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Computer networking from Wan to Lan
Chapter 1
26
Computer Networking
Undergraduate 3
09/14/2010

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Term
Application Programming Interface
Definition
the methods which defines how an application program interfaces directly with operating system to perform all network related activities.
Term
Baseband System
Definition
a communication system in which a single carrier is used to exchange information. Ethernet is a baseband system.
Term
Bit Rate
Definition
The number of bits transmitted in one second
Term
Bit Time
Definition
The time required to transmit a single bit
Term
Broadband System
Definition
A communication system in which multiple carrier signals are used to exchange information. cable telivision is an example of a broadband system
Term
Broadcasting
Definition
Transmitting a frame that is meant to be received by all stations on a network, not one specific station.
Term
Bus Network
Definition
A network where all nodes are share the same media
Term
Collision
Definition
Two or more stations transmitting at the same time within the same collision domain.
Term
Encoding
Definition
A method of converting digital data into different representation for transmission.
Term
Ethernet
Definition
LAN technology employing CSMA/CD to share access to the available bandwidth.
Term
Frame
Definition
Structure used to transport data over a network. Contains source and destination addresses, data, and a 32 bit frame check sequence.
Term
Fully connected network
Definition
this network contains a link from each node to every other node.
Term
Internet
Definition
A global collection of computer networks that allows any station to communicate with any other station.
Term
LAN
Definition
Local area network. A collection of computers in a small geographical area
Term
MAN
Definition
Metropolitan area network. A network covering a metropolitan geographical area like a town or a city.
Term
Manchester encoding
Definition
Technique used to encode 0s and 1s such that a signal transmission occurs during every bit time. A 0 is represented by a low-to-high transition, and a 1 from high-to-low transition.
Term
NIC
Definition
Network interface card. the expansion card added to a system to provide network functionality
Term
Protocol
Definition
The rules fro exchanging information between two objects(network devices, application programs)
Term
Ring Network
Definition
A network in which all nodes are connected in a circular ring(each node has exactly to connections)
Term
Segment
Definition
a portion of a network that may or may not contain nodes. Ethernet allows up to five segments to be connected in a series.
Term
Star Network
Definition
A network in which all nodes connect to one or more hubs.
Term
Tap
Definition
Used to make a connection with a coaxial cable.
Term
Token Ring Network
Definition
an IEEE 802.5 standard LAN technology in which information circulates in a closed ring of stations.
Term
Transceiver
Definition
A device capable of transmitting and receiving data.
Term
WAN
Definition
Wide area network. A collection of LANs connected via routers over a large geographical area.
Term
Wireless Network
Definition
An IEEE 802.11 standard network using high frequency radio signals infra red lasers instead of wires. Typically multiple mobile stations communicate with a single base station.
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