Computer Networking
Microprogramming is

None of these
assembly language programming
macro programming of microcomputers
programming of minicomputers
control unit programming

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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?

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

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Computer Networking
X.21 is

network access standard for connecting stations to a circuit-switched network
a very common bit-oriented data link protocol issued by ISO
a method access control technique for multiple-access transmission media
a method of determining which device has access to the transmission medium at any time
None of these

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