Which of the following is a common character encoding used on the web? MCQ with Answer and Explanation

Question
Which of the following is a common character encoding used on the web?
A. UTF-8
B. ISO-8859-1
C. ASCII
D. All of the above
Answer: Option D
Solution (By JKSSB Mock Tests)
UTF-8, ASCII, and ISO-8859-1 are all character encodings, but UTF-8 is the most universally used on the web today.
This question belongs to: Computer Internet and Web Technologies
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Question #1
Which standard network port is mapped default to secure Shell (SSH) access lines and secure file copies via SFTP?
A. 23
B. 80
C. 21
D. 22
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Correct Answer: Option D

Explanation:
Port 22 is the standard default port assigned globally to manage secure command-line console sessions and file transfers via SSH.
This question belongs to: Computer Internet and Web Technologies
Question #2
Which part of an email address indicates the specific domain or host mail server where the mailbox is located?
A. The subject line header
B. The text preceding the '@' symbol
C. The text following the '@' symbol
D. The signature block
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Correct Answer: Option C

Explanation:
In an email address format (username@domain.com), the part following the '@' symbol represents the target host domain or mail server.
This question belongs to: Computer Internet and Web Technologies
Question #3
What is the primary function of the 'Blink' engine used in modern versions of Google Chrome and Microsoft Edge?
A. To compress incoming image files to save device RAM
B. To parse HTML and CSS code to visually render pages on the screen
C. To establish encrypted secure network handshakes
D. To filter out cross-site scripting (XSS) injection attempts
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Correct Answer: Option B

Explanation:
Blink is a browser engine (rendering engine) that transforms raw code (HTML, CSS) into interactive visual frames on a user's screen.
This question belongs to: Computer Internet and Web Technologies
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