Computer Networking
The packets switching concept was first proposed

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

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Computer Networking
Why does the data communication industry use the layered OSI reference model?1. It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.2. It enables equipment from different vendors to use the same electronic components, thus saving research and development funds.3. It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers.4. It encourages industry standardization by defining what functions occur at each layer of the model.

2 and 3
1 only
3 only
1 and 4

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Computer Networking
You type debug ip rip on your router console and see that 172.16.10.0 is being advertised to you with a metric of 16. What does this mean?

The route is 16 hops away.
The route is inaccessible.
The route has a delay of 16 microseconds.
The route is queued at 16 messages a second.
They will all load-balance.

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