COMPUTER NETWORKING

TRANSPORT LAYER

TRANSMISSION CONTROL PROTOCOL TCP

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these are mail protocols?
A
SMTP and POP
B
TCP and FTP
C
FTP and SMTP
D
POP and IP
Explanation: 

Detailed explanation-1: -SMTP is a push protocol, while POP3 is known as a pop protocol. SMTP sends the email from the sender’s device to the receiver’s mailbox, and POP3 retrieves and organizes emails from the receiver’s mail server to the receiver’s computer.

Detailed explanation-2: -The common protocols for email delivery are Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Simple Mail Transfer Protocol (SMTP). Each of these protocols has a standard methodology to deal with the emails and also has defined functions.

Detailed explanation-3: -In computing, the Post Office Protocol (POP) is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server. POP version 3 (POP3) is the version in common use, and along with IMAP the most common protocols for email retrieval.

Detailed explanation-4: -SMTP (Simple Mail Transfer Protocol) is a TCP/IP protocol used in sending and receiving email. SMTP is used most commonly by email clients, including Gmail, Outlook, Apple Mail and Yahoo Mail. SMTP can send and receive email, but email clients typically use a program with SMTP for sending email.

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