Trắc Nghiệm Tổng Hợp Javascript

Học JS

Trắc Nghiệm Tổng Hợp Javascript

Câu hỏi 1: In which year was Hypertext Markup Language (HTML) introduced?

A: 1990
B: 1995
C: 1997
D: 2000

Đáp án: A

Câu hỏi 2: Which organization recommended HTML5 as a standard in 1997?

A: IEEE
B: W3C
C: ISO
D: WHATWG

Đáp án: B

Câu hỏi 3: What is the largest Wide Area Network (WAN) known today?

A: The Web
B: The Intranet
C: The Internet
D: The Ethernet

Đáp án: C

Câu hỏi 4: Which protocol is used by a Web browser to display Web pages?

A: FTP
B: SMTP
C: HTTP
D: TCP/IP

Đáp án: C

Câu hỏi 5: What is the function of a Web server?

A: To browse the Internet
B: To host and display Web pages on a browser
C: To create HTML documents
D: To provide internet connection to local devices

Đáp án: B

Câu hỏi 6: Which level of heading in HTML is displayed with the largest font size?

A: H1
B: H6
C: H3
D: H10

Đáp án: A

Câu hỏi 7: Which HTML element is used to specify a column heading in a table?

Đáp án: C

Câu hỏi 8: What does the element represent in an HTML table?

A: Table Data
B: Table Row
C: Table Reference
D: Table Range

Đáp án: B

Câu hỏi 9: By default, does an HTML table have a border?

A: Yes, a thin line
B: Yes, a bold line
C: No
D: Only if it contains headings

Đáp án: C

Câu hỏi 10: Which attribute of the element makes the border visible?

A: visible
B: border
C: grid
D: outline

Đáp án: B

Câu hỏi 11: How many levels of headings does HTML define?

A: Three
B: Four
C: Five
D: Six

Đáp án: D

Câu hỏi 12: Which tag is used to create a division or section in an HTML document?

Đáp án: C

Câu hỏi 13: Cascading Style Sheet (CSS) is used for which of the following?

A: Storing database information
B: Defining how HTML elements are displayed
C: Handling server-side logic
D: Creating network protocols

Đáp án: B

Câu hỏi 14: Which CSS3 module was NOT mentioned as released as a recommendation?

A: CSS Color Level 3
B: CSS Namespaces
C: Selectors Level 3
D: CSS Speech

Đáp án: D

Câu hỏi 15: What are the documents called that divide CSS3 into different features?

A: Chapters
B: Modules
C: Sections
D: Files

Đáp án: B

Câu hỏi 16: Which property specifies the color of text in CSS?

A: font-color
B: text-color
C: color
D: background-color

Đáp án: C

Câu hỏi 17: What is the term for the number of distinct colors represented by hardware/software?

A: Resolution
B: Color Depth
C: Contrast
D: Saturation

Đáp án: B

Câu hỏi 18: Which of the following is a common graphic format supported by the tag?

A: PDF
B: DOCX
C: JPEG
D: MP3

Đáp án: C

Câu hỏi 19: The tag is known as what type of element?

A: Container element
B: Empty element
C: Scripting element
D: Formatting element

Đáp án: B

Câu hỏi 20: What is the measurement unit for color depth?

A: Pixels per inch (ppi)
B: Dots per inch (dpi)
C: Bits per pixel (bpp)
D: Frames per second (fps)

Đáp án: C

Câu hỏi 21: Which layout module is used for one-dimensional layouts?

A: CSS Grid
B: CSS Flexbox
C: CSS Tables
D: CSS Floats

Đáp án: B

Câu hỏi 22: Which layout module is used for two-dimensional layouts?

A: CSS Flexbox
B: CSS Grid
C: CSS Inline
D: CSS Block

Đáp án: B

Câu hỏi 23: Which flexbox property is used to define the direction of items?

A: flex-wrap
B: justify-content
C: flex-direction
D: align-items

Đáp án: C

Câu hỏi 24: In Flexbox, which attribute of align-items aligns items to their baselines?

A: center
B: stretch
C: baseline
D: flex-start

Đáp án: C

Câu hỏi 25: Which Flexbox item property specifies the order in which they appear?

A: flex-grow
B: order
C: flex-shrink
D: flex-basis

Đáp án: B

Câu hỏi 26: Who developed the first version of JavaScript in 1995?

