Computer Networking
In a PC to telephone hookup for long distance communication, modem is connected between the telephone line and

synchronous port
None of these
crossover cable
asynchronous port
PC

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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?

two bits or any even number of bits inverted in a byte during transmission
two bits or any even number of bits inverted in a block during transmission
None of these
one bit or any odd 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

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