RIP Interview Question and Answers

Q1. What is RIP routing?

RIP stand for Routing information Protocol. It is protocol which communicates to one router to another router. It update after 30sec send his routing table to another router. It is distance vector protocol which protocol work on metric hop count after that is transferred the packet from source to destination. It has to follow shortage distance basis transfer the data.

Q2. Administrative distance value of rip?

120

Q3. What is route poisoning?

Route poisoning is a method that prevents a certain network from sending data packets to a path destination that has already became invalid. This is done when a distance vector routing protocol sees an invalid route or one with large routing loops. A route will be considered unreachable if it exceeds the maximum allowed. So the routing protocol simply informs all the routers connected in the network that a certain path is invalid by saying that it has a hop count that exceeds the maximum allowable.

Q4. What is split horizon?

Split horizon is a technique incorporated by distance vector routing protocols for avoiding routing loops by preventing the routing path to be sent/advertised back to the node from which the advertising router has received it.

Q5. What is the limit when it comes to number of hops in RIP?

15

Q6. What is multicast address of RIPv2?

224.0.0.9

Q7. Can we use rip in a scenario having more than 15 routers?

No

Q8. What is the difference between Rip and Ripng?

Difference between Rip and Ripng

Rip (routing information protocol) comes in two different versions ripv1 and ripv2. It is widely used in small and medium sized ipv4 networks due to ease of configuration, implementation and maintenance.

To route IPv6 packets, the internet engineering task force (IETF) developed Ripng based on rip. Ripng has become a main routing protocol used on ipv6 networks.

Q9. What is difference between RIPv1 and RIPV2?

RIPv1:  It’s support classful IP address

RIPv2: It’s support classless IP address

Q10. What are the four timers in rip?

Update: 30 Sec

 Invalid: 180 Sec

 Hold down: 180 Sec

 Flush: 240 Sec

Q11. Explain load-balancing in rip?

The default variance is 1, which is equal-cost load balancing. With the maximum-paths command, the router uses up to six paths to share traffic across; to limit this number, use the maximum-paths command. The multiple paths that make up a single-hop transport to a common destination are called a load-sharing group.

Q12. How do you stop rip updates from propagating out an interface on a router?

 Passive interfaces

Q13. How do we configure rip? Specify the commands.

#Router rip

#network 10.0.0.0

Q14. If a ripv2 router advertises its route, would it be received by all the devices on the network?

Ripv2 is multicast. So the route advertisement would be received only by devices which have ripv2 enabled. If the advertisement was rip v1, then it would be received by all devices on the network as ripv1 is broadcast.

Q15. Which transport layer protocol does rip use and the associated port number?

Udp – port 520

Q16. If a static route and a rip learnt route are available on a router which entry would be chosen by the router to forward the packet?

Static route would be chosen since it has lower administrative distance than rip.

Q17.  What is the major benefit of dynamic routing protocol like rip over static route?

In a static route, the route entries have to be manually configured on the router. While in a dynamic routing protocol like rip, routes are learnt automatically.

Q18. Can subnet mask information be stored in a ripv1 packet?

Ripv1 is a class full routing protocol. It does not understand classless concepts like subnets. So it is not possible.

Q19. Is a subnet mask field available in a ripv2 packet?

Ripv2 is classless routing protocol. A rip v2 packet has a field to include the subnet mask information.

Q20. Which command is used to check RIP routing?

#show ip route

#show ip protocols