| Question 1 | You are in a networking environment where a border router is configured with both OSPF and EIGRP dynamic routing protocols. Which path to a remote network is the preferred selection if EIGRP and OSPF have both discovered it? |
| A1: | Answer B is correct. The AD is the first priority given by the Cisco IOS, and EIGRP has a lower AD (90) than OSPF (110). Answer A is incorrect because IGRP is not running on this router. Answer C is incorrect because OSPF has a higher AD value and is therefore less trustworthy than EIGRP. Answer D is incorrect because, although valid, the gateway of last resort would be a factor only if no route existed in the routing table to the remote network. |
| Question 2 | Which of the following are valid ways to manipulate routing updates and filtering in a Cisco internetwork? (Choose all that apply.) -
A. Route maps -
B. Default gateways -
C. Access lists -
D. Passive interfaces |
| A2: | Answers A, C, and D are correct. Policy-based routing was introduced to Cisco administrators in IOS release 11.0 and affords network load-sharing capacities and traffic shaping by letting you have granular control of the movement of network traffic through a router with route maps. Also, access list technology is used with a variety of mechanisms to filter interfaces. The passive-interface command is also often used in the redistribution process with a link-state protocol or EIGRP to stop the router from establishing a peer ( adjacency ) with another router connected on the same interface as the link identified in the passive-interface command. Answer B is incorrect because the default-gateway command is used on servers or routers that have IP routing disabled. In other words, they are functioning as just another host on the internetwork. |
| Question 3 | Which one of the following commands prevents updates from being sent, yet allows updates to still be received and processed ? -
A. ip classless -
B. default-network -
C. passive-interface -
D. default-gateway |
| A3: | Answer C is correct. The passive-interface command is commonly used to keep routing updates from being sent out of an interface while still allowing the designated interface to receive update messages. Answer A is incorrect because ip classless mode enables a classful protocol router, such as RIP, to use the default route when it is unable to reach subnets that do not appear in the routing table. Answer B is incorrect because the default-network command is intended to relieve administrators of the necessity of manually configuring static default routes on every router in a routing domain, not to prevent updates from being sent. Answer D is incorrect because the default-gateway command is used on routers that have IP routing disabled. |
| Question 4 | Which one of the following scenarios is not a reason to deploy and operate multiple routing protocols in your internetworking environment? -
A. You need to migrate from IGRP to EIGRP over a period of months. -
B. You are about to acquire two small companies that have a number of non-Cisco routing devices and your network is currently running only EIGRP. -
C. Because of politics between the sales, finance, and developers departments, a company-wide router upgrade and redesign is impossible . The sales group must migrate to EIGRP because of a vendor relationship with the call center. The finance and developers need to be isolated as well. -
D. You are going to perform a weekend migration of all your routing devices from EIGRP to OSPF because there is a more cost-effective vendor solution. |
| A4: | Answer D is correct. This quick 72- hour migration to OSPF does not necessitate deploying and operating a multi-protocol solution. Answers A, B, and C are all excellent representations of scenarios in which a multiple protocol environment would be applicable . |
| Question 5 | You have configured a DDR ISDN WAN link between your main headquarters and a branch office, which both run EIGRP. You would like to keep extra routing update traffic from traversing this connection while still having your ASBRs aware of the remote networks. Which of the following solutions would be the best choice? -
A. Configure the ip classless command. -
B. Configure the passive-interfaces command. -
C. Configure the ip default-network command on the ASBR. -
D. Configure the router with the ip prefix-list command. |
| A5: | Answer B is correct. The passive-interface command can be implemented to designate certain routes to use when more than one AS needs to exchange updates rather than pass along the whole routing table of information. Answer A is incorrect because ip classless routing mode would simply allow a router to use the default route when it cannot reach subnets that do not appear in the routing table. Answer C is incorrect because you would generally use ip default-network to distribute a default route to other internal RIP routers. Even with this router running EIGRP, and if this command met the criteria of the question, the default route would not be redistributed by default. Answer D is incorrect because the ip prefix-list command is primarily used to create a BGP prefix list. |
