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11 Cards in this Set
- Front
- Back
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Local Area Network (LAN)
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covers a limited geographic distance, such as an office, office building, or a group of buildings within close proximity.
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WIDE AREA NETWORK (WAN)
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covers large geographic distances, such as a state, a country, or even the entire world.
The Internet is a WAN. A WAN is often a collection of connected LANs. |
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CLIENT/SERVER NETWORK
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is a network that contains one or more host computers (called “servers”) that provide some type of service to the other computers (called “clients”).
Client/server networks are the emerging blueprint for all networks today. |
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NETWORK TOPOLOGY
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refers to the physical arrangement of computers in a network. Network topologies include bus, ring, and star
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BUS TOPOLOGY
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all computers are connected to a single cable over which all communications travel.
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STAR TOPOLOGY
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- has a central hub from which all other computers radiate.
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Network Server
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A computer system that serves as a central repository of data and programs shared by users in a network.
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Wired
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TWISTED-PAIR CABLE - two insulated copper wires twisted in a spiral.
FIBER OPTIC CABLE - uses a very thin glass or plastic fiber through which pulses of light travel. |
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Wireless Media
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INFRARED uses a red light (below the visibility of the human eye) to transmit information (short distance).
TERRESTRIAL MICROWAVES transmit high-speed radio signals in a path between relay stations (dish-shaped antenna) (medium distance). SATELLITES are basically microwave transmission systems in space (long distance). |
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PEER-TO-PEER NETWORK
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treats all computers equally and is used primarily in small networks.
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Bandwith
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The capacity for information flow is called It is usually measured in bits/second.
Twisted Wire 500 BPS to 10 MBPS Microwave 256 KBPS to 100 MBPS Satellite 246 KBPS to 100 MBPS Fiber-optic 500 KBPS to 10 GBPS |
