Basic Computer Network

TOPOLOGI� Topologi fisik

Topologi bus

Topologi ring

Topologi star

Logika Topologika Thin Ethernet network (physical

bus, logical bus)

10Base-T Ethernet network (physical star, logical bus)

Tipe Komunikasi

� Peer-to-Peer � Client - Server

Area Base of Computer

Network

� LAN

� MAN

� WAN

Types of Computer Networks� Local Area Networks (LANs)

� within a building or campus

� usually based on broadcast channels

� often connected via gateways to wide area networks

� Examples: (Fast)Ethernet, FDDI rings, Myrinet, ATM LANs

� Bit rates: 10-1000 Mbps

Cable Computer(b)(a)

Computer

Type of Computer Networks

� Metropolitan Area Networks (MANs)

� covers area of a city

� usually based on LAN technology

� Examples: DQDB (Distributed Queue Dual Bus), cable television networks

Type of Computer Networks� Wide Area (Long Haul) Networks

� may cover country, continent

� Most communication links are point-to-point

� usually irregular topology

� usually organized as a “subnet” to which hostshave access.

� switching elements are generically referred to as routers