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Question 1
a) Provide three advantages of using optical fiber. b) Distinguish between "Direct Sequence Modulation" and "Frequency Hopping" c) Decribe the purpose of using "Straight-Through" cable and "Cross-over" cable. d) Briefly explain the role of the "session and transport layer" of the OSI.
Question 2
a) The IP gives a number of core functions and associated procedures to carry out the several harmonizing functions. What are three main functions of IP, provide a brief description about each function. b) i) Describe what Network Address Translation (NAT) is? ii) Why is NAT used? c) Give three advantages and three disadvantages of NAT. d) Which TCP/IP utility will be used to evaluate the path taken by messages from workstation to a destination?
"Using the CNSS Model, examine each of the cells and write a brief statement on how you would address the components respesented in that cell"
Issue-Specific Security Policy (ISSP) The ISSP addresses specific areas of technology, needs frequent updates and having statement on organization’s position on a particular iss
Question (a) For the bit stream 010011, show the waveforms for each of the code indicated. Consider that the signal level for NRZ-L for mark is positive; the signal level for t
UDP COMMUNICATION SEMANTICS: UDP needs IP for all delivery, that is, similar best effort delivery as IP. To use UDP, an application have to either be immune to the causes or
Question (a) A CRC is constructed to generate a 4-bit FCS for an 11-bit message. The divisor polynomial is X 4 + X 3 + 1 (i) Encode the data bit sequence 00111011001 using po
Question: (a) Which type of attacker represents the most likely and most damaging risk to your network? (b) What is the basic reason that social engineering attacks succeed?
Question 1: (a) With the help of a diagram show the basic structure of a computer system. (b) Explain as fully as you can each of the parts mentioned above. (c) What are
DIRECT INDEXING It is less usually known method. It is possible only is cases where protocols address are given from a compact range. In the diagram below an example of direct
CarALouer provides rental of cars to its customer on a regional basis i.e. a car is attached to a regional home-base which also houses a regional office of the company. Each regi
the meaning Digital Signatures
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