MCQ – Computer Network
1.
Which one of the following is NOT true for a computer virus?
a)
computer virus can be contracted via internet
b)
computer virus is a software
c)
another standalone computer in the vicinity of the virus affected computer may
be contracted with virus
d) pen
drives can contract with virus
Ans: C
2. How
many hosts can successfully send data simultaneously on Ethernet?
a)
1
b) 2
c)3
d) unlimited
Ans: B
3.
Which one of the following uses the greatest number of layers in the OSI model?
(a)
Bridge
(b) Repeater
(c)
Router
(d) Gateway
Ans: D
4. Which
of the fol lowing 802 standard provides for a collision free protocol?
(a)
802.2
(b) 802.3
(c)
802.5
(d) 802.6
Ans: C
5. In
asymmetric key cryptography, _______ keys are required per communicating party
a) 2
b)3
c)4
d) 5
Ans: A
6. What
is the default port number for FTP?
a)
21
b) 18
c)
25
d)20
Ans: A
7. A
digital signature is
a) a
bit string giving identity of a correspondent
b) a
unique identification of a sender
c) an
authentication of an electronic record by tying it uniquely to a key only a
sender can posses
d)an encrypted
signature of sender
Ans:C
8. A
basic telephone system is an example of
a)
packet
switching
b) cell switching
c)
circuit
switching
d) message switching
Ans: C
9. The
access method used in Ethernet LAN is
a)
CSMA/CA
b) CSMA/CD
c)
CLIP
d) CMA/CD
Ans: B
10.
Which one of the following is used to communicate between different
networks
a)
ADSL
b) HDSL
c)
Gateway
d) Modem
Ans: C
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