info@jobexams.pk

Which protocol is used to send emails?

SMTP (Simple Mail Transfer Protocol) is the protocol used to send emails from email clients (like Outlook, Gmail) to mail servers and between mail servers over the Internet. It works at the Application Layer of the OSI model.

How it works:

The... Read More

1 COMPUTER NETWORKING MCQS

Which protocol is used to send emails?

  • FTP
  • SMTP
  • DNS
  • SSH
Correct Answer: B. SMTP

Detailed Explanation

SMTP (Simple Mail Transfer Protocol) is the protocol used to send emails from email clients (like Outlook, Gmail) to mail servers and between mail servers over the Internet. It works at the Application Layer of the OSI model.

How it works:



  • The user sends an email through an application.

  • SMTP establishes a connection with the mail server (usually on port 25, 587, or 465).

  • The email is delivered to the recipients server.

  • The recipient then retrieves it using IMAP or POP3.



Key Features:



  • SMTP is connection-oriented and text-based.

  • It supports commands like HELO, MAIL FROM, and RCPT TO.

  • Often secured using SSL/TLS for encrypted email delivery.



Conclusion: SMTP is the correct and widely used protocol to send emails across networks. Therefore, the correct answer is SMTP.

Related Questions

Computer Networking MCQs
What is the primary function of Firewall in computer networks?
0 comments
View
Computer Networking MCQs
A network of computers spread across the world is called?
0 comments
View
Computer Networking MCQs
Which of the following protocols is used for secure web browsing?
0 comments
View
Computer Networking MCQs
Which of the following is the fifth layer of the OSI model?
0 comments
View

Discussion

Thank you for your comment! Our admin will review it soon.
No comments yet. Be the first to comment!

Leave a Comment

Question Categories
General Knowledge Category MCQ'S
Computer Category MCQ'S
Chemistry Category MCQ'S
Pak Departmental Laws & Rules MCQs