| Question 6 | Which of the following is the correct route map configuration that can be used to establish guidelines based on designated minimum and maximum values? -
A. match length min max -
B. match ip address -
C. match ip min max -
D. match as-path |
| A6: | Answer A is correct. You can use the route-map configuration command match length to create filtering rules based on the length of the packet. Answer B is incorrect because you first create your standard or extended access lists to be implemented to establish the matching policy via the match ip address command. Answer C is incorrect because that syntax is match length , not match ip . Answer D is incorrect because, although a valid command, it filters based on the AS-path attribute and not the packet length. |
| Question 7 | You want to assign a default administrative distance of 165 to routes that match an access list number of 10, and that are generated from any address on any network. Which of the following would be the correct command to issue? -
A. RouterA(config-router)# distance 10 0.0.0.0 255.255.255.255 165 -
B. RouterA(config-if)# distance 165 0.0.0.0 255.255.255.255 -
C. RouterA(config-router)# distance 165 0.0.0.0 255.255.255.255 10 -
D. RouterA(config-route-map)# distance 165 0.0.0.0 255.255.255.255 10 |
| A7: | Answer C is correct. The parameter of 165 signifies the AD that designated routes will be assigned. The 0.0.0.0 255.255.255.255 represents the source address (any router) of the device providing the routing update. The number 10 at the end of the command stands for access list 10, which filters incoming routing updates to decide which ones should have their AD numbers modified. Answer A is incorrect because the AD weight value and the access list number are reversed in the syntax. Answer B is incorrect because configuration mode is wrong and the access list number is missing at the end. Answer D is incorrect because although the syntax is correct, the router is in the wrong configuration mode. |
| Question 8 | Which of the following statements are true concerning policy-based routing? (Choose 2.) -
A. By putting policy-based routing into practice, you can achieve cost savings and load-sharing capabilities. -
B. Companies can set the TOS values in IP headers at the network boundaries to provide TQM. -
C. Policy-based routing is always applied to outbound packets only. -
D. Policy-based routing was introduced in Cisco IOS release 11.0. |
| A8: | Answers A and D are correct. Policy-based routing, introduced in Cisco IOS release 11.0, provides the benefits of enabling ISPs to route traffic more efficiently , provide Quality of Service (QoS), generate cost-saving measures, and implement load-sharing techniques. Answer B is incorrect because you can set the TOS values in IP headers at the network boundaries to provide QoS, not TQM. Answer C is incorrect because policy-based routing is always applied to inbound packets only, not outbound ones. |
| Question 9 | Which of the following command sets enable you to filter outbound routing update traffic effectively? -
A. RouterA(config)# distribute-list { access-list-number name} in interface- name -
B. RouterA(config-router)# distribute-list { access-list-number name} in interface-name -
C. RouterA(config)# distribute-list { access-list-number name} out interface-name -
D. RouterA(config-router)# distribute-list { access-list-number name} out interface-name |
| A9: | Answer D is correct. This is the proper syntax and configuration mode of the distribute-list command when used in conjunction with an access-list number. Answer A is incorrect because the configuration mode is wrong. In addition, the in keyword is used rather than the out keyword. Answer B is incorrect because the in keyword is used rather than the out keyword. Answer C is incorrect because although the syntax is correct, the configuration mode is wrong. |
| Question 10 | Which of the following EXEC-mode commands would you run if you wanted to display the specific contents of a configured route map? |
| A10: | Answer A is correct. You must use the EXEC-mode command show route-map [map-name] if you want to view specific contents of a configured route map. Answer B is incorrect because the EXEC-mode command show ip policy is used to succinctly view all route maps configured on a router. Answer C is incorrect because debug ip policy is to be used rarely and is useful simply for showing policy routing packet activities on the router. Answer D is incorrect because show route map is used without the map-name parameter. The command displays information regarding all route maps that are configured on the router. |
