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(a) Using Fermat's theorem, find 3201 mod 11.
(b) Explain how the Diffie-Hellman key agreement protocol works and what its purpose and main properties are.
Consider a Diffie-Hellman scheme with a common prime q = 11 and a primitive root α = 2.
(i) If user A has public key YA = 9, what is A's private key XA?
(ii) If user B has public key YB = 3, what is the shared secret key K, shared with A?
(c) Briefly explain the Output Feedback (OFB) mode of operation stating its advantages, disadvantages and uses.
Question 1: (a) (i) Radio waves are subject to several propagation problems. Name any three of them. (ii) A Wi-Fi receiver requires a signal power of 50mW to operate correc
Problem (a) Describe RSA algorithm with an example. (b) Answer the following RSA encryption, given the values of the primes are: p = 17, q = 11 and choosing e = 7. (c)
In BUS topology every computer is directly connected to primary network cable in a single way. Bus networks are the easiest way to connect multiple users, but can have problems
Hashing is the transformation of a string of characters into a generally shorter fixed-length key or a value that presents the original string. Hashing is used to index and retri
Transposition technique
QUESTION A small ISP requests your help. The technicians report that they have had no downstream access to the Internet. They believe the problem lies with their access provide
Detect each visit to www.google.com that is made by the machine. o Send an alert when an activity relating to network chat is detected. o Send an alert when an attempt is made for
(a) Figure is a representation of a TCP header. For each of the fields lettered from A to G, state the name of the field and provide a brief explanation for the function of each fi
Question: Quality management standards are seen as a major pillar supporting the drive for continuous quality improvement through TQM. (a) What do you meant by the term ‘Qua
Ask question #MHow Ethical are Major Internet Companies?
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