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

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

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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 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 VTP configuration on the switch is not updated for the new host.
The host has an invalid MAC address.

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Computer Networking
What is the problem with an interface if you type show interface serial 0 and receive the following message? "Serial0 is administratively down, line protocol is down."

No cable is attached.
The administrator has the interface shut down.
The administrator is pinging from the interface.
The keepalives are different times.

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