tailieunhanh - CompTIA Network+ Certification Study Guide part 71

CompTIA’s Network+ certification Study Guide part 71 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. | 686 Appendix C 9. You have decided to implement redundant switches on your network that will enable packets of data to take the best possible route to its destination. Which of the following features will you want on the switches that will be used on this network so that looping doesn t occur A. STP B. UDP C. TCP D. IDS Correct answer and explanation A. STP is Spanning Tree Protocol which was designed to prevent broadcast storms that result from looping. When a switch has more than one way to communicate with a node it can cause broadcasts to go out across more than one path. This can create a loop in the way this data travels across the network. The Spanning Tree Protocol uses an algorithm that identifies that a switch has multiple ways of communicating with a single node. Incorrect answers and explanations A is incorrect because UDP is the User Datagram Protocol which is a simple transport protocol and isn t used to prevent looping on a network. B is incorrect because TCP is the Transmission Control Protocol and isn t used for preventing looping. C is incorrect because an IDS is an Intrusion Detection System. 10. You have installed new cabling to accommodate a new section of the building that is being networked. Once computers are installed you find that they are unable to connect to the network. You believe the problem is that the length of the cabling has exceeded the maximum distance allowed. You want to fix the problem with the least amount of cost and work. Which of the following will you do A. Remove the cabling and install cable that supports a longer distance. B. Install a passive hub to increase the distance that data can travel along the cable. C. Install a NIC to increase the distance that data can travel along the cable. D. Install a switch to increase the distance that data can travel along the cable. Correct answer and explanation D. Install a switch to increase the distance that data can travel along the cable. Switches have the capability to .