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Question (a) Consider that you enter the subsequent URL in the address bar of a popular web client and that both the server and client accepts HTTP version 1.1.
i. What can be the initial request made by the client?
ii. Describe how HTTP version 1.1 allows 'surfing' experience to be greatly improved.
iii. Provide a sample HTTP request message with at least 4 main header lines that is sent by the web client.
iv. Consider that the web resource is actually found on the server, give at least 3 header lines that you can expect in the sample response HTTP message.
Question (b) Integrity and Authentication are two important network security services.
i. Describe what you understand by authentication.
ii. Give one mechanism that will be used to enforce both authentication and data integrity and illustrate briefly how it works.
iii. Explain one mechanism that you can use to ensure data integrity alone during transmission.
INTRODUCTION TO RISK MANAGEMENT Risk management is the procedure of identifying and controlling risks facing an organization. Risk management is the discipline which is employed
(a) Describe RSA encryption. (b) For an RSA encryption the values of the primes are: p=29, q=31. select e=11, evaluate the public and private keys. (c) How can RSA be used fo
PARITY BIT: A parity bit is an extra bit transmitted with data item select to give the resulting bit odd or even parity. For example an even parity data packet 10100001 has p
UDP DATAGRAM FORMAT: It is given in the figure below:
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Question: (a) What is the use of digital certificate? (b) What is meant by a hierarchical trust model in a Public Key Infrastructure? How does the Pretty Good Privacy (PG
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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,
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