Exercise: Networking

Questions for: Networking

In OSI model, which of the following layer provides error-free delivery of data?
A:
Data link
B:
Network
C:
transport
D:
Session
Answer: C
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Bulletin board system
A:
is a public access message system
B:
is a modem capable of accepting commands
C:
converts analog signals to digital signals
D:
converts digital signals to analog signals
Answer: A
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An error detecting code is which code is the remainder resulting from dividing the bits to be checked by a predetermined binary number, is known as
A:
Cyclic redundancy check
B:
Checksum
C:
Error detecting code
D:
Error rate
Answer: A
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Which of the following allows devices on one network to communicate with devices on another network?
A:
multiplexer
B:
gateway
C:
t-switch
D:
modern
Answer: B
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Packet Switch Stream (PSS) was introduced in
A:
the US in 1961 (&) the UK in 1981
B:
the UK in 1980
C:
the US in 1961
D:
None of the above
Answer: B
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