Computer Networking
The main difference between synchronous and asynchronous transmission is

None of these
the bandwidth required is different
the clocking is derived from the data in synchronous transmission
the pulse height is different.
the clocking is mixed with the data in asynchronous transmission

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Computer Networking
The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?

Flash should be erased and the router restarted.
NVRAM should be erased and the router restarted.
RAM should be erased and the router restarted.
The new configuration should be entered and saved.

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

signal to noise ratio divided by the ratio of energy per bit to noise per hertz
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
the probability that one or more errors will be detected when an error detection mechanism is used
None of these

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Computer Networking
What is the purpose of Spanning Tree Protocol in a switched LAN?

To prevent switching loops in networks with redundant switched paths
To provide a mechanism for network monitoring in switched environments
To prevent routing loops in networks with redundant paths
To manage the VLAN database across multiple switches
To create collision domains

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