URL Parameters and Query Strings

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Which method is used to read files on your computer in Node.js?

fs.writeFile()
fs.appendFile()
fs.open()
fs.readFile() (correct)

Which method is used to create a new file and append content to it in Node.js?

fs.open()
fs.appendFile() (correct)
fs.writeFile()
fs.readFile()

Which method is used to create a new, empty file in Node.js?

fs.appendFile()
fs.open() (correct)
fs.readFile()
fs.writeFile()

Which method is used to update a file in Node.js by replacing its content if it exists?

fs.writeFile() (A) Signup and view all the answers

Which of the following is a limitation of server-side programming?

All of the above (D) Signup and view all the answers

What is the key feature of Node.js that allows it to handle multiple requests concurrently?

Asynchronous and Non-blocking (C) Signup and view all the answers

Which of the following is NOT a use case for Node.js?

Database Management (D) Signup and view all the answers

What is the key difference between Node.js and JavaScript in browsers?

Node.js provides native system access (B) Signup and view all the answers

Which of the following is NOT a characteristic of client-side programming?

Interacts with the server to deliver user experience (A) Signup and view all the answers

Which programming environment allows JavaScript to run outside of the browser?

Node.js environment (C) Signup and view all the answers

Which of the following is NOT one of the three types of asynchronous programming models in Node.js?

Synchronous programming (B) Signup and view all the answers

Which module in Node.js is commonly used for handling HTTP requests and responses?

HTTP module (B) Signup and view all the answers

Which module is commonly used in modern web development?

ESM (C) Signup and view all the answers

Which syntax is used to import the HTTP module in Node.js?

import http from 'http' (A) Signup and view all the answers

What is the purpose of the createServer() method in the HTTP module?

To create an HTTP server (A) Signup and view all the answers

What is the purpose of the res.writeHead() method in the HTTP module?

To set the content type of the response (C) Signup and view all the answers

Which syntax is used to create asynchronous code that looks like synchronous code in JavaScript?

Async/await syntax (C) Signup and view all the answers

Which keyword is used to include a module in a Node.js file?

require (D) Signup and view all the answers

What is a module in Node.js?

A set of functions you want to include in your application (A) Signup and view all the answers

What is the purpose of the 'export' keyword in Node.js?

To make properties and methods available outside the module file (C) Signup and view all the answers

Which method is used to replace the content of a specified file in Node.js?

fs.writeFile() (A) Signup and view all the answers

Which method is used to delete a file in Node.js?

fs.unlink() (B) Signup and view all the answers

Which method is used to rename a file in Node.js?

fs.rename() (B) Signup and view all the answers

What module is used for working with file uploads in Node.js?

formidable (B) Signup and view all the answers

How can the Formidable module be installed in a Node.js application?

npm install formidable (A) Signup and view all the answers

What should be done if an error occurs while opening a requested file in a Node.js application?

Throw a 404 error (A) Signup and view all the answers

Which of the following is true about asynchronous programming in Node.js?

It is executed concurrently and continues executing other tasks while waiting for the completion of asynchronous tasks in the background. (B) Signup and view all the answers

Which mechanism is used to handle asynchronous operations in JavaScript?

Promises (B) Signup and view all the answers

What is a common drawback of using callbacks for asynchronous operations?

Callbacks can result in deeply nested and hard-to-read code. (A) Signup and view all the answers

What is the purpose of the 'package.json' file in Node.js?

To define the type of module system used in the code (D) Signup and view all the answers

Which type of programming mainly focuses on server-side web programming?

Server-side programming (B) Signup and view all the answers

Which module in Node.js is commonly used for handling HTTP requests and responses?

HTTP module (D) Signup and view all the answers

What is the purpose of the 'package.json' file in Node.js?

To define the dependencies and metadata of a Node.js project (B) Signup and view all the answers

Which module is commonly used in modern web development?

ESM Import/Export (D) Signup and view all the answers

Which method is used to create an HTTP server in Node.js?

createServer() (C) Signup and view all the answers

What is the purpose of the res.writeHead() method in the HTTP module?

To set the status code and response headers (B) Signup and view all the answers

How can the Formidable module be installed in a Node.js application?

npm install formidable (D) Signup and view all the answers

Which of the following is a key feature of Node.js?

Asynchronous and Non-blocking (B) Signup and view all the answers

What is the purpose of the 'package.json' file in Node.js?

To specify the dependencies of a Node.js project (C) Signup and view all the answers

Which module in Node.js is commonly used for handling HTTP requests and responses?

Express.js (C) Signup and view all the answers

What is a common use case for Node.js?

Real-time Applications (B) Signup and view all the answers

Which method is used to create a new file and append content to it in Node.js?

fs.appendFile() (D) Signup and view all the answers

What is the purpose of the createServer() method in the HTTP module?

