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Computer networking from Wan to Lan
chapter 4
16
Computer Networking
Undergraduate 3
11/02/2010

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Term
5-4-3 Rule
Definition
An Ethernet LAN rule that stands for 5 segments, 4 repeaters, and 3 segments with nodes allowed in a single collision domain
Term
Carrier extension
Definition
Technique used in gigabit Ethernet to extend the minimum length of an Ethernet Frame
Term
Collision domain
Definition
A portion of a network where two or more stations transmitting at the same time will interfere with each other.
Term
CRC
Definition
Cyclic redundancy check. An error detection scheme able to detect bit errors in streams of bits of varying length
Term
CSMA/CA
Definition
Carrier sense multiple access with collision avoidance. An IEEE 802.11 Standard access method for wireless Ethernet
Term
CSMA/CD
Definition
Carrier sense multiple access with collision Detection. An IEEE 802.3 Standard access method used to share bandwidth among a maximum of 1024 stations. Two or more stations transmitting at a time will cause a collision , forcing random waiting periods before retransmission is attempted
Term
Fast Ethernet
Definition
This is the term used for 100-Mbps Ethernet
Term
Fast link pulse
Definition
Beginning with fast Ethernet, fast link pulses are used to perform auto negotiation on a hardware link(such as a UTP cable)
Term
FOIRL
Definition
Fiber optic inter repeater link . the original specification for Ethernet communication over fiber.
Term
Frame Bursting
Definition
Technique used in Gigabit Ethernet to send multiple frames in a small window of time
Term
Gigabit Ethernet
Definition
This is the term used for 1000-Mbps Ethernet
Term
Interframe Gap
Definition
A deliberate gap of 96 bit times between successive Ethernet frames
Term
Jabber
Definition
An out-of-control station transmitting garbage
Term
Jam sequence
Definition
A 32 bit sequence generated when a collision is detected, to guarantee all stations are notified of the collision
Term
MAC address
Definition
Media access control address. A 48 bit physical associated with every network interface. An example MAC address 00-C0-F0-27-64-E2
Term
Slot time
Definition
The time required to transmit 512 bits of data
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