Computer Networking
Two computers that communicate with each other use a simple parity check to detect errors for ASCII transmissions. Which of the following events will always lead to an undeleted error?

None of these
one bit or any odd number of bits inverted in a byte during transmission
two bits or any even number of bits inverted in a byte during transmission
one bit or any odd number of bits inverted in a block of data during transmission
two bits or any even number of bits inverted in a block during 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.
RAM should be erased and the router restarted.
NVRAM should be erased and the router restarted.
The new configuration should be entered and saved.

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