By Glen Clarke
The most sensible totally built-in learn method available
With enormous quantities of perform questions and hands-on routines, CompTIA community+ Certification learn consultant, Fourth Edition covers what you want to know-and exhibits you the way to prepare-for this tough examination.
- 100% entire insurance of all authentic goals for the CompTIA community+ exam
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Covers all of the examination subject matters, including:
Basic community thoughts * community Protocols and criteria * Networking elements * Subnetting and Routing * TCP/IP Utilities * instant Networking * distant Connectivity * huge region community applied sciences * community Implementation * community upkeep and help * community safeguard * community Troubleshooting
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Additional resources for CompTIA Network plus Certification Study Guide
The twists in the wires help shield against electromagnetic interference. The maximum distance of UTP is 100 meters. UTP cable uses small plastic connectors designated as registered jack 45, or most often referred to as RJ-45. RJ-45 is similar to the phone connectors, except that instead of four wires, as found in the home system, the network RJ-45 connector contains eight contacts, one for each wire in a UTP cable. The bottom cable in Figure 1-17 is an RJ-45 connector. It can be easy to confuse the RJ-45 connector with the RJ-11 connector.
Once you have cut a clean end on the cable, strip about an inch off the outer jacket from the cable using the wire-stripper portion of your crimping tool, as shown in the next illustration. After stripping the outer jacket off, make sure that you have not cut into any of the individual wires. If you have, cut a clean end off the cable again and start from the beginning. Network Media and Connectors 29 3. Once you have stripped the outer jacket off the cable, order the wires from left to right to follow the 568B standard.
The terminator is designed to absorb the signal when the signal reaches the end, preventing signal bounce. If there is no termination, the entire network fails because of signal bounce, which also means that if there is ever a break in the cable, you will have unterminated ends and the entire network will go down, as shown in Figure 1-5. Figure 1-4 With a bus topology, all system, are connected to one linear cable. Identifying Network Topologies 11 Figure 1-5 A break in the cable with the bus topology causes the entire network to fail.