Computer Networking
ASK, PSK, FSK, and QAM are examples of _____ encoding.

digital-to-analog
analog-to-analog
digital-to-digital
analog-to-digital
None of these

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Computer Networking
The difference between a multiplexer and a statistical multiplexer is

Multiplexers often waste the output link capacity while statistical multiplexers optimize its use
Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
None of these
Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol
Statistical multiplexers need buffers while multiplexers do not need buffers

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Computer Networking
You connect a host to a switch port, but the new host cannot log into the server that is plugged into the same switch. What could the problem be?

The VTP configuration on the switch is not updated for the new host.
The router is not configured for the new host.
The switch port the host is connected to is not configured to the correct VLAN membership.
The host has an invalid MAC address.

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