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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
WIRELESS SECURITY TOOLS An organization which spends its time securing wired network and leaves wireless networks to operate in any manner is opening itself up for security brea
Consider a computer system with three users: Alice, Bob and Cindy. Alice owns the file alicerc, and Bob and Cindy can read it. Cindy can read and write the file bobrc, which Bob ow
(a) Using the extended Euclidean algorithm, find the multiplicative inverse of 504 mod 67. (b) Decrypt the following ciphertext, which has been encrypted using Caesar cipher:
QUESTION a) Consider the speed of propagation of an electrical signal is same to 2x10 8 m/s, evaluate the ratio of the propagation delay to the transmit time for the given typ
Assume that a security model is needed for the protection of information in your class. Using the CNSS model, examine each of the cells and write a brief statement on how you would
Question: (a) Distinguish between Steganograhy and Cryptography. (b) "Playfair cipher is more secure than Monoalphabetic cipher." Justify this statement. (c) Various ap
implementing password policy in organisation
Five years ago, Calgary Kids' Cloth Ltd was just a small retail store in downtown Calgary. The company started their own factory in SE Calgary to produce outdoor clothes for kids.
Problem: (a) Assume that a new application layer protocol is developed for video conferencing application. Which transport layer protocol, between TCP and UDP, will you u
Problem 1: Discuss how TWO of the following gurus have contributed to the Quality Movement, highlighting the major points of their philosophies: (a) Edward Deming (b) Jose
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