There are normally several individual segments between a computer in an office and a switch in a wiring closet, as follows: The jacket covering and insulation of a wire is removed when the punchdown tool forces the wire into place. True or false? You must remove the jacket covering before securing a wire with a punchdown tool.Īnswer: False. When the spring releases, it pushes the wire into the connector. The technician places the wire in the correct location on the wall jack or punchdown block and presses down with the punchdown tool. The tool has a spring that punches down on a wire when pressed. Punchdown toolĪ punchdown tool is used to attach twisted-pair cables to wall jacks or punchdown blocks in wiring closets. You can plug the loopback plug into the NIC and verify that signals can be sent and received with the plug. Loopback plugs are commonly used to check NICs. For example, a cable tester can verify that a CAT 6 cable can transmit data at a rate of 10 Gbps using a frequency of 250 MHz. The cable tester first verifies the wiring and then verifies that the cable meets operational characteristics. They have RJ-45 ports where you connect the cable. The cable tester is used to test the operation of a cable but doesn’t include the capabilities of a toner probe to trace cables.Ĭable testers are often used with twisted-pair cables. True or false? A cable tester is used to trace cables going between two floors of a building.Īnswer: False. If the cable is wired incorrectly, the cable tester shows specifically which pins have the wrong wires. Many include LED displays to show exactly how the cable is wired. Cable testerĬable testers are used to verify that a cable is wired correctly and is operational. The other part has a speaker to play the tone when touched to the other end of the wire. One part of the toner probe creates a tone that is placed onto a wire. Toner probes are used to trace cables between rooms in a building. If you don’t hear a beep, you know the cable has a break. Similarly, when you touch both ends of a cable with each of the probes, it beeps if the cable is good. When you select the continuity check function and touch both probes together, the multimeter beeps, indicating that there is a continuous connection. This setting measures when a cable has zero resistance or is continuous from end to end. Most multimeters include a continuity checker that can be used to verify that a cable doesn’t have any breaks. Multimeters are rarely used to measure amperage (or current) through network cables. True or false? Multimeters are commonly used to measure amperage going through network cables.Īnswer: False. These are commonly used to measure voltages from power supplies but have a different use with networks. Multimeters include two probes and are used to measure voltage, amperage, and resistance. Chapters 18 and 24 of the CompTIA A+ Training Kit (Exam 220-801 and Exam 220-802), ISBN-10: 0735662681, cover these tools in much more depth.
You can use the same technique to see pictures of any of the tools mentioned in this objective. If you aren’t familiar with the different hardware tools, check out. For example, crimpers are available to secure RJ-11 connectors to phone cables and to secure RJ-45 connectors onto network cables. Other crimpers are available for other types of cables, and some can crimp multiple types of connectors. There are many specific types of crimpers, including those used to crimp RJ-45 cables onto twisted-pair cables. The wires are placed into the connector in the proper location, and the crimper squeezes the connector onto the cable. Crimpers are used to secure connectors onto cables. True or false? A crimper is used to secure an RJ-45 connector onto a twisted-pair cable.Īnswer: True. The job is much easier when technicians have the correct tools, such as wire crimpers. Network technicians are often tasked with creating cables. Exam need to know.įor example: What is the primary purpose of a crimper?įor example: What setting on a multimeter is used to check for cable breaks?įor example: What is the primary purpose of a toner probe?įor example: What information is provided by a cable tester?įor example: What is tested with a loopback plug?įor example: Where is a punchdown tool used? This objective expects you to know about many of these tools, including the scenarios when these tools are appropriate to use. Network technicians use several different tools to create cables, wire networks, and troubleshoot problems. Objective 2.10: Given a scenario, use appropriate networking tools