CABLES

NETWORKING · TOPOLOGY · HARDWARE · CABLES

Cables:

10/100 Ethernet cables have 8 wires, of witch 4 are used for data. The other wires are twisted around the data lines for electrical stability and resistance to electrical interference. The cables end in RJ-45 connectors that resemble large telephone line connectors.

Two kinds of wiring schemes are available for Ethernet cables. Patch cables and Crossover cables. Crossover cables are special because with a single cable, two computers can be directly connected together without a hub or switch. If a cable does not say crossover, it is a standard patch cable. If you are connecting computers to a hub or switch, you need patch cables

There are also different grades of cable quality. The most common are CAT5, CAT5e and CAT6. CAT5 is good for most purposes and can transfer data at 100Mbps. CAT5e is rated for 200Mbps and CAT6 is rated for gigabit Ethernet. I like to run CAT5e whenever possible because there is usually not a cost difference from CAT5 if you look hard enough. http://www.homenethelp.com/

Coax


Twisted Pair

  • STP - (Shielded Twisted Pair)
  • Type 1 & Type 9
  • UTP - (Unshielded Twisted Pair)
  • Category 1 - No official specification, can be used for EIA-232, D.C. alarm alarm circuits & analog voice / telephone lines.
  • Category 2 - No official specification, but similar to IBM Type 3 VGM.
  • Category 3 - 10 Mbps 10BASE-T, 100 Mbps 100BASE-T4 & Others.
  • Category 4 - 16 Mbps Token Ring.
  • Category 5
  • Category 5E - 1 Gbps 1,000BASE-TX.
  • Category 6 - The Future.
  • Category 7 - The Future. www.networkstuff.net

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    JOHN O. HARGROVE
    CIS172.334
    [email protected]
    Wake Technical Community College
    © 2003

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