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Computer Networking

Computer Networking
With an IP address of 201.142.23.12, what is your default subnet mask?

255.0.0.0
255.255.255.0
0.0.0.0
None of these
255.255.0.0

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Computer Networking
The CCITT Recommendation X.25 specifies three layers of communications:

physical datalink and network
None of these
Session, transport and network
datalink, network and transport
application, presentation and session

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Computer Networking
After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?

Word processor
Electronic mail
Telex
Facsimile
None of these

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Computer Networking
What does 240 translate to in binary?

None of these
1111
11100000
11110
11110000

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Computer Networking
Which of the following layer protocols are responsible for user and the application programme support such as passwords, resource sharing, file transfer and network management?

Layer 7 protocols
Layer 4 protocols
Layer 5 protocols
None of these
Layer 6 protocols

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Computer Networking
Which IP address class has few hosts per network?

C
D
None of these
A
B

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