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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.
Around the globe the bank controlled Co-ops (Visa, MasterCard, Discover, and American Express) have rolled out millions of smart cards under the EMV (Europay, MasterCard, VISA) sta
Question: (a) Distinguish between Steganograhy and Cryptography. (b) "Playfair cipher is more secure than Monoalphabetic cipher." Justify this statement. (c) Various ap
QUESTION (a) Illustrate the term file carving. (b) What are the basic three main techniques for image steganography? (c) Distinguish between vector graphics and raster
Question requires you to develop firewall rules based on a fictitious organisation. Scenario: You work for a security-conscious company, xC-Cure, who develop encryption te
Question: (a) Data on four variables are stored in a file called file1.dat. The first line of the file is the variable names f, x, y and z. Give the R commands to (i) read t
Mapping between a hardware address and a protocol address is known Address Resolution. A router or host uses address resolution when it requires to transmit a packet to another dev
hi have a look and tell me if u can do it. if u can do Q1then i will allow u to do Q2
REASON FOR MULTIPLE TOPOLOGIES Every topology has disadvantages and advantages, which are described below: IN A RING: It is simple to coordinate access to other dev
Question: (a) What are the various options to mitigate risks in an Information Security Management System (ISMS)? For each option specify an instance where it can be used.
QUESTION (a) Mention two attitudes of a carer towards an inspector that could lead to negative outcomes (b) Give two performance indicators of Early Childhood Education that
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