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CCNA 2 Module 10 V4.0
1 What action does a link-state router take immediately upon receipt of an LSP from a
neighboring router?
• floods the LSP to neighbors
calculates the SPF algorithm
runs the Bellman-Ford algorithm
computes the best path to the destination network
2 Why is it difficult for routing loops to occur in networks that use link-state routing?
Each router builds a simple view of the network based on hop count.
Routers flood the network with LSAs to discover routing loops.
• Each router builds a complete and synchronized view of the network.
Routers use hold-down timers to prevent routing loops.
3
Refer to the exhibit. What kind of information would be seen in an LSP sent from
router JAX to router ATL?
hop count
uptime of the route
• cost of the link
a list of all the routing protocols in use
4 To achieve network convergence, what three steps does each link state router take?
(Choose three.)
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use automatic summarization to reduce the size of routing tables
• build a Link State Packet (LSP) containing the state of each directly connected link
• flood the LSP to all neighbors, who then store all LSPs received in a database
discover neighbors and establish adjacencies using the hello packet sent at regular
intervals
• construct a complete map of the topology and compute the best path to each
destination network
use the DUAL FSM to select efficient, loop-free paths, and insert routes into the
routing table
5
Refer to the exhibit. When Router D is configured to use a link-state routing protocol
and is added to the network, what is the first thing that it does to begin learning the
network topology?
It sends LSP packets to Routers B and C.
It sends LSP packets to all routers in the network.
It sends Hello packets to all routers in the network.
It send