Computer Networking
When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the clock rate determined?

By the far end router
Supplied by the CSU/DSU
By the clock rate command
By the Physical layer bit stream timing

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Computer Networking
Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?

The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence.
The update will be ignored and no further action will occur.
The updated information will replace the existing routing table entry.
The updated information will be added to the existing routing table.
They will all load-balance.

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Computer Networking
Which of the following technique is used for Time-To-Line (TTL)?

One of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size.
None of these
All of these
a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame
a technique used in best-effort delivery system to avoid endlessly looping packets.

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