To create a new HTTP server (B) Signup and view all the answers

Which module in Node.js is commonly used for handling HTTP requests and responses?

http (A) Signup and view all the answers

What is a module in Node.js?

A reusable block of code (B) Signup and view all the answers

Which method is used to handle asynchronous operations in JavaScript?

All of the above (D) Signup and view all the answers

Which module in Node.js is commonly used for handling HTTP requests and responses?

http (C) Signup and view all the answers

What is a module in Node.js?

A JavaScript file that exports a set of functions or variables (C) Signup and view all the answers

What is the purpose of the 'package.json' file in Node.js?

To specify the dependencies of a Node.js project (C) Signup and view all the answers

Which syntax is used to include a module in a Node.js file?

const http = require('http'); (B) Signup and view all the answers

Which method is used to read files on your computer in Node.js?

fs.readFile('demo.txt', 'utf-8', (err, data) => { ... }); (C) Signup and view all the answers

What is the purpose of the 'export' keyword in Node.js?

To make properties and methods available outside the module file (A) Signup and view all the answers

What is a Module in Node.js?

A set of functions you want to include in your application (D) Signup and view all the answers

Which method is used to replace the content of a specified file in Node.js?

fs.writeFile() (D) Signup and view all the answers

Which method is used to delete a file in Node.js?

fs.unlink() (B) Signup and view all the answers

Which module is commonly used for handling file uploads in Node.js?

formidable (D) Signup and view all the answers

Which method is used to replace the content of a specified file in Node.js?

fs.writeFile() (C) Signup and view all the answers

What is the purpose of the fs.unlink() method in Node.js?

To delete a specified file (B) Signup and view all the answers

Which module in Node.js is commonly used for handling HTTP requests and responses?

http (B) Signup and view all the answers

Match the following Node.js modules with their primary usage:

http = Handling HTTP requests and responses fs = Working with the file system url = Parsing URL strings path = Working with file paths Signup and view all the answers

Match the following Node.js use cases with their descriptions:

Web Applications = Creating dynamic web pages Real-time Applications = Building chat applications or gaming applications Streaming Applications = Handling large amounts of data in real time API Gateways = Managing and controlling access to multiple APIs Signup and view all the answers

Match the following Node.js features with their descriptions:

Asynchronous and Non-blocking = Allows multiple requests to be handled simultaneously JavaScript Everywhere = Uses the same programming language on both client and server-side Scalability = Ability to handle a large number of requests without performance degradation Microservices Architecture = Building complex applications as a collection of small, independent services Signup and view all the answers

Match the following key points about Node.js with their descriptions:

Fast and performant = Uses a JIT-based engine for greater server-side performance Large community and high popularity = Used by many developers and famous companies Single language in both client and server-side programming = Reduces the complexity of the development process Node.js files have extension '.js' = CommonJS or ES Module Signup and view all the answers

Match the following concepts with their descriptions:

Client-side programming = All the code and data is executed and stored locally, mainly for user interface (UI) rendering Server-side programming = Code is executed on a web server, mainly focuses on delivering complete and interactive user experience Asynchronous code = Code that allows other code to run in the meantime, without waiting for it to finish Node.js File I/O = A module in Node.js that allows reading, creating, updating, and deleting files on a computer Signup and view all the answers

Match the following Node.js concepts with their descriptions:

package.json = A file used for managing dependencies and scripts in a Node.js application Express.js = A framework that provides additional features and simplifies the development process in Node.js HTTP module = A module in Node.js that is commonly used for handling HTTP requests and responses Formidable module = A module in Node.js that is commonly used for handling file uploads Signup and view all the answers

Match the following types of programming with their key characteristics:

Client-side programming = Code and data is executed and stored locally, mainly for user interface (UI) rendering Server-side programming = Code is executed on a web server, mainly focuses on delivering complete and interactive user experience Synchronous code = Code that is executed in a sequential manner, one statement at a time Asynchronous code = Code that allows other code to run in the meantime, without waiting for it to finish Signup and view all the answers

Match the following Node.js methods with their descriptions:

writeFile() = Replaces the specified file and content unlink() = Deletes the specified file rename() = Renames the specified file createServer() = Creates an HTTP server Signup and view all the answers

Match the following file operations with their Node.js methods:

Replace the content of the file 'mynewfile3.txt' = writeFile() Delete 'mynewfile2.txt' = unlink() Rename 'mynewfile1.txt' to 'myrenamedfile.txt' = rename() Create an HTTP server = createServer() Signup and view all the answers

Match the following file upload-related terms with their descriptions:

Formidable = A module for working with file uploads in Node.js npm install formidable = Command to download and install the Formidable module formidable = Node.js module for parsing form data, especially file uploads import formidable from 'formidable' = Code to include the Formidable module in an application Signup and view all the answers

