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Problem
a) Distributed network architecture is whereby services are executed and distributed among various computers. Give two advantages and two disadvantages of the distributed architecture.
b) With the use of diagram(s), illustrate how the star topology is different to the bus topology.
c) The figure below shows a typical firewall connection. Why the use of a firewall is important.
d) Explain in details the importance of encryption and how encryption and decryption work. Use a diagram to illustrate your answer.
The data bus is Bi-directional because the similar bus is used for transfer of data among Micro Processor and memory or input / output devices in both the direction.
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Q Convert the following DECIMAL numbers into HEXADECIMAL, double check by converting the result HEXADECIMAL to DECIMAL. a) 24 b) 547.56
Trunks are the lines that run between (A) Subscribers and exchange (B) Switching system and power plant (C) Local area network (D) Switching stations Ans:
Explain Asymmetric cryptographyand its components. Asymmetric or public-key cryptography be different from conventional cryptography in which key material is bound to a single
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Automatic Stock Control System in a Supermarket - Bar codes are associated to all goods/items sold by the supermarket as a means of identification - Every bar code is asso
A two stage non-blocking network requires twice the number of switching elements as the single stage non-blocking network. It is true or false. Ans: It is true that a two st
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