ict2 unit 1

ring topology

A Ring Topology connects all devices in a circle with each device having exactly two neighbors.

mesh topology

A mesh topology connects each network device to many other network devices. Data traveling on a mesh network can take any of several possible paths from its source to its destination. These redundant data pathways make a mesh network very robust. Even if several links fail, data can follow alternative functioning links to reach its destination. This is an advantage over networks arranged in a star topology.

linear bus

Linear Bus Topology uses a common backbone cable to connect all network devices. The backbone cable functions as a shared communication link, which carries network data. The backbone cable stops at each end of the network with a special device called a "terminator."

ring topology advantages

Minimizes the number of cables needed.

star topology

A star topology is designed with each node (file server, workstation and peripheral) connected directly to a central network hub.

tree topology

A tree topology combines characteristics of linear bus and star topologies. It consists of groups of star-configured workstations connected to a linear bus backbone cable. Tree topologies allow for the expansion of an existing network, and enable schools and businesses to configure a network to meet their needs

Linear Bus Topology advantages

Easy to connect a computer or peripheral to linear bus. Requires less cable length than a star topology.

star topology advantages

Easy to install and wire. No disruptions to the network when connecting or removing devices. Easy to detect faults and to remove parts.

linear bus topology disadvantages

Entire network shuts down if there is a break in the main cable. Terminators are required at both ends of the backbone cable. Difficult to identify the problem if the entire network shuts down. Not meant to be a stand-alone solution in a large building.

ring topology disadvantages

Failure of one device can take down the entire network.

tree topology disadvantages

Overall length of each segment is limited by the type of cabling used. If the backbone line breaks, the entire segment goes down. More difficult to configure and wire than other topologies.

star topology disadvantages

Requires more cable length than a linear topology. If the hub fails, nodes attached are disabled. More expensive than a linear bus because of the cost of the hub.

tree topology advantages

Tree Topologies offer excellent flexibility for expansion for example, a single link to the backbone cable can add an entire group of star-configured devices. Point-to-point wiring for individual segments.

mesh topology disadvantages

difficult to implement difficult to administer difficult to troubleshoot expensive

mesh topology advantages

extremely fault tolerant

main types of network topologies

star, ring, linear bus, tree, mesh