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NodeJS Basics
1/25
Which of the following is a core module in Node.js?
Express
fs
Bootstrap
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2/25
What command is used to remove a package in Node.js using npm?
npm delete package-name
npm remove package-name
npm uninstall package-name
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3/25
Which of the following is an EventEmitter function used to register a listener for a named event?
event.on()
event.listen()
event.register()
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4/25
What is the purpose of the Buffer class in Node.js?
To handle binary data
To buffer all the application data in memory
To manage application caching
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5/25
Which of the following best describes the Node.js global object?
An object that provides functions and variables that can be used anywhere in the application
A global variable that stores user session data
A module that needs to be imported before use
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6/25
What is the main difference between npm and npx?
npm is a package manager, while npx is a tool to execute packages
npx is a JavaScript runtime, npm is not
npm installs packages globally, while npx does not
There is no difference; they are the same tool
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7/25
Which method is used to read the content of a file in Node.js?
fs.readFile()
fs.readContent()
fs.getContent()
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8/25
What does NPM stand for?
Node Package Manager
Network Protocol Module
New Programming Methodology
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9/25
Which of the following is NOT a valid stream in Node.js?
ReadStream
WriteStream
QuickStream
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10/25
How do you update npm to its latest version?
npm update npm
npm install -g npm@latest
npm upgrade npm
Next >
11/25
Which Node.js module is used to work with file paths?
fs
path
file
Next >
12/25
Which file extension is commonly used for Node.js modules?
.node
.js
.npm
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13/25
How can you securely store sensitive data like passwords in Node.js applications?
Using the crypto module for hashing and encryption
Storing them in a .env file as plain text
Using local storage for persistence
Encrypting them with the fs module
Next >
14/25
In Node.js, how can you listen for and respond to uncaught exceptions?
process.on('uncaughtException', function(err) {});
try...catch on the global level
window.onerror for Node.js applications
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15/25
What is the primary use of the Node.js 'events' module?
Logging events to a file
Creating and handling custom events
Scheduling events for future execution
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16/25
What does the 'nodemon' tool provide for Node.js development?
Automatic restart of your Node.js application when file changes in the directory are detected
A node version manager
Monitoring of Node.js application performance
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17/25
Which of these statements about the Node.js 'crypto' module is true?
It provides cryptographic functionality that includes a set of wrappers for OpenSSL's hash, HMAC, cipher, decipher, sign, and verify functions
It is used for creating cryptographically secure random numbers
It can only encrypt data but cannot decrypt
Next >
18/25
What are Promises in Node.js used for?
To handle asynchronous operations
To execute multiple callbacks sequentially
To generate cryptographic keys
Next >
19/25
Which function is used to read data from a readable stream in Node.js?
stream.read()
stream.getData()
stream.fetch()
Next >
20/25
How can you ensure your dependencies are installed at the exact versions listed in your package-lock.json?
npm install --exact
npm ci
npm install --lock
Next >
21/25
In Node.js, which of the following is true about environment variables?
They can store application configuration separately from code
They are accessible through the 'process.env' object
They can only be set within the application code
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22/25
Which of the following is true for process.nextTick() in Node.js?
It is used to defer the execution of a function until the next loop iteration
It schedules a function to execute at the beginning of the next event loop
It is the same as setting a timeout with zero milliseconds
Next >
23/25
What does the 'util.inspect()' method do in Node.js?
Converts an object into a string representation
Inspects the performance of a Node.js application
Checks the usability of a module
Next >
24/25
How do you make an HTTP POST request using the Axios library in Node.js?
axios.post('/url', { data })
axios('/url', 'POST', { data })
axios.send('POST', '/url', { data })
Next >
25/25
Which method is an effective way to handle rejected promises in async/await syntax in Node.js?
Using a try/catch block
Using the .catch() method on each promise
Using process.on('unhandledRejection', handler)
Next >
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