GATE CS 2011 Q.9 (CS Q.9): Application Layer: DNS, HTTP, SMTP, FTP

HTML (HyperText Markup Language) has language elements which permit certain actions other than describing the structure of the web document. Which one of the following actions is NOT supported by pure HTML (without any server or client side scripting) pages?

Embed web objects from different sites into the same page

Refresh the page automatically after a specified interval

Automatically redirect to another page upon download

Display the client time as part of the page

Official answer and solution

Official answer: D
From: Official GATE 2011 answer key

Solution

Examine native HTML capabilities against dynamic client-side scripting requirements.

Option A: Pure HTML natively supports embedding external resources using img, iframe, and embed elements.

Options B and C: Pure HTML supports client-pull page refreshing and URL redirection using the meta refresh header tag (meta http-equiv="refresh" content="seconds; url=...").

Option D: Displaying the client machine's dynamic current time requires programmatic access to the client operating system clock (typically via JavaScript's Date() object) and DOM manipulation. Pure static HTML contains no mechanism to read or display client system time.

Final answer

The answer is the one in the official GATE answer key. The solution is this site's own explanation.

Source

Paper: GATE 2011 Computer Science and Information Technology (CS)
Question: 9 of 65, printed as CS Q.9
Section: Computer Science and Information Technology

This question is from a part of the syllabus that is no longer in GATE CS. It is kept because it was in the paper.

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