QUESTION

a) "Two of the key attributes of an enterprise network is that it have to be multi-platform and multisite."

Decribe what you understand by this statement.

b) A logical network diagram is the deliverable at the end of the Needs Analysis stage in network planning. Illustrate the different phases in this stage.

c) Describe the following in relation to redundancy:
i) RAID Level 0+1
ii) Differential backup
iii) Level 3 UPS

d) In terms of performance, consider a network with an MTBF of 3000 Hours and MTTR of 2 Hours:

i) Evaluate the percentage availability of the network.
ii) Evaluate the percentage reliability of such a network over a one-year period.
iii) Determine the average throughput between two hosts given that the RTT for a 32 bytes ICMP request-reply is 1 millisecond and that for a 1500 bytes ICMP request-reply is 6 milliseconds.