Computer Networking
A group of 2m - 1 routers are interconnected in a centralized binary tree, with router at each tree node. Router I communicate with router J by sending a message to the root of the tree. The root then sends the message back down to J. Then find the mean router-router path length.

2 (2m - 1)
(2m - l)/mJ
2 (m - 2)
m - 1

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Computer Networking
You save the configuration on a router with the copy running-config startup-config command and reboot the router. The router, however, comes up with a blank configuration. What can the problem be?

You didn
NVRAM is corrupted.
The newly upgraded IOS is not compatible with the hardware of the router.
The configuration register setting is incorrect.

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

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