Question Bank - Computer Networks

Here's the question bank on all the computer networks topics.

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Consider different activities related to email.m1: Send an email from a mail client to a mail serverm2: Download an email from mailbox server to a mail clientm3: Checking email in a web browserWhich is the application level protocol used in each activity?

A.
m1 : HTTP m2 : SMTP m3 : POP
B.
m1 : SMTP m2 : FTP m3 : HTTP
C.
m1 : SMTP  m2 : POP m3 : HTTP
D.
m1 : POP m2 : SMTP m3 : IMAP

Solution:

The correct answer is option 3SMTP:SMTP stands for Simple Mail Transfer Protocol and it is an application layer protocol.SMTP is used to send an email from a mail client to a mail server.SMTP uses port 25.POP:POP stands for Post Office Protocol and it is also an application layer protocol.POP allows an email client to download an email from an email server.HTTP:The Hypertext Transfer Protocol (HTTP) is an Application Layer protocol and is used to check email in a web browser.So, m1 : SMTP m2 : POP m3 : HTTP

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