Network design approach, Computer Network Security

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Problem

a) Give three reasons why traditional Network Design approach is less appropriate for many of today's networks?

b) The network requires of users are organized into mandatory requirements, desirable needs, and wish list requirements. What do you meant by these requirements?

c) After having prepared the cost assessment for a Network Design project, you have to sell this proposal to your Management. On what must you make emphasis to receive a favourable reply?

d)  Show, by means of a diagram, a sample of a Logical Network Design that has of a building of four floors. There is one department on the second floor with high-end computers that transmit high traffic, and the other departments have normal traffic.

e)  Two important system performance parameters are: Reliability and Availability.

Determine the availability of a system if the MTBF is 3000 hours and the MTTR is 24 Hours.

Determine the  reliability  of a system with a MTBF  of 3000 hours over a  one year  period. Evaluate reliability value mean?

f) Given four disks, sketch the possible arrays that you will implement in RAID 0+1, RAID 5 and RAID 10  and showing how stripes A, B and C are written to the arrays. Provide the effective size of each array if each disk has a size of 160 GB.


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