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 lowers the maximum usable hop count from fifteen to eight hops
   • RIPv2 carries subnet masks and supports VLSM; 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 reachable with a path length of sixteen hops
   • The route is unreachable, since RIP defines 16 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?

   • Router IDs and hostnames, with AS numbers negotiated dynamically
   • AS number and metric K-values
   • Interface bandwidth and delay, with K-values negotiated dynamically
   • 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
   • Path bandwidth and delay
   • 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 loop-free backup to the successor
    • Any route learned from a neighbor in a different autonomous system
    • A learned route whose composite metric is infinite

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

    • No, newer IOS releases disable auto-summary by default
    • Yes, and it can never be disabled
    • Yes, when redistributing OSPF routes into EIGRP, regardless of configuration
    • 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 configured on one router
    • Use metric weights to set matching K-values 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
    • Internal EIGRP, with default AD 90 versus OSPF's 110
    • 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?

    • Missing router rip network statement for that interface
    • RIP authentication is mandatory by default on newly configured interfaces
    • 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
    • DUAL speeds convergence; bandwidth/delay metrics avoid RIP's 15-hop ceiling
    • EIGRP uses a link-state database and authenticates every update without configuration
    • RIP cannot run over Ethernet