Introduction to Networked Computing

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Presentation transcript:

Introduction to Networked Computing Network Cables

Coaxial Cable Radio frequency signals Audio, video Short distance

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

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

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

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

Optical Cable (Fiber) Signal is carried by light

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