tailieunhanh - CompTIA Network+ Certification Study Guide part 73

CompTIA’s Network+ certification Study Guide part 73 is a globally-recognized, vendor neutral exam that has helped over 235,000 IT professionals reach further and higher in their careers. The 2009 Network+ exam (N10-004) is a major update with more focus on security and wireless aspects of networking. Our new study guide has been updated accordingly with focus on network, systems, and WAN security and complete coverage of today’s wireless networking standards. | 706 Appendix C 15. You have been asked to set up a routed network within your company. Your company routers are homogenous having standardized on Cisco. You want to set up the best routing solution within your company for this equipment. What routing protocol would you use A. RIP B. OSPF C. IS-IS D. EIGRP Correct answer and explanation D. Cisco has a proprietary routing protocol called EIGRP which they believe is the best. Cisco would recommend that you use this routing protocol. Incorrect answers and explanations A B and D. Answer A is incorrect though RIP is a standard it does not have as many factors in path determination as EIGRP. Answer B is incorrect OSPF has many factors used in path determination but is not preferred over EIGRP with Cisco equipment. Answer C is incorrect IS-IS would be a good choice but is not preferred over EIGRP on Cisco equipment. 16. You have a DHCP server that is configured to have only 10 addresses available in the pool of addresses to be handed out. When a colleague tries to lease an IP address he is unable to do so. In viewing the log you see the following packets relating to his attempt to get an address. DHCPDiscover DHCPOffer DHCPRequest DHCPNack. What might be the potential cause of the issue A. The DHCP server is not running. B. The DHCP server handed out an IP address to your colleague. C. The DHCP server was unable to hand out an IP address to his system. D. The DHCP server is really a BootP server. Correct answer and explanation C. The DHCP communicated with the client but was unable to provide an IP address indicated by the DHCPNack packet. Incorrect answers and explanations A B and D. Answer A is incorrect. The server is running because the server did send DHCPOffer and DHCPNack packets. Answer B is incorrect. The DHCPNack packet indicates that the server could not provide an IP address to your colleague. Answer D is incorrect. DHCP is just an enhanced version of the original BootP protocol. Appendix C 707 CHAPTER 8 WIDE .