Exam Prep Practice Questions

Question 1	Which of the following is a process by which a router immediately informs its neighbors about routing updates? A. Split horizon B. Poison reverse C. Hold-down timers D. Triggered updates
A1:	Answer: D . Routers use triggered updates to inform neighbors about routing updates immediately, so they don't have to wait for regular timed updates.
Question 2	Which command enables you to see the routing table? A. show ip route rip B. show ip route C. show ip interface D. show running-configuration
A2:	Answer: B. Using the show ip route command enables you to see the routing table.
Question 3	RIP2, following RIP1, is able to support which of the following? [Choose the three best answers.] A. Subnetting B. Classless Interdomain Routing (CIDR) C. Route summarization D. Variable length subnet mask (VLSM)
A3:	Answer: B, C, D . RIP2 is able to support Classless Interdomain Routing (CIDR), route summarization, and variable-length subnet masks (VLSMs).
Question 4	Suppose you are running OSPF in your core backbone routers and running RIP on the edge networks. You notice that a few of the networks are not receiving IP packets. After logging in to the router, what command should you use to see who is running OSPF? A. show ip protocols B. show ip ospf neighbors C. show ip interface D. sh ip arp
A4:	Answer: B . Using the show ip ospf neighbors command enables you to see who is running OSPF, and will list all routing information on all of the enabled OSPF interfaces.
Question 5	Which routing methods might cause a routing loop? [Choose the two best answers.] A. Split horizon has been disabled on an interface B. IP multicast routing is not enabled C. Hold-down timers are not consistent across the network D. Invalid IP addresses exist on the network
A5:	Answer: A, C . If split horizon has been disabled on the interface or the hold-down timers are not consistent across the network, a routing loop may be caused.
Question 6	Of the following, which protocol is considered a hybrid (meaning it uses both distance-vector and link-state routing algorithm)? A. RIP B. EIGRP C. IGRP D. IS-IS
A6:	Answer: B . EIGRP is an enhanced version of IGRP. EIGRP supports both routing algorithms and provides less opportunity for routing failures. EIGRP also converges very fast because it only calculates when a change in the network directly affects the routing table.
Question 7	Classless subnet masks can be used by which of the following routing protocols? [Choose the two best answers.] A. IGRP B. EIGRP C. OSPF D. RIP v1
A7:	Answer: B, C . EIGRP and OSPF support variable-length subnet masks (VLSMs) and classless address spaces. Answers A and D are incorrect because neither RIP v1 nor IGRP supports VLSM or classless addressing.
Question 8	Pick three valid IP show commands from the following: A. show ip route B. show ip interface C. show ip protocols D. show ip-route E. show protocols F. show ip-interface
A8:	Answer: A, B, C . The other commands are invalid.
Question 9	Which commands would you use to see the contents of a route map? [Choose the two best answers.] A. show running-config B. show ip route-map C. show route-map D. show ip interface
A9:	Answer: A, C . Using the show running-config and show route-map commands enables you to see the contents of a route map.
Question 10	Which of the following protocols is considered an exterior routing protocol? A. RIP B. EIGRP C. BGP D. OSPF
A10:	Answer: C . BGP is considered an exterior routing protocol that connects autonomous systems together. The latest version is BGP v4 and is mainly used by the ISP's.