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In a mesh topology, the nodes are connected directly all other nodes. Each node can transmit, receive and routing data. This topology connects devices with multiple paths so redundancies exist. This topology is used mostly for wireless network. There are two types of mesh topology. They are fully mesh and partial mesh.

Advantage

It is reliable.

No gateway computer so nodes can create their own paths.

Disadvantage

This topology can cause redundancy of many of the network connections.

Need very much cable than the LAN topologies.

Network Media

There are four basic types of network cables. They are

Fiber Optic cable

Coaxial cable

Unshielded Twisted pair cable (UTP)

Shielded twisted pair Cable (STP)

Fiber Optic Cable

Fiber Optic Cable is a technology uses glass (or plastic) threads (fibers) to transmit data. It consists of a bundle of glass threads, each of which is capable of transmitting messages modulated onto light waves.

The advantages of fiber optic cable are it has high greater bandwidth so they can be used over greater distance than copper cable. Fiber optic cables are thinner and lighter than metal cable so it reduce size and weight and that it keep environmental protection and overall system economy.

The disadvantage of fiber optic cable is that the cable is expensive to install. In addition, they are more fragile than wire and are difficult to splice.

Coaxial Cable

The coaxial cable is transmission line for high-frequency signals and carries both video and audio singals. The coaxial cable is used by Satellite Company. It also used by cable TV between the community antenna and user homes and business. There are two types of coaxial cables. They are thin coaxial and thick coaxial.

Advantages of Coaxial Cable

It is highly resistant to signal interference

it can support greater cable lengths between network devices than twisted pair cable.

Disadvantages of Coaxial Cable

Great noise.

High installation cost.

More expensive than twisted pair cable.

It is difficult to install.

Unshielded Twisted pair cable

Unshielded twisted pair cable is composed of pair of wires. Unshielded twisted pair cable (UTP) is used in a variety of networks. UTP computer networking and used to connect devices in a Local area network. it may react to radio or electrical interference.

Advantages of unshielded twisted pair cable

It is easy to install.

It is low cost of materials.

It is less expensive than other types of networking media.

It costs less per foot than any other type of LAN cabling.

Disadvantages of unshielded twisted pair cable

No additional shielding to protect the medium from noise.

It may react to radio or electrical interference.

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