Advantages And Disadvantages Between Laboratory And Universities

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Upon my investigation of various media transmissions that may be used between the labs and universities I have examined the three various cable types and the three wireless types, stating their advantages and disadvantages and if they would be suitable for the universities and labs.
Twisted pair:
Most commonly used for PCs on a Local Area Network, it has advantages of being cheap to install and it is easy to terminate however its disadvantages are that it is limited in distances (100m) but enough distance to connect the computers in the labs. Another disadvantage is that it suffers from interferences. It also has not got a great speed of bandwidth but sufficient enough to connect lab computers. The twisting of the pair is used to reduce interference
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Assuming the labs have 5 computers in each lab and a printer device, I have decided to use a star for the network topology within each lab of university 1. Each computer will have a dedicated point-to-point link to the central hub device in the lab so no direct traffic between devices. Compared to the bus topology, the Star gives better performance.
“It is easy to connect and remove new nodes or devices without effecting the rest of the network” (Sparrow, P, 2016).
Between Labs (University 1):
To connect the three identical laboratories in university 1, I have researched the topologies and have decided to use the Bus topology because it is known to work well in small networks and can be of the easiest topology for connecting computers as it requires less cable length than the STAR topology. The bus topology unlike the STAR, MESH and RING, is a multipoint configuration. It uses one long cable as a backbone to link all of the devices in the network by way of connecting notes to the cable by drop lines and taps.

Within Labs & Between Labs (University
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Benefits:
• If a link fails, only that link is effected
• Ideal for small physical regions i.e. university campus
• Can add or remove workstations from each star network
• Less expensive than mesh as each device only needs one link and I/O port
• Easy to install and configure
Limitations:
• In a tree network, a failure to one cable will isolate the workstation that links to the switch of the STAR, but only that workstation will be down. All other workstations will function normally, except when trying to communicate with the workstation that is down from the tree network.
• If the central system goes down, the entire network that relies on it will suffer in performance or even complete failure.

Question 5)

Interconnecting Devices
There are up to six main categories of interconnecting devices used in a computer network such as
• Repeaters and active hubs
• Passive hubs
• Bridges / two layer switches
• Routers / three layer
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