problem1. Describe the contents of the Cost Assessment.

problem2. Several Documents are needed for Configuration Management. State three of them, and describe their importance.

problem3. Given that the Mean Time to Repair of a typical network device takes about 2 hours. The Mean Time to diagnose and Respond to an incident is proportional. Find out how long it would take the diagnose the problem, if the Mean Time To Fix the device represents 1/8 of the total time taken.

problem4. Describe how Network Management is performed using SNMP. Exemplify using a suitable diagram.

problem5. Describe the Usage of Digital Signature in the encryption process of sending    data.

problem6. Give two reasons why the building-block approach is favoured to the traditional network design approach.

problem7. With reference to network monitoring parameters, distinguish between:

i) Physical network statistics

ii) Logical network statistics

problem8. Two important system performance parameters are: Availability and Reliability.

i) describe the difference between those two parameters.

ii) find out the MTTR to the nearest hour of a system with an availability of 99% with an average of 2 failures per year.

iii) find out the MTBF to the nearest hour if the reliability of a system  needs to be 99.99% over 30 days.

problem9. Give three steps that can be taken to reduce network management costs.

problem10. Using all of 6 physical disks, sketch the possible arrays that you can implement in RAID 0+1 and showing how stripes A, B, C, D, E and F are written to the arrays. Give the total effective size of each array if each disk has a size of 20 GB.