CCNP Routing Study Guide- P16

CCNP Routing Study Guide- P16:This book is intended to help you continue on your exciting new pathtoward obtaining your CCNP and CCIE certification. Before reading thisbook, it is important to have at least read the SybexCCNA: Cisco CertifiedNetwork Associate Study Guide, Second Edition.You can take the CCNPtests in any order, but you should have passed the CCNA exam before pursuingyour CCNP.
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CCNP Routing Study Guide- P16416 Appendix A Practice Exam 12. C. EIGRP routes have a default administrative distance of 90. 13. B, D. The show ip bgp neighbor command displays all the adver- tised routes, and the show ip bgp command looks at all the connections. 14. D. If you write out the networks 172.16.100.0/24 and 172.16.106.0/ 24 in binary and see how many leading bits that they have in common, you will find that the first 20 bits are the same for both networks. If you then convert these 20 bits back into decimal, you will have the address of the summarized route. 15. A and B. In an OSPF network, there must always be a backbone area, which is numbered as Area 0. If a router has any of its interfaces connected to Area 0, that router is said to be a backbone router. 16. A, B, C, E, F. Access lists, snapshot routing, compression tech- niques, Dial-on-Demand Routing (DDR), and incremental updates all can help reduce bandwidth usage. 17. A. The show ip protocols command will display such information as redistribution parameters. 18. B. The command no auto-summary is a router- configuration command that disables the automatic summarization of routes. 19. C. Classless routing protocols send prefix routing information with each update. 20. B. The other options are invalid syntax. 21. D. The show bgp neighbors command shows the configured BGP peers and the current connection status as shown above. 22. C. A transit AS is an AS through which data from one AS must travel to get to another AS. Copyright ©2001 SYBEX , Inc., Alameda, CA www.sybex.com Answers to Practice Exam 417 23. B. The answer here can be tricky. There are six initialization steps, but not all of them are always seen. Many times the Loading phase is not necessary between the Exchange state and the Full state. 24. B. Route summarization is most effective when used with contiguous address space, because contiguous address space tends to have the most higher-order bits in common. 25. C. The init state is simply the state of receiving Hello packets on the interface; no adjacencies or other information have been exchanged at this point. 26. B. Traffic sent to the virtual interface Null0 is discarded. 27. C, D. IP unnumbered is not supported on X.25 or SMDS networks. Since the serial interface has no IP number, you will not be able to ping the interface to see if it is up. However, you can determine the interface status with SNMP. Also, IP security options are not supported on an IP unnumbered interface. 28. D. Classful routing protocols send no subnet mask information with the routing updates, so all devices on the network must use the same subnet mask. 29. A. The area-id parameter in the area area-id virtual-link router-id command refers to the ID of the transit area. The transit area connects the backbone area to the area requiring the virtual link. 30. D. The show bgp neighbors command shows the configured BGP peers and the current connection status. 31. C, D, E, F. Alternate path routing, which provides redundancy and load balancing, along with snapshot routing, tunneling, and dial backup all provide stability and availability in an internetwork. 32. C. Both switches and bridges break up collision domains but are one large broadcast domain by default. All broadcasts are forwarded to all network segments with a bridge or switch.Copyright ©2001 SYBEX , Inc., Alameda, CA www.sybex.com418 Appendix A Practice Exam 33. B. The EIGRP process number is always the number assigned to an autonomous system. 34. B. Static routes have a default administrative distance of 1. 35. D. The commands router bgp 100 and neighbor 10.1.1.1 remote-as 200 configure BGP with an external BGP neighbor. 36. A, B, C. Slow convergence, non-optimal routes, and routing loops are all problems that can occur by using route redistribution. 37. D. Passive interfaces are used for such interfaces as BRI where you do not want to have routing updates sent out the interface. If routing updates were sent out of a BRI interface, then the interface would never disconnect. 38. B. The 1 refers to the access list against which the match command is testing traffic. 39. D. If you write out 255.255.255.224 in binary, you will find that the first 27 bits are ones, and the remaining five bits are zeros. Therefore, we say that it is a /27. ...