Computer Networking
You are unsuccessful in telnetting into a remote device. What could the problem be?1. IP addresses are incorrect.2. Access control list is filtering Telnet.3. There is a defective serial cable.4. The VTY password is missing.

3 only
1 only
2 and 4 only
All of these

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Computer Networking
A WATS arrangement

is always less expensive than flat-rate service
is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
is never 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

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