The network shown below connects two buildings using a series of routers and fibre links. Assuming all routers are perfectly reliable, find the total reliability of the network if the link availabilities are as follows: • L1 = L2 = 99% • L3 = L4 = 97.5% • L5 = 99%

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A: Here is the explanation of the above problem. See below steps.

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Network transmission cabling

A network is a collection of devices connected by communication links. A device can be a computer or any instrument capable of sending and receiving data or information formed by other nodes toward the network. A channel that connects people or things is known as a network. It sends the data from one place to another. It is the basic concept of a computer, network, and data communications.