Computer Networking
The packets switching concept was first proposed

None of these
in the late 1980s for the Defense Ministry of US.
All of these
in the late 1950s for Defense Ministry of US
in the early 1960s for military communication systems, mainly to handle speech

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

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

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