What is the role of the 'viewport' meta tag in responsive web design? MCQ with Answer and Explanation

What is the role of the 'viewport' meta tag in responsive web design?
A. To adapt the page layout to different screen sizes
B. To disable scaling
C. To set the zoom level
D. All of the above
Answer: Option D
Solution (By JKSSB Mock Tests)
The viewport meta tag controls the visible area and scaling for mobile devices, essential for responsive design.

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What is the function of a web crawler in a search engine?
A. To manage user queries
B. To rank search results
C. To discover and retrieve web pages for indexing
D. To display ads

Correct Answer: Option C


Explanation:
A web crawler (spider) systematically browses the web to collect pages for the search engine's index.

This question belongs to: Computer Internet and Web Technologies
Question #2
Which protocol is used for retrieving email from a server and is known for leaving messages on the server?
A. HTTP
B. IMAP
C. SMTP
D. POP3

Correct Answer: Option B


Explanation:
IMAP is designed to manage emails on the server, synchronizing across multiple devices, whereas POP3 typically downloads and removes messages.

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Question #3
Which top-level domain designation (TLD) was originally designed for network infrastructure providers but has since evolved into a general-purpose choice open to everyone?
A. .mil
B. .edu
C. .net
D. .gov

Correct Answer: Option C


Explanation:
The '.net' top-level domain stands for 'network' and was initially intended for organizations involved in networking technologies, though it is now an open domain.

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