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wbsmith84
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What does CSMA/CD stand for?
Carrier Sense Multiple Access with Collision Detection
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10Base-T is specified by what Standard? What does the T stand for? Whats the maximum length? What does the 10 stand for?
IEEE 802.3, Twisted Pair, 100 meters, 10 Megabits Per Second capacity.
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Ethernet is considered to by what type of topology?
Logical bus
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Fast Ethernet is defined as? Whats the maximum capacity? Length?
IEEE 802.3u, 100 MBPS, 100 meters
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GigaBit Ethernet is define as? How long? Speed?
IEEE 802.3z and 802.3ab, 100 meters, 1GBPS
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What is the standard cabling type?
CAT 5 UTP
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The endpoints of the wires are refered to as?
PINS
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Pins 1 & 2 do do what?
Transmit
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Pins 3 & 6 do what?
Receive
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What is the benefit of twisting the cables?
Reduces that amount of electromagnetic interference.
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What is Crosstalk?
Electromagnetic interference that "crosses over" from one pair of cables to another making the signal unusable.
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What does NEXT stand for? What is NEXT?
- NEXT is (near end crosstalk). This is cause by
- crossed or crushed pairs of wires.
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What does FEXT stand for?
Far End Crosstalk
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This cable connects different devices. The wire connect to Pin 1 on one side is connected to Pin 1 on the other side. The wire connected to Pin 2 on one side is connected to Pin 2 on the other and so fourth.
Straight through cable
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You need to connect two similar devices directly with Ethernet. Example 2 switches need to be connected together.
Local Cable End - Pin 1 Pin 2 Pin 3 Pin 6
Remote Cble End-Pin 3 Pin 6 Pin 4 Pin 2
These wires will cross over
Cross over cable
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You use this cable to connect a laptop directly to the switch or router. All eight wires in the cable will "roll over" to another pin at the remote end. Pin 1 at one end rolling over the Pin 8 at the other end. Pin 2 one end rolling over to Pin 7 at the other end, and so fourth. It also has a DB-9 connector
Rollover cable
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Routers typically use this cable for connection to a Frame Relay network.
Serial Cables
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