1. An interconected collection of computers
1.1. LAN- local area network-together in the same building
1.2. WAN- Wide area network- computers that area long distance apart example different countries.
1.3. MAN -Metropolis area network- computers that are conected within cities.
2. topology- The arrangement of computers in a network.
2.1. RING TOPOLOGY
2.1.1. Advantage- Every computer is connected to one another and therefore each computer can receive data easily. Under heavy load this network topology performs well. Plus you generally do not need a network server.
2.1.2. Disadvantage- if one computer fails, the entire workstation will fail. f anything is supposed to be changed, the entire network will have to be changed. Plus this is much slower that Ethernet network
2.2. BUS TOPLOGY
2.2.1. Advantage- if one computer fails the network does not fail. it is very simole and quack to set up.
2.2.2. Disadvantage-limited cable length. If there is a problem with the main cable then entire network fails. Maintenance cost is high in the long run
2.3. STAR TOPLOLOGY
2.3.1. Advantage- If one computer breaks down, it does not affect the other computers.
2.3.2. Disadvantage- expensive, Dependent on the main computer
2.4. HIERARCHICAL TOPOLOGY
2.4.1. Advantage- easy to share information. each computer is connected to each other.
2.4.2. Disadvantage- if the top computer fails, then the entire network fails.