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Question:
a) Explain what you understand by the term brute force attack, giving an example of such an attack
b) Briefly outline the concept of Caesar cipher and identify any associated weaknesses.
c) Explain what you understand by encryption/decryption using a suitable illustration to support your answer and state on what two things the security of encrypted data is entirely dependent.
d) Differentiate between the symmetric and the asymmetric encryption system providing illustrations where necessary to support your answer.
e) The following technologies can be applied to an e-banking infrastructure to ensure security. Briefly explain the role of each one of them.
(i) SSL (Secure Socket Layer) (ii) Digital Certificate
The project will be involving a design and a report of which explain the simulation and how it functions. The aim of the project is to help the administrators and staff at the war
Question: Spreadsheet packages are widely used in Business. a) Explain why spreadsheets are so useful. b) Spreadsheet files are sometimes saved for use by other software
Dynamic Packet Filtering Dynamic Packet Filtering is also referred to as stateful firewalling. Here the firewall maintains the status of connections as well. When a connection
Problem: (a) What is the minimum length of a password that could be considered to be "strong" in the context of today's computing power? (b) The security of a PIN system,
Write Pseudocode for the password guessing algorithm: Consider the following authentication protocol: Client Transmission Host
QUESTION: (a) Ethernet has grown in popularity in the recent years and is now used in LANs. Give three reasons for the success behind Ethernet. (b) Ethernet uses the CSMA/CD
Question 1 a) Explain how CSMA/CD works. b) Describe the term "exponential back-off". c) Describe the differences between "circuit switching" and "packet switching". d) Th
What is information security Information security protects information (and facilities and systems which store, use and transmit it) from a broad range of threats, in order to p
In Star topology all computers are connected using a central device known as hub. Star networks are one of the most general computer network topologies. In its simplest way, a
QUESTION (a) Briefly explain the contents of the Needs Analysis, which is step in the process of network design. (b) Describe on the three ways of improving the performan
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