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Computer Networking

Computer Networking
If you wanted to delete the configuration stored in NVRAM, what would you type?

erase nvram
erase startup
erase running
delete nvram

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Computer Networking
The probability that a single bit will be in error on a typical public telephone line using 4800 bps modem is 10 to the power -3. If no error detection mechanism is used, the residual error rate for a communication line using 9-bit frames is approximately equal to

0.003
0.999
0.009
None of these
0.991

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Computer Networking
Which of the following summation operation is performed on the bits to check an error-detecting code?

Codec
Checksum
None of these
Coder-decoder
Attenuation

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Computer Networking
What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?

Rolled
Straight-through
Crossover with a CSU/DSU
Crossover cable

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Computer Networking
What is the name of the network topology in which there are bi-directional links between each possible node?

None of these
Star
Mesh
Ring
Tree

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Computer Networking
With an IP address starting at 200, you currently have 10 subnets. What subnet mask should you use to maximize the number of available hosts?

248
240
252
224
192

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