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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.
Question : Wi-Fi protected access (WPA) was specified by the Wi-Fi alliance with the primary aim of enhancing the security of existing 802.11 networks. However, WPA was only a
Asymmetric Encryption Asymmetric encryption method makes use of two different but related keys and either key can be used to encrypt or decrypt the message. This method is freque
Evaluations, Assessment, and Maintenance of Risk Controls When the control strategy has been implemented, it should be monitored and measured on an ongoing basis to determine ef
The Cost Benefit Analysis (CBA) Formula CBA determines that whether the control alternative being evaluated is worth cost incurred to control vulnerability or not. CBA easily ca
explaain it?
Internet Protocol IP Gives computer-to-computer communication. Host and receiver addresses are computers. This is also known machine-to-machine communication.
IPV6 NEXT HEADER It is given in the figure below:
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
Network security has become much more complex than ever before. New types and sources of network security threats, always-on high-speed Internet connections, wireless networking, a
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
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