High availability and fault tolerance are two of the most critical technology areas in the networking world and they impact all the other technologies presented in a network.
High availability is often a factor taken into consideration when designing and implementing end-to-end solutions. This ensures redundancy for the network services and for the end-users and is accomplished by making sure that the network devices are reliable and fault tolerant.
You should design some level of high availability solutions into any network module that you want to propose. For example, the Access Layer can have multiple ways of . . .
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