1. Introduction to Networked Computing
Network Cables

2. Coaxial Cable
Radio frequency signals
Audio, video
Short distance

3. Twisted Pair Cable
UTP - Unshielded
FTP – Foil-shielded
STP - Shielded

4. Unshielded Twisted Pair
1881 – Bell, telephony systems
25 pair cables (AT&T)
outdoor telephone cables (landlines)
security video cameras

5. Twisted Pair Single singnal – return operation
Balanced pair operation:
Differencial mode
Common mode
Advantages: lightweight, flexible, thin
Disadvantages: EMI susceptibility

6. Ethernet Over TP Notation: 10Base-T Speed: 10, 100, 1000 Mbits/s
BASE- Baseband
Suffix: different standrads for physical medium:
T2 – 2 UTP wires
T4 – 4 UTP wires
TX – Extended T2 standard

7. Optical Cable (Fiber)
Signal is carried by light

8. Optical Cable (Fiber) Signal is carried by light 100B-FX 100B-SX
laser
2 strands (RX / TX)
Max. cabling length: 400 m
100B-SX
Infrared, 2 strands
Max. Cabling length: 550 m
100B-BX
single strand
Downstream / Upstream
Allows cabling length to the km range