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Network Cables

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Network Cables

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  1. Network Cables By Brandon O

  2. Types of Cables • Twisted-Pair • Unshielded twisted-pair (UTP) • Shielded twisted-pair (STP) • Fiber-Optic Cable

  3. Twisted-Pair • 2 insulated copper wires • Twisted around each other • Reduces crosstalk, EM, and RFI

  4. UTP (Unshielded twisted-pair) • Two-Four pairs of wires • Cancellation effect • Reduces EM and RFI interference

  5. UTP categories • Categories are based on • Number of wires in the cable • Number of twists in those wires • Category 3 • used in telephone systems • Four wire pairs • 10 Mbps • Category 5 or 5e • Four wire pairs • 100 Mbps • 5e has extra twists • Category 6 • Plastic dividers to separate wires • More twists than 5e

  6. Shielded twisted-pair (STP) • Each pair is wrapped in a metallic foil • All wires are then put in a metallic braid or foil

  7. Coaxial Cable • Copper-cored cable • Has heavy shielding • Used to connect to networks

  8. Types of Coaxial Cables • Thicknet or 10BASE5 • used in networks • 10 Mbps speed • maximum length of 500 m (1640.4 ft). • Thinnet 10BASE2 • used in networks • 10 Mbps • maximum length of 185 m (607 ft). • RG-59 – Most commonly used for cable television in the U.S. • RG-6 – Higher quality cable than RG-59, with more bandwidth and less susceptibility to interference.

  9. Fiber-Optic Cable • Made of Glass or plastic • Transmits information using light • Is not effected by EM or RFI

  10. Types of Fiber-Optic Cables • Multimode • thicker core • easier to make • can use simpler light sources (LEDs) • works well over distances of a few kilometers or less • Single-mode • very thin core • harder to make • uses lasers as a light source • transmit signals dozens of kilometers with ease

  11. Sites • http://en.wikipedia.org/wiki/File:Twisted_pair.svg • http://networking.jobstown.net/cable.html • http://www.phy.davidson.edu/stuhome/phstewart/IL/speed/Cableinfo.html • http://www.yourdictionary.com/images/optical-fiber • Cisco.netacad.net online A+ book