 - Which of the following is true about Chaining streams?
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 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 print the endianness of operating system?
A - console.log('endianness : ' + os.endianness);
B - console.log('endianness : ' + os.endianness());
Answer : B
Explanation
os.endianness() returns the endianness of the CPU. Possible values are "BE" or "LE".
Q 7 - Which of the following API creates a server?
A - net.createServer([options][, connectionListener])
B - net.connect(options[, connectionListener])
Answer : A
Explanation
net.createServer([options][, connectionListener]) creates a new TCP server. The connectionListener argument is automatically set as a listener for the 'connection' event.
Q 8 - Which of the following method resolves an ip address to an array of hostnames?
B - dns.resolve(hostname[, rrtype], callback)
Answer : A
Explanation
dns.reverse(ip, callback) resolves an ip address to an array of hostnames.
Q 9 - Which of the following is true about fork methd of child_process module.
A - The fork() method method is a special case of the spawn() to create Node processes.
Answer : C
Explanation
The fork() method method is a special case of the spawn() to create Node processes. It returns object with a built-in communication channel in addition to having all the methods in a normal ChildProcess instance.
Answer : B
Explanation
A stream fires data event when there is data available to read.