A: Tim Berners-Lee
B: Brendan Eich
C: James Gosling
D: Håkon Wium Lie

Đáp án: B

Câu hỏi 27: JavaScript is described as what type of language?

A: Compiled language
B: Object-based language
C: Low-level language
D: Machine language

Đáp án: B

Câu hỏi 28: Which JavaScript edition added 'strict mode' and JSON support in 2009?

A: ECMAScript 1
B: ECMAScript 3
C: ECMAScript 5
D: ECMAScript 6

Đáp án: C

Câu hỏi 29: In JavaScript, where does an object store its characteristics?

A: Functions
B: Methods
C: Fields (variables)
D: Events

Đáp án: C

Câu hỏi 30: Which of the following is a composite data type in JavaScript?

A: String
B: Number
C: Boolean
D: Array

Đáp án: D

Câu hỏi 31: What keyword is used to declare a function in JavaScript?

A: method
B: func
C: function
D: declare

Đáp án: C

Câu hỏi 32: Which method is used to display an alert box in JavaScript?

A: prompt()
B: alert()
C: confirm()
D: print()

Đáp án: B

Câu hỏi 33: A function is an independent reusable block of code. Where is it created?

A: Inside a tag
B: Under the element
C: Inside the element
D: Under the tag

Đáp án: B

Câu hỏi 34: What is the parent object from which all JavaScript objects are derived?

A: Window
B: Document
C: Object
D: Root

Đáp án: C

Câu hỏi 35: Which syntax is used to create an object using the built-in Object object?

A: var obj = create Object();
B: var obj = new Object();
C: var obj = Object.new();
D: var obj = {};

Đáp án: B

Câu hỏi 36: Which HTML tag provides semantic markup for better understanding?

A:
B:
C: HTML5 semantic tags
D: Formatting tags

Đáp án: C

Câu hỏi 37: What is the purpose of the tag in HTML5?

A: To speed up the website
B: To display the progress of a task
C: To create a loading spinner
D: To measure download speed

Đáp án: B

Câu hỏi 38: Which element defines a hyperlink in HTML?

Đáp án: B

Câu hỏi 39: What type of path points to a file relative to the current page?

A: Absolute path
B: Relative path
C: Fixed path
D: Direct path

Đáp án: B

Câu hỏi 40: Which tag is used to emphasize text in HTML?

Đáp án: C

Câu hỏi 41: Which HTML element is used for subscript text?

Đáp án: B

Câu hỏi 42: Which HTML element is used for superscript text?

Đáp án: C

Câu hỏi 43: What is the function of the tag?

A: To insert an image
B: To enclose inserted text
C: To create an instance
D: To install a plugin

Đáp án: B

Câu hỏi 44: What does the tag enclose?

A: Delayed text
B: Deleted text
C: Detailed text
D: Default text

Đáp án: B

Câu hỏi 45: Which CSS property is used to add spacing inside an element?

A: margin
B: border
C: padding
D: float

Đáp án: C

Câu hỏi 46: Which compression type reduces file size but preserves all data?

A: Lossy compression
B: Lossless compression
C: Algorithm compression
D: Decompression

Đáp án: B

Câu hỏi 47: Which graphic format is NOT commonly used for Web pages according to the slides?

A: JPEG
B: GIF
C: PNG
D: TIFF

Đáp án: D

Câu hỏi 48: What is the minimum resolution a Web designer can assume for a computer display?

A: 640x480
B: 800x600
C: 1024x768
D: 1920x1080

Đáp án: B

Câu hỏi 49: Which Flexbox container property is used to align items along the cross axis?

A: justify-content
B: align-items
C: flex-flow
D: flex-wrap

Đáp án: B

Câu hỏi 50: What is the shorthand property for flex-direction and flex-wrap?

A: flex-group
B: flex-flow
C: flex-layout
D: flex-set

Đáp án: B

Câu hỏi 51: In JavaScript, what consists of an object's possible actions?

A: State
B: Identity
C: Behavior
D: Fields

Đáp án: C

Câu hỏi 52: Which edition of ECMAScript was published in 2015?

A: Edition 3
B: Edition 5
C: Edition 6
D: Edition 1

Đáp án: C

Câu hỏi 53: Which function is used to convert a string to an integer in JavaScript?

A: toInteger()
B: parseInt()
C: Number()
D: convertInt()

Đáp án: B

Câu hỏi 54: Which attribute of the element is used to combine rows?

