M

Mr. Dubey • 52.30K Points
Coach 

Q. Simple mail transfer protocol (SMTP) utilizes                    as the transport layer protocol for electronic mail transfer.

(A) tcp
(B) udp
(C) dccp
(D) sctp
Correct : Option (A)

Explanation: 
 since tcp is a reliable protocol, it’s more efficient to use tcp protocol for e-mail transfer. tcp also provides more security than other transport layer protocols.

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