Computer Networking
The packets switching concept was first proposed

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

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

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