Match the following JavaScript programming concepts with their descriptions:

Promises = Used to handle asynchronous operations in JavaScript Async/await = A newer syntax in JavaScript that simplifies asynchronous programming Modules = Considered to be the same as JavaScript libraries, a set of functions you want to include in your application try/catch block = Used to handle errors in JavaScript, i.e., rejected Promise Signup and view all the answers

Match the following Node.js programming concepts with their definitions:

Built-in Modules = Node.js has a set of these modules which can be used without any further installation Create Your Own Modules = You can create these and easily include them in your Node.js applications require() = A method used to import modules in Node.js using CommonJS module import syntax ESM Import syntax = A module import/export syntax used in Node.js that is part of ECMAScript 2015 Signup and view all the answers

Match the following Node.js methods with their purposes:

fs.readFile() = Used to read files on your computer in Node.js http.createServer() = Used to create an HTTP server in Node.js res.writeHead() = Used to write the HTTP header res.end() = Used to end the response process Signup and view all the answers

Match the following JavaScript module import syntaxes with their definitions:

const http = require('http'); = Part of the CommonJS module import syntax import http from 'http'; = Uses ESM (ECMAScript 2015) module import/export syntax ./ = Used to locate a module in the same folder as the Node.js file export = A keyword used to make properties and methods available outside the module file Signup and view all the answers

Match the following Node.js file system methods with their descriptions:

fs.appendFile() = Appends specified content to a file. If the file does not exist, the file will be created. fs.open() = Opens a specified file for writing. If the file does not exist, an empty file is created. fs.writeFile() = Replaces the specified file and content if it exists. If the file does not exist, a new file, containing the specified content, will be created. fs.readFile() = Used to read files on your computer. Signup and view all the answers

Match the following URL components with their descriptions:

req.url = The URL of the current request req.headers.host = The host of the current request myURL.search = The search params for the request URL searchParams.get('param1') = The value of 'param1' in the search params Signup and view all the answers

Match the following Node.js code snippets with their outputs:

console.log(req.url); = Output: /.year=2017&month=July console.log(<code>http://${req.headers.host}</code>); = Output: <a href="http://localhost:8080">http://localhost:8080</a> const txt = searchParams.get('year') + ' ' + searchParams.get('month'); res.end(txt); = Output: 2017 July console.log('Saved.'); = Output: Saved. Signup and view all the answers

Match the following Node.js file system methods with their file creation behavior:

fs.appendFile() = Creates a file if it does not exist fs.open() = Creates an empty file if it does not exist fs.writeFile() = Creates a new file with specified content if it does not exist fs.readFile() = Does not create a file Signup and view all the answers

Match the following programming concepts with their descriptions:

Synchronous programming = Executed sequentially and waits for each task to be completed before moving on to the next one. Asynchronous programming = Executed concurrently and continues executing other tasks while waiting for the completion of asynchronous tasks in the background. Callback = In the past, due to the nature of asynchronous Javascript, many Javascript functions accept a callback argument that allows you to define code to be run after the task is completed (or failed). Promise = A new mechanism to handle asynchronous operations compared to traditional callbacks. Represents the eventual completion (or failure) of an asynchronous operation and its resulting value. Signup and view all the answers

Match the following Node.js features with their descriptions:

ESM module = The newer module system for Node.js that enables ESM module support. package.json = A file that needs to be created in order to enable the ESM module support for Node.js. Node.js file initiation = The process that needs to be done before any action can take place on a file in Node.js. Callback hell = A term used to describe a situation where callbacks are nested within other callbacks, resulting in deeply nested and hard-to-read code. Signup and view all the answers

Match the type of programming with its characteristics:

Synchronous programming = Predictable execution flow Asynchronous programming = Especially useful for waiting for I/O operation, i.e., remote call and File I/O Callback = Usually used when doing I/O, i.e., downloading files, doing File I/O, waiting for remote replies Promise = Allows defined callbacks to be run after the tasks are completed or settled in a chained way Signup and view all the answers

Match the following Node.js terms with their definitions:

Promise = A mechanism to handle asynchronous operations in Node.js that represents the eventual completion (or failure) of an asynchronous operation and its resulting value. Callback hell = A term used to describe a situation in Node.js where callbacks are nested within other callbacks, resulting in deeply nested and hard-to-read code. package.json = A file in Node.js that needs to be created to enable the ESM module support. ESM module = The newer module system for Node.js that requires the creation of a 'package.json' file. Signup and view all the answers

Match the following Node.js module import statements with their correct syntax:

HTTP module = $import$ http $from$ 'http' URL module = $import$ { URL } $from$ 'url' ESM Import = $import$ http $from$ 'http' CommonJS Import = $const$ http $=$ $require$('http') Signup and view all the answers

Match the following Node.js HTTP module methods with their correct descriptions:

$createServer()$ = Creates an HTTP server that listens to server ports and gives a response back to the client $writeHead()$ = Sends a response header to the request $write()$ = Sends a response to the client $end()$ = Ends the response process Signup and view all the answers

Match the following Node.js HTTP module methods with their correct syntax:

$createServer()$ = $http.createServer((req, res) => { ... }).listen(8080);$ $writeHead()$ = $res.writeHead(200, {'Content-Type': 'text/html; charset=utf8'});$ $write()$ = $res.write('Hello World.');$ $end()$ = $res.end();$ Signup and view all the answers

Match the following Node.js module export statements with their correct syntax:

ESM Export = $export$ { MyDateTime } $from$ 'http' CommonJS Export = $exports.MyDateTime$ $=$ $function$ () { return Date(); } Signup and view all the answers

URL Parameters and Query Strings

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Questions and Answers

Which method is used to read files on your computer in Node.js?

Which method is used to create a new file and append content to it in Node.js?

Which method is used to create a new, empty file in Node.js?

Which method is used to update a file in Node.js by replacing its content if it exists?

Which of the following is a limitation of server-side programming?

What is the key feature of Node.js that allows it to handle multiple requests concurrently?

Which of the following is NOT a use case for Node.js?

What is the key difference between Node.js and JavaScript in browsers?

Which of the following is NOT a characteristic of client-side programming?

Which programming environment allows JavaScript to run outside of the browser?

Which of the following is NOT one of the three types of asynchronous programming models in Node.js?

Which module in Node.js is commonly used for handling HTTP requests and responses?

Which module is commonly used in modern web development?

Which syntax is used to import the HTTP module in Node.js?

What is the purpose of the createServer() method in the HTTP module?

What is the purpose of the res.writeHead() method in the HTTP module?

Which syntax is used to create asynchronous code that looks like synchronous code in JavaScript?

Which keyword is used to include a module in a Node.js file?

What is a module in Node.js?

What is the purpose of the 'export' keyword in Node.js?

Which method is used to replace the content of a specified file in Node.js?

Which method is used to delete a file in Node.js?

Which method is used to rename a file in Node.js?

What module is used for working with file uploads in Node.js?

How can the Formidable module be installed in a Node.js application?

What should be done if an error occurs while opening a requested file in a Node.js application?

Which of the following is true about asynchronous programming in Node.js?

Which mechanism is used to handle asynchronous operations in JavaScript?

What is a common drawback of using callbacks for asynchronous operations?

What is the purpose of the 'package.json' file in Node.js?

Which type of programming mainly focuses on server-side web programming?

Which module in Node.js is commonly used for handling HTTP requests and responses?

What is the purpose of the 'package.json' file in Node.js?

Which module is commonly used in modern web development?

Which method is used to create an HTTP server in Node.js?

What is the purpose of the res.writeHead() method in the HTTP module?

How can the Formidable module be installed in a Node.js application?

Which of the following is a key feature of Node.js?

What is the purpose of the 'package.json' file in Node.js?

Which module in Node.js is commonly used for handling HTTP requests and responses?

What is a common use case for Node.js?

Which method is used to create a new file and append content to it in Node.js?

What is the purpose of the createServer() method in the HTTP module?

Which module in Node.js is commonly used for handling HTTP requests and responses?

What is a module in Node.js?

Which method is used to handle asynchronous operations in JavaScript?

Which module in Node.js is commonly used for handling HTTP requests and responses?

What is a module in Node.js?

What is the purpose of the 'package.json' file in Node.js?

Which syntax is used to include a module in a Node.js file?

Which method is used to read files on your computer in Node.js?

What is the purpose of the 'export' keyword in Node.js?

What is a Module in Node.js?

Which method is used to replace the content of a specified file in Node.js?

Which method is used to delete a file in Node.js?

Which module is commonly used for handling file uploads in Node.js?

Which method is used to replace the content of a specified file in Node.js?

What is the purpose of the fs.unlink() method in Node.js?

Which module in Node.js is commonly used for handling HTTP requests and responses?

Match the following Node.js modules with their primary usage:

Match the following Node.js use cases with their descriptions:

Match the following Node.js features with their descriptions:

Match the following key points about Node.js with their descriptions:

Match the following concepts with their descriptions:

Match the following Node.js concepts with their descriptions:

Match the following types of programming with their key characteristics:

Match the following Node.js methods with their descriptions:

Match the following file operations with their Node.js methods:

Match the following file upload-related terms with their descriptions:

Match the following JavaScript programming concepts with their descriptions:

Match the following Node.js programming concepts with their definitions:

Match the following Node.js methods with their purposes:

Match the following JavaScript module import syntaxes with their definitions:

Match the following Node.js file system methods with their descriptions:

Match the following URL components with their descriptions:

Match the following Node.js code snippets with their outputs: