| 1: | You are setting up OSPF on your network and your junior administrator asks you about the router ID. She wants to know what sets the router ID for OSPF on your router. Your network is made up of ten 2611 routers with two serial, two Ethernet, and two loopback interfaces. What do you tell her? A. It's the lowest IP address on your physical interfaces. B. It's the highest IP address on your physical interfaces. C. It's the highest IP address on your logical interfaces. D. It's the lowest IP address on your logical interfaces. E. It's the lowest IP address on any interface, physical or logical.
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| 2: | Your boss asks you to explain the difference between a routed protocol and a routing protocol. Which of the following statements best describe the difference? (Choose two.) A. Routed protocols cannot cross routers. B. Routing protocols can identify data. C. Routed protocols help transport data between network segments. D. Routing protocols are used by routers to communicate routing information.
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| 3: | You have placed a static route on your router to get to Network A. You also have RIPv1 and OSPF running on your router. The router receives updates from RIP and OSPF on how to get to Network A. Which of the routes does the router use to get to Network A? |
| 4: | You issue the following command: StudentA#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B BGP D - EIGRP, EX -  EIGRP external, O - OSPF, IA OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default U - per-user static route, o - ODR Gateway of last resort is 172.31.0.1 to network 0.0.0.0 D 192.168.15.0/24 [90/2681856] via 10.0.0.2, 3w2d, Serial0/1 R 172.16.0.0/16 [120/1] via 172.31.0.1, 00:00:05, Serial0/0 172.31.0.0/16 is variably subnetted, 2 subnets, 2 masks D 172.31.0.0/16 is a summary, 3w2d, Null0 C 172.31.0.0/24 is directly connected, Serial0/0 C 192.168.250.0/24 is directly connected, Serial0/1.1 C 10.0.0.0/8 is directly connected, Serial0/1 150.1.0.0/16 is variably subnetted, 2 subnets, 2 masks C 150.1.3.0/24 is directly connected, Ethernet0/0 D 150.1.0.0/16 is a summary, 3w2d, Null0 S* 0.0.0.0/0 [1/0] via 172.31.0.1
What is the meaning of the [90/2681856] in the output following the command? A. It's the port number and hop count of the RIP routing protocol. B. It's the administrative distance and hop count of the EIGRP routing protocol. C. It's the port number and metric of the EIGRP routing protocol. D. It's the administrative distance and metric of the route learned through EIGRP.
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| 5: | On an OSPF router, you use the following command in Router Configuration mode for OSPF: network 0.0.0.0 255.255.255.255 area 0
What is the effect of this command? A. This command instructs OSPF to send an update to Area 0. B. This command configures the OSPF router with a router ID. C. This command includes all the connected interfaces and networks in the OSPF routing process. D. This command is invalid and is not accepted.
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| 6: | Which of the following is a link-state protocol that uses a complex database to choose the best route for each network? A. RIP B. OSPF C. IGRP D. BGP
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| 7: | Which of the following commands enable IGRP routing on the ExamCram 4 router? (Choose three.) A. ExamCram4(config)#router igrp B. ExamCram4(config)#router igrp 100 C. ExamCram4(config-router)#network 192.168.0.0 D. ExamCram4(config-router)#network 192.168.2.0 E. ExamCram4(config-router)#network all F. ExamCram4(config-router)#network 192.168.3.0
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| 8: | When dealing with distance-vector routing protocols, you encounter the term split-horizon. Which of the following statements describes this feature? A. It allows routers to split up networks. B. All distance-vector protocols require fallback routers that might cause momentary loops as the topology changes. C. Convergence is achieved if all information about routers is sent out on all active interfaces. D. Information about a route should not be sent back in the direction from which the original update came.
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| 9: | You are using RIP as your routing protocol. Your WAN service provider asks you to use the passive-interface command for the serial interface that is attached to the service provider. What does this command accomplish? A. It puts the interface in shutdown. B. It tells a router to send routing updates out the interface but not to listen to any routing updates. C. It allows an interface to remain up despite the fact that the service provider does not provide keepalives. D. It tells a router to receive routing updates on an interface but not to send updates via that interface.
