Computer Networking
What function does a serial interface perform in data communication?

Converts parallel data into a stream of bits
Converts serial data into audio signals
Decodes incoming signals into computer data
Converts analog signals into digital signals
None of these

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Computer Networking
Which of the following is true regarding VLANs?

You must have at least two VLANs defined in every Cisco switched network.
All VLANs are configured at the fastest switch and, by default, propagate this information to all other switches.
You should not have more than 10 switches in the same VTP domain.
VTP is used to send VLAN information to switches in a configured VTP domain.

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