What does a "tech stack" refer to in programming?

A stack of technologies used to build and run an application

What are JavaScript frameworks?

Pre-built libraries and tools to build web apps more efficiently.

Which of the following is a correct JSON structure?

{ "name": "Alice", "age": 25, "city": "New York" }

What is the difference between a library and a plugin?

Library: reusable code for tasks / plugin: specific features for apps

Why has the use of jQuery decreased in recent years?

Browsers now support more JS features, directly.

What is a JavaScript library?

Pre-written JavaScript code that helps with common tasks

What is the main difference between a library and a framework?

Library: reusable code / Framework: complete structure for building apps

What does the term “serialization” mean in the context of JSON and APIs?

Converting data into a JSON string

Which is the correct symbol to insert a comment in JSON?

JSON doesn't support the comments

Which JavaScript method are used to turn JSON into a JavaScript obj. and vice versa, in order?

JSON.parse() and JSON.stringify()

In RESTful APIs, what does “stateless” mean?

The server does not store client session data between requests

A JS library designed to simplify DOM manipulation, animations, and AJAX.

A JS runtime environment used for building server-side applications.

Asynchronous JavaScript and XML

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24_2 Advanced JS

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Questions 25

Answers

1
console.log("F"); var p = new Promise((resolve, reject) => {console.log(1) }); console.log("E");
F E 1
1 E F
E F 1
F 1 E
2
What does a "tech stack" refer to in programming?
A stack of technologies used to build and run an application
A type of hardware for web servers
A group of developers working on a project
A storage system for programming languages
3
What are JavaScript frameworks?
Programs used to create computer hardware.
Tools for designing graphics and animations only.
Pre-built libraries and tools to build web apps more efficiently.
A replacement for HTML in web development.
4
Which of the following is a correct JSON structure?
{ name: "Alice", age: 25, city: "New York" }
{ "name": "Alice"; "age": 25; "city": "New York" }
[ "name": "Alice", "age": 25, "city": "New York" ]
{ "name": "Alice", "age": 25, "city": "New York" }
5
Which data format is JSON most similar to?
HTML
XML
YAML
CSV
6
What is the difference between a library and a plugin?
Library: reusable code for tasks / plugin: specific features for apps
A plugin is used for security, and a library is used for creating databases
Plugin replaces programming languages / Library replaces frameworks.
Library: used only for server-side code / Plugin is used only for styling
7
Why has the use of jQuery decreased in recent years?
JavaScript is no longer used for web development.
jQuery is only available as a paid library.
jQuery is not compatible with mobile devices.
Browsers now support more JS features, directly.
8
Which JSON data type is missing: Number, String, Boolean, Array, Object, and _______?
Date
Symbol
Null
Float
9
What is a JavaScript library?
A tool to debug JavaScript
Pre-written JavaScript code that helps with common tasks
A place to store JavaScript files
A collection of JavaScript books
10
In a RESTful API, which response code usually means “Internal Server Error”?
500
200
301
404
11
What type of format is used to transport and storing JSON data
php format
text format
JavaScript
xml format
12
Suppose that you've been told that p is a promise. What will typeof p return?
promise
object
function
array
13
What is the main difference between a library and a framework?
A library replaces programming languages - a framework replaces servers.
A library is for security, and a framework is for design.
Framework: only used for databases / Library is for front-end development
Library: reusable code / Framework: complete structure for building apps
14
Which HTTP method is considered idempotent in REST APIs?
PUT
CONNECT
POST
DELETE
15
Which HTTP method is commonly used to send data in a JSON format to an API?
POST
PUSH
DELETE
GET
16
GET is simpler and faster than POST
True
False
17
What does the term “serialization” mean in the context of JSON and APIs?
Converting JSON data to a binary format
Converting data into a JSON string
Encrypting data for secure transfer
Converting JSON data to XML
18
Which is the correct symbol to insert a comment in JSON?
JSON doesn't support the comments
/*…*/

//
19
Which JavaScript method are used to turn JSON into a JavaScript obj. and vice versa, in order?
All are Correct
JSON.parse() and JSON.stringify()
None are correct
JSON.stringify() and JSON.parse()
20
What is AJAX used for?
Desktop applications
Web applications
Both Web- and Desktop applications
System applications
21
Which of the following HTTP headers tells the client that the response body is in JSON format?
Cache-Control: no-cache
Authorization: Bearer
Content-Type: application/json
Accept: application/json
22
In RESTful APIs, what does “stateless” mean?
The client manages all data processing
The server has no data restrictions
The server cannot respond to multiple clients simultaneously
The server does not store client session data between requests
23
What is jQuery?
A CSS framework for designing responsive websites.
A JS library designed to simplify DOM manipulation, animations, and AJAX.
A tool for creating server-side applications only.
A programming language used to build websites from scratch.
24
What is Node.js
A framework for building mobile applications only
A database for storing JavaScript code
A CSS library for creating animations
A JS runtime environment used for building server-side applications.
25
Ajax stands for ?
Asynchronous JavaScript and XMLHttpRequest
Asynchronous Java and XML
Asynchronous JSON and XML
Asynchronous JavaScript and XML

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