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QUESTION
(a) Which PKI (Public Key Infrastructure) model is typically favored by business organization?
(b) Give one possible use of the "extensions" field of an X.509 certificate
(c) Users in a PKI can obtain digital certificates of users they want to communicate with. Which protocol is typically used to interact with the directory server to obtain certificate(s)?
(d) Calculate the RSA public and private keys given the values of p and q as follows: p = 17; q = 11. Show details of workings. Choose e = 7
(e) What is meant by Certificate Revocation? When would a certificate have to be revoked?
(f) Alice and Bob are communicating
IPv6 ADDRESSING IPv6 has 128-bit addresses. A 128-bit address adds network prefix and host suffix. An benefit of IPv6 addressing is that there is address classes i.e. prefix/s
What is one-time pad for encryption? Describe how it offers both Confusion and Diffusion. Using the letter encoding discussed in class (along with one-time
What is the use of it
Bridges perform both in the data link layers and physical of LANs of same kind. They split a bigger network in to smaller segments. They have logic that accept them to store the
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
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on LAN,where are IP datagrams transported?
Problem 1: a) One of the limitations of file processing systems is data inconsistency. Briefly explain with the help of an example what do you understand by this phrase. b)
Information System Security 1. Write about: a. Potential Risks to Information Systems b. Factors to be addressed for making information systems more secure 2. Write about t
QUESTION (a) (i) Describe Phishing attacks. (ii) Distinguish between Phishing and Spear Phishing attacks. (b) Describe two instances where an attacker sniffing on a netwo
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