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CLASSIFICATION OF NETWORK (METROPOLITAN AREA NETWORK (Example (…
CLASSIFICATION OF NETWORK
LOCAL AREA NETWORK
A network that connects computers and devuces in alimited geographical area
A wireless LAN (WLAN) is a LAN that uses no physical wires
COVERAGE
Confined to a computer lab in school, single room, building or group of buildings
Example of Transmission Media
-Radio waves
-Telephone lines
ADVANTAGE
-Easy to share data (homework,
pictures)
-Easy to share devices (printers, scanners,
external devices)
-Cost of LAN setup is low
DISADVANTAGE
-Security- each computer and devices become another point of
entry for undesirable
If all computers running at once, can reduce speed for each. Area covered is limited
-Power- a good LAN is required to be 'ON' all the times
WIDE AREA NETWORK
A wide area network (WAN) is a network that covers a large geographic area (such as a city, country, or the world) using a communications channel that combines many types of media such as telephone lines, cables, and radio waves
ADVANTAGE
-Ease of communications
-Increase efficiency
-Lowered costs
DISADVANTAGE
-Maintenance problems. Large enterpride will dedicate personnel to maintaning their WAN
-Training costs
-Security problems
METROPOLITAN AREA NETWORK
A high speed network that connectslocal area networks in a metropoiitan area such as a city or town and handles the bulk of communications activity across that region
Can cover several bulidings or even an entire city (metropolis). The geograhical area of the MAN is
large
r than WAN
Example of Transmission Media
-Fiber Optic Cable
Example
-Surveillance system
-Traffic Light Monitoring System
-Cable Network TV
ADVANTAGES
-All the computers-owning resident of the area equal ability to go on line
-Efficiency and shared access
DISADVANTAGES
-
-It can only be costly (hardware,
software, etc)
-As the network consists of many computers over the
span of a city, the connection can lag or become quite
slow
-Security Problems