Network Topologies

Choose at least Five (5) different network topologies. Provide the following:

• Description
• Diagram
• 2 advantages & 2 disadvantages 

Network Topologies

• It is an arrangement which computer systems or network devices is connected to each other.
• There are two (2) types of topologies, physical and logical

Logical Topologies:

• It is how devices appear to be connected to the user

Physical Topologies:

• It is how they are interconnected with wires and cables

Different Network Topologies:

1. Point-to-point topology
2. Bus topology
3. Star topology
4. Ring topology
5. Mesh topology
6. Tree topology

Point-to-point topology

• It is where two (2) devices is connected
• It is also where two (2) hosts (computer and switch) is connected back to back by using a single piece of cable. 

Bus topology

• It is when all devices shares a single communication line or cable
• In bus topology, there will have a problem while the hosts is sending the data at the same time
• If one of the connection or communication line is fail, then it can make all other devices to stop communicating. 

Star topology

• It is connected to a central device that is known as hub.
• Many devices are connected to only one (1) hub or switch. 
• The problem is when only one (1) switch, if the switch is broken then there is no connection between the hosts. 

Ring topology

• Each host machine connects to two other machines creating a circular network structure.
• The advantages: 

1. If one (1) device is fail, then there is another way to send the message
2. Sending of the message is faster because the cable is only use by the centre
3. If you want to connect one (1) host (computer), it is easy to find the cable and add another one. 

• The disadvantages:

1. Sending documents by using token ring but if the token ring is full, then it must wait or queue up.
2. The message that is being send may be read by other devices

Mesh topology

• The host is connected to one or multiple hosts
• (Advantages) There are many ways to send the message
• (Advantages) Fast flow because there are more cables is being used.
• (Disadvantage) It is very expensive to set up 
• In mesh topology, there are many point-to-point connection
• There comes in full or partial (types of mesh)

Full Mesh

• All hosts have point-to-point connection to every other host in the network
• It provides more reliable network

Partial Mesh

• Not all host are connected to each other.

Tree topology

• Also known as hierarchical topology
• Most common form of network topology use
• (Advantage) It is fast
• (Advantage) Suitable for office use
• (Disadvantage) It is expensive

References:

Anon

Mplsnet.files.wordpress.com. (2018). [online] Available at: https://mplsnet.files.wordpress.com/2014/06/p2p1.png [Accessed 18 Apr. 2018].

Website

Anon

3.bp.blogspot.com. (2018). [online] Available at: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBoC_gDlNlY4UO9-9WnoW9AmQD274y4CzGB6rdQyqtBUM7niFqvIqP_vcxVeRraofAki2WQqK8O1akasjIRbhCVBepTBA-0jhLmB24Td6rYWxOyFYS7hga96iK2sPrbLZ_BAtJtQrRUvqw/s1600/Bus+topology.JPG [Accessed 18 Apr. 2018].

Anon

Solarexinstitute.com.ng. (2018). [online] Available at: https://www.solarexinstitute.com.ng/wp-content/uploads/2018/02/lW0Xvyc.jpg [Accessed 18 Apr. 2018].

Anon

Fossbytes.com. (2018). [online] Available at: http://fossbytes.com/wp-content/uploads/2016/03/Ring-topology.jpg [Accessed 18 Apr. 2018].

Anon

Networking-basics.net. (2018). [online] Available at: http://www.networking-basics.net/wp-content/uploads/2014/09/Mesh-Topology-282x300.jpg [Accessed 18 Apr. 2018].

Anon

I0.wp.com. (2018). [online] Available at: https://i0.wp.com/jharaphula.com/wp-content/uploads/2016/05/tree-topology.jpg [Accessed 18 Apr. 2018].