A: colspan
B: rowspan
C: merge
D: combine

Đáp án: B

Câu hỏi 55: What does the element specify in an HTML table?

A: Table Header
B: Table Division (Columns for each row)
C: Table Description
D: Table Design

Đáp án: B

Câu hỏi 56: Which tag is used to specify a unique ID for an HTML element?

A: class
B: name
C: id
D: title

Đáp án: C

Câu hỏi 57: Which tag defines an inline style for an element?

A:
B: style attribute
C:
D:

Đáp án: B

Câu hỏi 58: What is the primary role of the tag?

A: To create a block-level container
B: To group inline-elements for styling
C: To insert line breaks
D: To create a navigation bar

Đáp án: B

Câu hỏi 59: Which attribute of specifies the text direction?

A: lang
B: dir
C: xml:lang
D: style

Đáp án: B

Câu hỏi 60: Which property in CSS3 allows designers to animate elements?

A: transition
B: animation
C: transform
D: movement

Đáp án: B

Câu hỏi 61: Which CSS3 module handles media-specific styles?

A: CSS Namespaces
B: Media Queries
C: Selectors Level 3
D: CSS Style Attributes

Đáp án: B

Câu hỏi 62: How are multiple selectors separated in a single CSS rule?

A: Semicolon
B: Colon
C: Comma
D: Space

Đáp án: C

Câu hỏi 63: What informs the browser how to present an HTML document?

A: JavaScript
B: HTTP
C: CSS
D: URL

Đáp án: C

Câu hỏi 64: Which heading level has the smallest font size?

A: H1
B: H3
C: H6
D: H5

Đáp án: C

Câu hỏi 65: What is the first step to view a Web page in a browser?

A: Server sends a response
B: User specifies URL in a browser
C: Browser sends a URL request
D: Server processes the request

Đáp án: B

Câu hỏi 66: Which protocol specifies how a Web page is retrieved from a server?

A: FTP
B: HTTP
C: DNS
D: IP

Đáp án: B

Câu hỏi 67: What does WWW stand for?

A: Wide World Web
B: World Wide Web
C: Web World Wide
D: World Web Wide

Đáp án: B

Câu hỏi 68: What resulted from the necessity to share data across the globe?

A: LAN
B: Evolution of the Web
C: Stand-alone computers
D: Local networks

Đáp án: B

Câu hỏi 69: Which language was introduced to ensure maximum user interactivity on Web pages?

A: HTML
B: CSS
C: JavaScript
D: XML

Đáp án: C

Câu hỏi 70: Which attribute of the element combines multiple columns?

A: rowspan
B: colspan
C: width
D: cellspacing

Đáp án: B

Câu hỏi 71: In Flexbox, which property is used to distribute space between items?

A: align-content
B: justify-content
C: flex-wrap
D: display

Đáp án: B

Câu hỏi 72: What are entities with properties and methods in JavaScript called?

A: Variables
B: Objects
C: Functions
D: Scripts

Đáp án: B

Câu hỏi 73: What specifies the characteristics of a JavaScript object?

A: Methods
B: Properties
C: Functions
D: Events

Đáp án: B

Câu hỏi 74: Which type of navigation bar is based solely on text?

A: Graphical Navigation Bar
B: Text-based Navigation Bar
C: Image Map
D: Division Bar

Đáp án: B

Câu hỏi 75: What is the intersection of a row and a column in a table called?

A: Block
B: Cell
C: Grid
D: Section

Đáp án: B

Câu hỏi 76: Which tag can be used with JavaScript to show the progress of a task?

Đáp án: B

Câu hỏi 77: What are CSS3 'modules'?

A: Separate programming languages
B: Multiple documents dividing CSS3 features
C: Plugins for browsers
D: Hardware components

Đáp án: B

Câu hỏi 78: Which compression algorithm creates a link between an image and an HTML page?

A: Lossy
B: The tag (it creates a link, doesn't insert)
C: Lossless
D: Decompression

Đáp án: B

Câu hỏi 79: What is the primary purpose of the tag in an HTML document?

A: To display the main content
B: To contain meta-information like the title
C: To create a header section
D: To host the navigation menu

Đáp án: B

Câu hỏi 80: Which keyword is used to invoke a function in JavaScript?

A: call
B: Function name followed by parenthesis
C: invoke
D: run

Đáp án: B