Top 1000+ Solved Computer Networks MCQ Questions Answer
Q. An email client needs to know the _________ of its initial SMTP server.
a. ip address
b. mac address
c. url
d. name
Q. An SMTP session may not include _______
a. zero smtp transaction
b. one smtp transaction
c. more than one smtp transaction
d. one http transaction
Q. SMTP defines _______
a. message transport
b. message encryption
c. message content
d. message password
Q. SMTP is not used to deliver messages to ______
a. user’s terminal
b. user’s mailbox
c. user’s word processor
d. user’s email client
Q. The entire hostname has a maximum of ___________
a. 255 characters
b. 127 characters
c. 63 characters
d. 31 characters
Q. A DNS client is called _________
a. dns updater
b. dns resolver
c. dns handler
d. none of the mentioned
Q. Servers handle requests for other domains _______
a. directly
b. by contacting remote dns server
c. it is not possible
d. none of the mentioned
Q. DNS database contains _______
a. name server records
b. hostname-to-address records
c. hostname aliases
d. all of the mentioned
Q. If a server has no clue about where to find the address for a hostname then _______
a. server asks to the root server
b. server asks to its adjcent server
c. request is not processed
d. none of the mentioned
Q. The domain name system is maintained by _______
a. distributed database system
b. a single server
c. a single computer
d. none of the mentioned
Q. Secure shell (SSH) network protocol is used for __________
a. secure data communication
b. remote command-line login
c. remote command execution
d. all of the mentioned
Q. SSH can be used in only _____________
a. unix-like operating systems
b. windows
c. both unix-like and windows systems
d. none of the mentioned
Q. SSH uses ___________ to authenticate the remote computer.
a. public-key cryptography
b. private-key cryptography
c. any of public-key or private-key
d. both public-key & private-key
Q. Which standard TCP port is assigned for contacting SSH servers?
a. port 21
b. port 22
c. port 23
d. port 24