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
How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates?

Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.
Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.
Configure a separate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface.
Configure many subinterfaces in the same subnet.

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