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| 10: | You need to configure a static route to reach the 10.20.0.0 network. Which of the following is an example of the correct syntax you should use? A. ip route 10.20.0.0 255.255.0.0 10.10.0.1 B. ip route 10.20.0.0 0.0.255.255 10.10.0.1 C. route 10.20.0.0 255.255.0.0 serial 0 100 D. route 10.20.0.0 255.255.0.0 10.10.0.1
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| 11: | What class of routing protocol combines aspects of the link-state and distance-vector algorithms? A. Mix B. Hybrid C. Link-distance D. Distance-link
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| 12: | Which of the following routing protocols has a default administrative distance of 120 on Cisco routers? A. RIP B. IGRP C. OSPF D. EIGRP
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| 13: | When a router sets the metric for a network that has gone down to the maximum value, what is it doing? A. Applying split-horizon B. Putting the route in hold-down C. Poisoning the route D. Sending a triggered update
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| 14: | Which of these statements is true regarding distance-vector routing protocols? A. They send the entire routing table to directly connected neighbors. B. They send the entire routing table to every router in the network. C. They send the changes to the routing table to directly connected neighbors. D. They send the changes to the routing table to every router in the network.
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| 15: | To prevent routing loops, distance-vector routing protocols use a maximum metric. What is the maximum reachable metric for RIP? A. 10 B. 15 C. 16 D. 60 E. 100 F. 255
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| 16: | What routing loop solution prevents a router from sending information back to the neighbor that originally sent the information? A. Split-horizon B. Hold-down timer C. Maximum hop count D. Route poisoning E. Counting to infinity
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| 17: | After typing the command show ip route, you see a list of IP addresses with [120/8] next to them. What does the [120/8] mean? |
| 18: | You type show ip route on Router A to find out what entries are in your RIP routing table. Which of the following routes would not be found on a separate router receiving an RIP update from Router A? A. R 172.16.0.0/16 [120/4] B. R 192.168.9.0/24 [120/2] C. C 192.168.4.0/24 D. R 192.168.7.0/24 [120/15] E. R 192.168.8.0/24 [120/8]
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| 19: | You have configured the routers shown in the figure below using the EIGRP protocol. The relevant configuration is as follows:
Routers using EIGRP Protocol.  Washington Router: Wash(config)#router eigrp 100 Wash(config-router)#network 172.16.0.0 Wash(config-router)#network 192.168.5.0 Wash(config-router)#no auto-summary
Nevada Router: Nev(config)#router eigrp 100 Nev(config-router)#network 172.16.0.0 Nev(config-router)#network 192.168.5.0 Nev(config-router)#no auto-summary
New Mexico Router: NewM(config)#router eigrp 100 NewM(config-router)#network 172.16.0.0 NewM(config-router)#network 192.168.5.0 NewM(config-router)#no auto-summary
Users in Washington and New Mexico are complaining about connectivity issues; however, users in Nevada seem to be working just fine. What is the most likely cause of the problem? A. The EIGRP protocol is not to be used on frame relay networks. Cisco recommends using either OSPF or RIP industry standard protocols in this style of configuration. B. Because EIGRP is technically categorized as a distance-vector routing protocol, split-horizon causes problems in this configuration. C. The EIGRP autonomous system 100 is reserved for loopback routing protocol communication. D. The no auto-summary command causes routing issues in this environment because the configuration is using class C subnet masks for the 172.16.0.0 network.
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| 20: | Your boss tells you that he read about the RIP routing protocol and found out that it uses hop count for its metric. He wants to know what the default metric used by IGRP is. What do you tell him? A. Bandwidth and delay B. Hop count C. Ticks D. Bandwidth
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| 21: | You are configuring the Ike router on the network shown in the figure below. You would like to use the RIP routing protocol to propagate all the networks to the three routers shown. What configuration would you apply to Ike to have it participate in this objective?
Ike Network router. 
