ITSP 136 chapter 8
Which of the following is a group of Windows desktop computers located in a small area? A. LAN B. WAN C. PAN D. MAN
A. A local area network (LAN) is a group of computers, such as a SOHO network located in a small area. A wide area network (WAN) is a group of one or more LANs spread over a larger geographic area. A personal area network (PAN) is a smaller computer network used by smartphones and other small computing devices. A metropolitan area network (MAN) is a group of LANs in a smaller geographic area of a city.
Which Internet service makes use of PSTN? A. Dial-up B. ISDN C. DSL D. Cable Internet
A. Dial-up Internet connections make use of the public switched telephone network (PSTN) and POTS phone lines. ISDN was developed to meet the limitations of PSTN. DSL provides faster data transmissions over phone lines (or separate data lines). Cable Internet is a broadband service that offers higher speeds than DSL; it is provided by cable TV companies.
Your boss is concerned with overlapping wireless networks from neighboring companies using 802.11ac. Which tool should you use to analyze the problem, and which frequency should you display for analysis? A. Wi-Fi analyzer; 5 GHz B. Cable certifier; 5 GHz C. Loopback plug; 2.4 GHz Image D. Wi-Fi analyzer; 2.4 GHz
A. To analyze the problem, use a Wi-Fi analyzer! Because your boss is concerned about wireless networks using 802.11ac, you would display the results for 5-GHz networks, not 2.4 GHz. Cable certifiers are used to check long-distance wired connections, for example, from a patch panel to an RJ45 jack. The loopback plug is used to simulate a network connection, which can help with identifying switch ports, and testing a PC's network connection.
Which tool is used to test a network adapter not connected to the network? A. Punchdown tool B. Cable tester C. Loopback plug D. Tone generator and probe
C. To test a network adapter without a network connection, you would use a loopback plug. This simulates a network connection. It can also be used to test a switch port. Punchdown tools are used to punch individual wires to a patch panel. Cable testers such as continuity testers test the entire length of a terminated cable. A tone generator and probe kit can also test a cable's length, but only tests one pair of wires at a time.
What would be required to attach RJ45 plugs to the ends of a single patch cable? A. Tone and probe kit B. Multimeter C. Cable stripper D. Crimper
D. RJ45 plugs are attached to the cable ends with a tool called a crimper. A tone generator and probe kit is used to trace hard-to-find telecommunication and data communication cables/wires. A multimeter can be used to test continuity of a patch cable. A cable stripper is used to strip a portion of the plastic jacket off the cable, exposing the individual wires.
You have been tasked with setting up a small office with the fastest Internet service possible. There is no fiber optic availability in the area because of the rocky, hilly terrain. Which Internet service will typically offer the best data transfer rates? A. WMN B. FTTP C. DSL D. Cable Internet E. Fixed wireless
D. The Internet service with the best data transfer rates will typically be cable Internet. Cable Internet service is generally "faster" than DSL. WMN stands for wireless mesh network, a type of network that uses multiple access points—but it is not an Internet service. FTTP stands for fiber to the premises, which is not available in the scenario. Fixed wireless (or line-of-sight wireless Internet service) can offer very high data transfer rates, but it requires an unobstructed view of the provider's tower. This is probably not an option due to the rocky, hilly area where the customer's office resides.