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Posted Date :
March 26, 2010
1. Pair of unshielded wires wound around each other.
2. Easily gets affected by EMI, RFI and crosstalk.
3. Cable offers resistance of 50 ohms.
4. Maximum segment length is 100 meters.
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Characteristics of Cables?
1. Segment Length - Length of single wire.
2. Attenuation - Indicates loss of signal.
3. Bandwidth - Amount of data carried by cable.
4. Number of Segments - Maximum number of segments in network.
5. Cost - Copper cables are cheapest, fiber optic cables are expensive.
6. Interference susceptibility and crosstalk - Defines concept of electronic interference on cables
Types of cables?
1. Coaxial cable.
2. Twisted pair cables.
Note: Copper medium is the cheapest mode of data transfer.
Twisted Pair Cables?
A pair of cables twisted around each other forms a twisted pair cable.
Types of Twisted Pair cables:-
1. Unshielded Twisted Pair.
2. Shielded Twisted pair.
1. Pair of wires wound around each other is placed inside shield.
2. Better protection from EMI, RFI and crosstalk as compared to UTP.
3. Offers resistance of 50 ohms.
4. Maximum segment length of 100 meters.
ARCNET - Cables?
1. Coaxial Cable - Inexpensive and provide high propagation factor.
2. Unshielded Twisted Pair (UTP) - Twisted pair cables are easy to terminate .
3. Fiber Optic - Lower propagation factor than coaxial cable.
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