What is the default port number for HTTP? MCQ with Answer and Explanation

What is the default port number for HTTP?
A. 21
B. 443
C. 80
D. 25
Answer: Option C
Solution (By JKExamLibrary)
Port 80 is the default port for HTTP communication. Port 443 is for HTTPS, port 21 for FTP, and port 25 for SMTP.

This question belongs to: Computer Internet and Web Technologies

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Practice More Internet and Web Technologies Questions

Question #1 Report Error
What is the primary function of an ISP in computer networks?
A. To store corporate user database systems
B. To provide internet connectivity to end users
C. To translate source domain codes
D. To manage local browser history caches

Correct Answer: Option B


Explanation:
An ISP (Internet Service Provider) is a commercial or institutional company that provides infrastructure and services to access and use the internet.

This question belongs to: Computer Internet and Web Technologies
Question #2 Report Error
What type of software utility acts as a specialized personal organizer tool deployed inside internet web mail interfaces to schedule meetings, record reminders, and track events chronologically?
A. Cookie Tracker Module Core
B. DNS Translation Lookup Client
C. Web Calendar Utility
D. FTP Directory Transfer Tool

Correct Answer: Option C


Explanation:
Web calendar utilities integrated into email suites (like Google Calendar or Outlook Calendar) enable cross-organizational scheduling and task monitoring over the internet.

This question belongs to: Computer Internet and Web Technologies
Question #3 Report Error
What is the purpose of the 'Host' header in an HTTP request?
A. To set the content type
B. To specify the client's IP address
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