Which of the following is a valid scheme in a URL? MCQ with Answer and Explanation

Which of the following is a valid scheme in a URL?
A. All of the above
B. https
C. http
D. ftp
Answer: Option A
Solution (By JKSSB Mock Tests)
http, https, and ftp are all valid URL schemes (protocols).

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Practice More Internet and Web Technologies Questions

Question #1
Which HTTP method is idempotent?
A. PUT
B. Both PUT and DELETE
C. POST
D. DELETE

Correct Answer: Option B


Explanation:
PUT and DELETE are idempotent: multiple identical requests have the same effect as a single request. POST is not idempotent.

This question belongs to: Computer Internet and Web Technologies
Question #2
Which specific browser utility or tool allows web developers to modify, inspect, and trace the active visual styles and spacing constraints of elements on a page in real time natively?
A. Local server cache monitoring console
B. Standard bookmark navigation dashboard
C. Incognito browser window frame
D. Elements Panel / Styles Inspector

Correct Answer: Option D


Explanation:
The Elements panel in browser Developer Tools provides a live, interactive view of a webpage's DOM structure and applied CSS rules, allowing developers to test design adjustments instantly on screen.

This question belongs to: Computer Internet and Web Technologies
Question #3
What is the purpose of the 'Host' header in an HTTP request?
A. To specify the client's IP address
B. To set the content type
C. To authenticate the user
D. To indicate the domain name of the server

Correct Answer: Option D


Explanation:
The Host header specifies the domain name of the server (and optionally the port) to which the request is being sent, enabling virtual hosting.

This question belongs to: Computer Internet and Web Technologies