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

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Computer Networking
Bus is

None of these
a collection of interconnected functional units that provides a data communications service among stations attached to the network
a continuous frequency capable of being modulated or impressed with a second signal
one or more conductors that some as a common connection for a related group of devices
the condition when two or more stations attempt to use the same channel at the same time

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Computer Networking
If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?

Add the source address and port to the MAC address table and forward the frame out the destination port
Add the destination to the MAC address table and then forward the frame
Flood the network with the frame
Discard it and send an error message back to the originating host

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