Computer Networking
The network layer, in reference to the OSI model, provide

All of these
data link procedures that provide for the exchange of data via frames that can be sent and received
None of these
the interface between the X.25 network and packet mode device
the virtual circuit interface to packet-switched service

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Computer Networking
Which one of the following is true regarding VLANs?

You should not have more than 10 switches in the same VTP domain.
VLANs only work if you have a complete Cisco switched internetwork. No off-brand switches are allowed.
Two VLANs are configured by default on all Cisco switches.
VTP is used to send VLAN information to switches in a configured VTP domain.

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