RIP & EIGRP Practice Questions

Answers and explanations appear when you work through the set above.

1. What is the main practical difference between RIPv1 and RIPv2 that CCNA candidates should know?

   • RIPv2 supports a lower maximum hop count
   • RIPv2 supports VLSM and sends subnet mask information in its updates, while RIPv1 does not
   • RIPv1 uses multicast updates and RIPv2 uses broadcast
   • RIPv2 no longer uses hop count as its metric

2. A RIP-enabled router's routing table shows a route with a metric of 16. What does this mean?

   • The route is 16 hops away and fully reachable
   • The route is considered unreachable, since RIP treats 16 hops as infinity
   • The route was learned via redistribution
   • The metric reflects available bandwidth

3. Which command disables RIP's automatic summarization at classful network boundaries, which is necessary in most discontiguous VLSM designs?

   • no auto-summary
   • no classful-routing
   • version 2 by itself
   • no network summarization

4. Which command shows RIP's configured networks, timers, and the interfaces currently sending and receiving RIP updates?

   • show ip route rip
   • show ip protocols
   • show ip rip database
   • show running-config rip

5. In show ip route output, which code identifies a route learned through RIP?

   • R
   • D
   • O
   • C

6. Which command enables EIGRP for autonomous system 100 and advertises the 10.0.0.0/8 major network?

   • router eigrp 100, then network 10.0.0.0
   • router eigrp, then autonomous-system 100
   • eigrp router-id 100, then network 10.0.0.0
   • router eigrp 100, then network 10.0.0.0 255.0.0.0

7. For two routers to form an EIGRP neighbor relationship, which of the following must match?

   • Only the router IDs
   • The autonomous system number and the K-values used in the metric formula
   • Only the interface bandwidth
   • Only the hostname

8. In show ip route output, which code marks a route learned through EIGRP?

   • E
   • D
   • I
   • G

9. What does EIGRP's composite metric factor in by default?

   • Hop count only
   • Bandwidth and delay of the path
   • Only the number of autonomous systems crossed
   • Only interface MTU

10. Which command displays each EIGRP neighbor's IP address, interface, hold time, and uptime?

    • show ip eigrp neighbors
    • show ip eigrp topology
    • show ip protocols
    • show ip eigrp interfaces detail

11. In EIGRP terminology, what is a 'feasible successor'?

    • The current best route installed in the routing table
    • A backup route that is guaranteed loop-free and can be used instantly if the successor route fails
    • Any route learned from a neighbor in a different autonomous system
    • A route with an infinite metric

12. By default, does EIGRP automatically summarize routes at classful network boundaries the way RIP does?

    • No, auto-summary has been off by default since more recent IOS releases
    • Yes, and it can never be disabled
    • Only when redistributing from OSPF
    • Only on point-to-point links

13. Two routers running EIGRP fail to become neighbors, and debug output shows their K-values differ. What is the most direct fix?

    • Change the autonomous system number on one router
    • Use the metric weights command to make the K-values identical on both routers
    • Disable auto-summary on both routers
    • Lower the hello interval

14. A router has both an EIGRP and an OSPF route to the same destination network with equally specific prefixes. Which route is installed in the routing table by default?

    • The OSPF route, since it has a lower default administrative distance
    • The EIGRP route, since it has a lower default administrative distance
    • Both routes are installed and load balanced
    • Neither, since two protocols cannot advertise the same network

15. A newly configured router running RIP is not receiving any routes from its neighbor, and show ip protocols shows the connecting interface is not listed under 'Routing for Networks'. What is the likely cause?

    • The interface's subnet was never included in a network statement under router rip
    • RIP authentication is required by default
    • The neighbor is using EIGRP instead
    • The interface needs a static route configured

16. Which command shows EIGRP's topology table, including all feasible successors and their reported distances, not just the routes currently installed?

    • show ip route eigrp
    • show ip eigrp topology
    • show ip eigrp neighbors
    • show ip interface brief

17. Why might an engineer prefer EIGRP over RIP in a mid-sized enterprise network, even though both are relatively easy to configure?

    • EIGRP has a smaller configuration footprint
    • EIGRP converges faster using DUAL and scales further thanks to its bandwidth/delay based metric instead of a 15-hop limit
    • EIGRP is a link-state protocol and therefore always more secure
    • RIP cannot run over Ethernet