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Question:
(a) Distinguish between Steganograhy and Cryptography.
(b) "Playfair cipher is more secure than Monoalphabetic cipher." Justify this statement.
(c) Various applications compress data before sending it across a network. If compression and encryption are both to be applied to a document before it is transmitted, does it matter which is done first? Why?
(d) A compressed data file has many of the attributes of an encrypted data file. In what way are they similar? Is compression a form of encryption, or could it be used as such? Why, or why not?
(e) Describe Triple DES. Is it secure? Why is it not the standard replacement for DES?
(f) Give two examples of passive attacks.
Question: a) Explain what the following intermediate systems are and how they work? i. Repeater ii. Bridge b) A service is formally specified by a set of primitives (op
LOCALITY OF REFERENCE PRINCIPLE: Principle of "Locality of Reference" use to predict computer interaction patterns. There are two patterns shown as follows: a) Spatial loca
Question: (a) Prove that every positive integer n can be factorized into a product of prime powers. (b) State the Fermat-Euler theorem as needed in the RSA system. (c) Us
FRAGMENTATION One method is to limit datagram size to smallest MTU of any server. IP needs fragmentation i.e. datagrams can be divided into pieces to fit in network with small
The key concepts and frameworks covered in modules 1-4 are particularly relevant for this assignment. Assignment 2 relates to the specific course learning objectives 1, 2 and 3:
Categories of Controls Controlling risk through mitigation, avoidance or transference is accomplished by implementing controls. There are 4 effective approaches to select the co
Question: (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,
(a) What are the different architectures for wireless networks? (b) Explain how WEP authentication and encryption works, describe the vulnerability. (c) In what ways are secu
Why is WEP-based authentication pointless?
Question: (a) Give 2 benefits of using IPsec. (b) IPSec uses two protocol for security: Authentication Header protocol (AH) and the Encapsulated Security Header Protocol (
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