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Computer Networking

Computer Networking
In cyclic redundancy checking what is the CRC?

the divisor
the remainder
the dividend
the quotient
None of these

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Computer Networking
Which of the following is considered a broadband communications channel?

microwave circuits
coaxial cable
All of these
fiber optic cable
satellites systems

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Computer Networking
Error detection at a data link level is achieved by

bit stuffing
cyclic redundancy codes
Hamming codes
equalization
None of these

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Computer Networking
How many non-overlapping channels are available with 802.11g?

40
23
3
12

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Computer Networking
What command will permit SMTP mail to only host 1.1.1.1?

access-list 10 permit tcp any host 1.1.1.1 eq smtp
access-list 110 permit tcp any host 1.1.1.1 eq smtp
access-list 10 permit smtp host 1.1.1.1
access-list 110 permit ip smtp host 1.1.1.1

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Computer Networking
What does 192 translate to in binary?

11000000
11
1111
None of these
111110

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