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  5. Nokia IS-IS Routing Protocol Questions and Answers

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Questions # 11:

Question # 11

All routers in the diagram are running a link-state routing protocol. Before the link failure, all routers have operational adjacencies with each other and there is a BFD session between routers R1 and R3. After the link failure, which of the following affects the routing protocol’s convergence time?

Options:

A.

The value of the Ethernet hello timers on the switches.

B.

The value of the routingprotocol hello timers on routers R1 and R3.

C.

The value of the BFD transmit interval, receive interval and multiplier settings on routers R1 and R3.

D.

The time taken by the switches to detect that the physical ports are down.

Expert Solution
Questions # 12:

On a broadcast interface, an IS-IS router receives an LSP that is newer than the one on its database. Which of the following statements best describes the actions taken by the router as a consequence?

Options:

A.

The router sends back a copy of the LSP from its database to its neighbor.

B.

The router updates its database with the LSP and floods a copy to its neighbors on other interfaces.

C.

The router updated its database with the LSP, acknowledges the LSP with a PSNP, and floods a copy to its neighbors on other interfaces.

D.

The router updates its database with the LSP and acknowledges it with a PSNP.

Expert Solution
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