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 Category 3 Category 5 or 5e
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
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 ( ft).
Thinnet 10BASE2
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
Cisco.netacad.net online A+ book