Distance Vector Routing in Computer Networks

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What is the basis of the calculation in network measurements, according to distance vector routing?

Hop count and link delay
Router's idle time and packet size
Network congestion and packet loss
Bandwidth, delay, and link queue lengths (correct)

How do adjacent routers exchange information in distance vector routing?

Using a hierarchical routing system
By broadcasting to all routers
Through centralized servers
By exchanging distance vector tables (correct)

What happens when a router receives vectors from its neighboring routers in distance vector routing?

It waits for a convergence period
It updates its routing table immediately
It ignores the information and uses its current routes
It adds the delay to the neighbor in each case and chooses the best route (correct)

What is the problem that occurs when routes take a long time to settle down in a network, causing infinite delay values?

Count to infinity problem (B) Signup and view all the answers

What is the term for the time it takes for routes to be discovered and settled in a network?

Convergence time (C) Signup and view all the answers

How does link delay get measured in distance vector routing?

By timing echo packets between adjacent routers (A) Signup and view all the answers

What is the main issue in the scenario described above?

A routing loop is created due to the relaying of paths back to a neighbour who sent them. (C) Signup and view all the answers

What is the solution to the problem described above known as?

Split Horizon (C) Signup and view all the answers

In the scenario above, what happens to the packet when the R2-to-R3 link fails?

The packet is sent back to R1 because the R2 router advertised a viable network path. (B) Signup and view all the answers

What is the purpose of Split Horizon?

To prevent routing loops by not relaying paths back to a neighbour who sent them. (D) Signup and view all the answers

What is the consequence of the R2 router relaying paths back to R1?

A routing loop is created. (A) Signup and view all the answers

What is the main cause of the routing loop in the scenario above?

The relaying of paths back to a neighbour who sent them. (D) Signup and view all the answers

What is the primary requirement for routers in link state routing?

To know the delay or cost to neighbours (D) Signup and view all the answers

Why is packet size limited in a subnet?

Due to constraints imposed by the hardware (A) Signup and view all the answers

What is the purpose of Dijkstra's SPT algorithm in network routing?

To calculate the shortest path to all other nodes (C) Signup and view all the answers

What happens to the link state data in a network?

It is flooded throughout the network (D) Signup and view all the answers

What is a consequence of large packet sizes in a network?

Long queuing delays in routers (C) Signup and view all the answers

What is the outcome of the routing process described in the text?

The discovery of the shortest path to all nodes (D) Signup and view all the answers