A. Ike(config)#router rip
Ike(config-router)#network 172.16.0.0
Ike(config-router)#network 192.168.45.0
B. Ike(config)#router rip
Ike(config-router)#network 172.16.30.0
Ike(config-router)#network 192.168.35.0
Ike(config-router)#network 192.168.45.0
Ike(config-router)#network 192.168.55.0
C. Ike(config)#router rip
Ike(config-router)#network 172.16.0.0
Ike(config-router)#network 192.168.35.0
Ike(config-router)#network 192.168.45.0
Ike(config-router)#network 192.168.55.0
D. Ike(config)#router rip
Ike(config-router)#network 172.16.0.0
Ike(config-router)#network 192.168.0.0
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| 22: | Which of the following is an example of a default static route? A. ip route 172.16.1.0 255.255.255.0 172.16.2.1 B. ip route 0.0.0.0 0.0.0.0 172.16.2.2 C. ip route 172.16.1.0 255.255.255.0 serial 0/0 D. ip route 172.16.1.0 255.255.255.0 static
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| 23: | You need to know what IP routing protocol is in use on your router. Which command should you use? A. show protocol B. show routing protocol C. show running-config D. show ip protocol
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| 24: | This dynamic routing protocol is actually a distance-vector routing protocol, but it acts like a link-state routing protocol in many ways. What is it? A. OSPF B. IGRP C. EIGRP D. RIP version 1 E. BGP F. IS-IS G. RIP version 2
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| 25: | You are configuring a network at your headquarters in Phoenix, Arizona. You decide to use a distance-vector routing protocol. What command do you need to type to activate the mechanisms that stop routing loops? (Choose two.) A. PhoenixRTR1(config-router)#split-horizon rip B. PhoenixRTR1(config-router)#split-horizon distance vector C. PhoenixRTR1(config-router)#distance vector D. PhoenixRTR1(config-router)#router igrp 100 E. PhoenixRTR1(config-router)#no routing-loops F. PhoenixRTR1(config-router)#router rip
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| 26: | In the topology shown here, which of the following statements reflect how these routers send RIP routing updates? (Choose three.) A. Router A updates Router C. B. Router C updates Router B. C. Router B updates Router D. D. Router A updates Router B.
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| 27: | Your routers do not seem to be sharing routing information. You issue the commands as shown here: ExamCram1#show running-config <some output text omitted> interface serial 0/0 ip address 172.16.12.1 255.255.255.0 encapsulation PPP ! router igrp 100 network 172.16.0.0 ExamCram2#show running-config <some output text omitted> interface Ethernet 0 no ip address administratively down interface serial 0 ip address 10.1.1.1 255.255.255.0 encapsulation PPP interface serial 1 ip address 172.16.12.2 255.255.255.0 encapsulation PPP ! router igrp 110 network 172.16.10.0 network 10.0.0.0
Why are the routing updates not working? A. The Ethernet interface does not have an IP address. B. The interfaces are using the wrong encapsulation. C. The wrong networks are being advertised. D. IGRP is incorrectly configured.
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| 28: | You have configured an OSPF interface with the bandwidth 128 command. What is the calculated OSPF cost of this link? A. 1 B. 781 C. 1562 D. 64000 E. 128000
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| 29: | You are working on the network shown in the figure. You need to configure all interfaces on the Cedar router for OSPF in Area 0. Which of the following syntax examples would accomplish this task and ensure that OSPF runs on only the interfaces depicted in the figure below?
Router network. 
A. Cedar(config)#router ospf 1
Cedar(config-router)#network 192.168.2.0 0.0.0.255 area 0
Cedar(config-router)#network 10.0.0.0 0.255.255.255 area 0
B. Cedar(config)#router ospf 1
Cedar(config-router)#network 192.168.2.0 255.255.255.0 area 0
Cedar(config-router)#network 10.1.2.0 255.255.255.0 area 0
Cedar(config-router)#network 10.1.10.0 255.255.255.0 area 0
Cedar(config-router)#network 10.1.8.0 255.255.255.0 area 0
C. Cedar(config)#router ospf 1
Cedar(config-router)#network 192.168.2.0 255.255.255.0 area 0
Cedar(config-router)#network 10.0.0.0 255.0.0.0 area 0
D. Cedar(config)#router ospf 1
Cedar(config-router)#network 192.168.2.1 0.0.0.0 area 0
Cedar(config-router)#network 10.1.2.1 0.0.0.0 area 0
Cedar(config-router)#network 10.1.10.1 0.0.0.0 area 0
Cedar(config-router)#network 10.1.8.1 0.0.0.0 area 0
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| 30: | Which statements are true regarding the command sequence shown here? (Choose three.) RouterA(config)# interface loopback 0 RouterA(config-if)# ip address 192.168.31.33 255.255.255.255
A. It creates a virtual interface. B. It uses a subnet mask. C. It ensures that an interface is always active, even if a router is shut off. D. It provides an easier way to identify OSPF routing updates. E. The mask of 255.255.255.255 is called a wildcard mask. F. These commands can be issued only to configure Ethernet interfaces.
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| 31: | You are training some new network engineers when one of them asks you the difference between classful and classless routing protocols. What do you tell him? A. They are pretty much the same, except classful protocols have more options. B. Classless supports VLSM, whereas classful supports FLSM. C. Classful can be used only between autonomous systems. D. RIPv1 and IGRP are the standard classless protocols, as they were some of the first protocols in existence.
