SMTP - Computer Networks Questions and Answers

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1.

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

   A.) UDP
   B.) TCP
   C.) DCCP
   D.) SCTP

Answer: Option 'B'

TCP

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2.

SMTP uses the TCP port

   A.) 22
   B.) 23
   C.) 24
   D.) 25

Answer: Option 'D'

25

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3.

SMTP connections secured by SSL are known as

   A.) SMTPS
   B.) SNMP
   C.) SSMTP
   D.) none of these

Answer: Option 'A'

SMTPS

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4.

Which one of the following protocol is used to receive mail messages?

   A.) SMTP
   B.) post office protocol
   C.) internet message access protocol
   D.) all of these

Answer: Option 'D'

all of these

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5.

What is on-demand mail relay (ODMR)?

   A.) protocol for SMTP security
   B.) an SMTP extension
   C.) protocol for web pages
   D.) none of these

Answer: Option 'B'

an SMTP extension

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6.

An email client needs to know the ____ of its initial SMTP server.

   A.) IP address
   B.) MAC address
   C.) url
   D.) none of these

Answer: Option 'A'

IP address

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7.

A SMTP session may include

   A.) zero SMTP transaction
   B.) one SMTP transaction
   C.) more than one SMTP transaction
   D.) all of these

Answer: Option 'D'

all of these

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8.

SMTP defines

   A.) message transport
   B.) message encryption
   C.) message content
   D.) none of these

Answer: Option 'A'

message transport

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9.

Which one of the following is an SMTP server configured in such a way that anyone on the internet can send e-mail through it?

   A.) open mail relay
   B.) wide mail reception
   C.) open mail reception
   D.) none of these

Answer: Option 'A'

open mail relay

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10.

SMTP is used to deliver messages to

   A.) user’s terminal
   B.) user’s mailbox
   C.) both (a) and (b)
   D.) none of these

Answer: Option 'C'

both (a) and (b)

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