CompTIA’s Network+ certification Study Guide part 70 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. | 676 Appendix C Correct answer and explanation D. Layer 5 switch. Layer 5 switches use information from the session layer allowing it to route packets using Uniform Resource Locators URLs . Incorrect answers and explanations A B and C. Answer A is incorrect because an external transceiver is an external device and thereby isn t built onto the NIC. Answers C and D are incorrect because neither of these are types of transceivers. They are connectors used for connecting coaxial cable. 5. You are looking into purchasing a new switch for your network. You want the switch to be able to route packets of data based on the uniform resource locator included with the packet. Which switch type should you buy A. Layer 2 switch B. Layer 3 switch C. Layer 4 switch D. Layer 5 switch Correct answer and explanation D. Layer 5 switch. Layer 5 switches use information from the session layer allowing it to route packets using Uniform Resource Locators URLs . Incorrect answers and explanations A B and C. Answer A is incorrect because Layer 2 switches work at the data link layer and look at the MAC address of the packet to determine where it is to be sent. Answer B is incorrect because Layer 3 switches work at the network layer of the OSI model and have an integrated router function that allows it to make decisions as to where the data should be sent. Answer D is incorrect because Layer 4 switches use information in the packet that identifies the application it belongs to so that priorities can be set in routing the packets to the destination computer. 6. 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 .
