Computer Networking
A WATS arrangement

is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
is always less expensive than flat-rate service
None of these
is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
is never less expensive than flat-rate service

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

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