tailieunhanh - CompTIA Network+ Certification Study Guide part 65

CompTIA’s Network+ certification Study Guide part 65 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. | 626 CHAPTER 12 Network Troubleshooting Methodology Q What is the difference between TCP and UDP if they both operate at the transport layer A Although both TCP and UDP are transport layer protocols and provide the same basic function TCP is a connection-oriented protocol which means a session is established before data is transmitted and acknowledgments are sent back to the sending computer to verify that the data did arrive and was accurate and complete. UDP is connectionless no session or one-to-one connection is established prior to data transmission. This makes UDP the faster of the two while TCP is the more reliable. SELF TEST 1. You are a network consultant specializing in supporting Small Office Home Office SOHO networks. One of your clients maintains an office consisting of three workstations configured in a peer-to-peer workgroup. This office does not have a server computer at this time. One of the workstations OFFICE1 has an IP address of and has a file share that the other three workstations are able to access using the following syntax OFFICE1 share. Your client has called you in to troubleshoot a new workstation that they have recently installed that is unable to access this share. When you arrive on-site you find that the workstation is able to ping OFFICE1 by its IP address but not by its NetBIOS name. What is the best way for you to allow the new workstation to access the file share located on OFFICE1 A. Upgrade OFFICE1 to Windows 2003 server and configure the WINS Server service. B. Add an entry to the lmhosts file on the new workstation. C. Add an entry to the findhosts file on the new workstation. D. Upgrade OFFICE1 to Windows 2003 server and configure the DNS service. 2. You are troubleshooting network connectivity issues on a network that is running Windows servers and clients. Users are reporting that they are unable to send e-mail though they have been receiving messages from external users without a problem. During your .