Computer Networking
Carrier is

One or more conductors that serve as a common connection for a related group of devices
the condition when two or more sections attempt to use the same channel at the same time
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
None of these

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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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