Computer Networking
Which of the following is required to communicate between two computers?

All of these
communications hardware
access to transmission medium
protocol
communications software

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Computer Networking
UDP is:

Not a part of the TCP/IP suite
Connectionless and unreliable
None of these
Connection orientated and reliable
Connection oriented and unreliable

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Computer Networking
Which of the following refers to the terms "residual error rate"?

the number of bit errors per twenty four hours of continuous operation on an asynchronous line
The probability that one or more errors will be undetected when an error detection scheme is used
None of these
signal to noise ratio divided by the ratio of energy per bit to noise per hertz
the probability that one or more errors will be detected when an error detection mechanism is used

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Computer Networking
You are working with a network that has the network ID 10.9.0.0 and contains 73 networks. In the next year, you will be adding an additional 27 branch offices to your company. For simplified management, you want to keep the most possible hosts per subnet. Which subnet mask should you management, you want to keep the most possible hosts per subnet. Which subnet mask should you use?

255.254.0.0
255.224.0.0
255.252.0.0
255.240.0.0
255.248.0.0

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