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Building Link State Packets Quiz

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Questions and Answers

What is the purpose of flooding in distributing link state packets?

To prevent loops and inconsistencies in routing tables
To send packets in a controlled manner
To prioritize packet delivery based on router ID
To distribute packets to all routers without regard for bandwidth (correct)

In which scenario should the link state packets be built according to the text?

When a router's age in the network increases significantly
When a line cost in the network decreases slightly
When a subnet is added to the network
When a neighbor router changes its properties appreciably (correct)

What is the main challenge with routers using different versions of the topology?

Improved network stability but slower data transmission
Potential for inconsistencies, loops, and unreachable machines (correct)
Higher speed but more inconsistencies
Increased bandwidth consumption

Which routing algorithm is more likely to suffer inconsistencies due to routers using different versions of the topology?

Distance Vector Routing (B) Signup and view all the answers

What is a significant drawback of Distance Vector Routing mentioned in the text?

It is vulnerable to the count-to-infinity problem. (B) Signup and view all the answers

How does Distance Vector Routing handle hop count updates?

Updates happen periodically, even if there are no topology changes. (D) Signup and view all the answers

What is a consequence of the larger routing tables in Distance Vector Routing for larger networks?

Higher chances of congestion on WAN links. (A) Signup and view all the answers

Which routing protocol mentioned in the text is at risk from the count-to-infinity problem?

Distance Vector Routing (C) Signup and view all the answers

What action is taken by a router when a new link state packet arrives?

Forwarded on all lines except the one it arrived on (B) Signup and view all the answers

How are routers able to construct the entire subnet graph for link state routing?

By accumulating a full set of link state packets (D) Signup and view all the answers

In the context of flooding, what does it mean when a packet is considered a 'duplicate'?

It is checked against the list of packets already seen and discarded (D) Signup and view all the answers

How is the memory required to store input data related to the number of routers and neighbors in a subnet for link state routing?

Memory is directly proportional to the product of number of routers and neighbors (kn) (A) Signup and view all the answers

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