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| 32: | Which of the following commands shows the routing table of EIGRP? |
| 33: | Which of the following are valid routing protocol troubleshooting commands? (Choose two.) A. ExamCram1#show ip route B. ExamCram1(config-if)#show ip protocols C. ExamCram1>debug ip rip D. ExamCram1#show ip protocols
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| 34: | Your senior network administrator wants you to monitor the RIP traffic on your network in real time. Which of the following commands would you issue? A. Show ip route B. Show processes C. Debug ip rip D. Show ip rip
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| 35: | You are using a distance-vector routing protocol at your branch office in Boise, Idaho. Because you are using RIP, what can you use to prevent routing loops? (Choose two.) A. Link-state advertisements (LSAs) B. Spanning-Tree Protocol C. A shortest path first tree D. Split-horizon E. Hold-down timers
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| 36: | Which of the following are considered characteristics of a link-state routing protocol? (Choose three.) A. Provides common view of entire topology B. Exchanges routing tables periodically with neighbors C. Calculates shortest path D. Utilizes event-triggered updates E. Uses routing loop prevention with split-horizon F. Utilizes only periodic updates
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| 37: | What is the advantage of using VLSM in a routed environment? A. It allows for more hosts than FLSM. B. It allows you to use different subnet masks throughout the network. C. It allows for a standard subnet mask to be used throughout the network. D. It prevents routing loops.
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| 38: | Which routing protocol has a default administrative distance of 100 on Cisco routers? A. RIP B. IGRP C. OSPF D. EIGRP
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| 39: | Which of the following commands are required to turn on RIP routing on your network? (Choose two.) A. ExamCram4(config)#router rip B. ExamCram4(config)#router rip 100 C. ExamCram4(config-router)#network 192.168.0.0 D. ExamCram4(config-router)#network all
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| 40: | Which of the following commands configures a static route on Router 1 to network 192.18.40.0/24 with an administrative distance of 90? A. Router1(config)# ip route 90 192.18.30.0 255.255.255.0 192.18.20.2 B. Router1(config)# ip route 90 192.18.20.1 255.255.255.0 192.18.20.2 C. Router1(config)# ip route 192.18.40.0 255.255.255.0 192.18.30.2 90 D. Router1(config)# ip route 192.18.30.0 255.255.255.0 192.18.20.1 90 E. Router1(config)# ip route 192.18.30.0 255.255.255.0 192.18.30.2 90
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| 41: | You are checking your router's routing protocols. Your screen shows the following: What command do you type to see this information? A. Show ip route B. Show version C. Show running-config D. Show ip protocols
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| 42: | Which of the following routing protocols are considered IGPs? (Choose four.) A. RIPv1 B. RIPv2 C. IGRP D. BGP E. OSPF
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| 43: | Your new network engineer is curious as to why you are using OSPF in your network versus EIGRP. Which of the following is a valid explanation? A. OSPF has a faster convergence time. B. OSPF is a link-state routing protocol and EIGRP is not. C. OSPF utilizes a better route calculation. D. OSPF is compatible with multiple vendors.
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| 44: | Which of the following are good candidates for static routes? |
| 45: | You have four dynamic routing protocols running in your environment. A router receives an advertisement for a particular route from all four protocols. When you type the show ip route command on this router, what routing protocol does the router prefer? A. RIP B. IGRP C. OSPF D. EIGRP
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| 46: | You need to configure a static route to reach the 172.16.0.0 network. Which of the following is an example of the correct syntax you should use? A. ip route 172.16.0.0 255.255.0.0 172.31.0.1 B. ip route 172.16.0.0 255.255.0.0 static C. route 172.16.0.0 255.255.0.0 serial 0 100 D. route 172.16.0.0 255.255.0.0 172.31.0.1
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| 47: | Split-horizon states that no advertisements will be sent back through the interface on which they were received. What mechanism overrides that behavior? |
| 48: | Which of the following network interfaces can be advertised via OSPF? (Choose three.) A. Ethernet B. Serial C. Loopback D. Console
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| 49: | Your boss asks you what "count to infinity" means on a router. Which of the following explanations is the most accurate? A. It is when a router continues to send out packets to an unknown destination. B. It is when a routing table entry continues to increment its metric without stopping. C. It is when a router calculates an unknown destination. D. It is when a router receives a poisoned route.
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| 50: | Where does OSPF contain the "map" of all the routes it knows about? A. Neighbor table B. Topology table C. Routing table D. CAM table
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