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Question:
a) Give two reasons why the building-block approach is favoured to the traditional network design approach.
b) With reference to network monitoring parameters, distinguish between:
i) Logical network statisticsii) Physical network statistics
c) Two important system performance parameters are: Availability and Reliability.
i) Describe the difference between those two parameters.
ii) Determine the MTTR to the nearest hour of a system with an availability of 99% with an average of 2 failures per year.
iii) Evaluate the MTBF to the nearest hour if the reliability of a system needs to be 99.99% over 30 days.
d) Give three steps that will be taken to reduce network management costs.
e) Using all of 6 physical disks, sketch the possible arrays that you will implement in RAID 0+1 and showing how stripes A, B, C, D, E and F are written to the arrays. Provide the total effective size of each array if each disk has a size of 20 GB.
Explain TCP congestion control.
In the early days when there were some dozen computers machine on the network, it was done individually but now as we have looked that there are millions of computers on the intern
TCP and UDP End-to-end delivery application is connection less. The basic function of connectionless service are as given: It adds extension of LAN abstraction. It has simp
I have an assignment of Computer Security to submit. Will you guys help me making my assignment???
BALANCING SECURITY AND ACCESS Even with best planning and implementation, it is impossible to obtain perfect security, that is, it is a process, not an absolute. Security should
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ADDRESS RESOLUTION WITH MESSAGE EXCHANGE An alternative to local calculation is a distributed function. A computer that requires to find an address transmits a message across
Question (a) In relation to a TCP segment structure, provide the fields responsible for: i. Connection Management ii. Flow Control iii. Error Control iv. Reliable, in-order
Question 1 Explain any two types of security policies Question 2 What is security attack? Explain with examples Question 3 Explain different characteristics that i
Discuss how developers should apply the following countermeasures to improve the security of their code:
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