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QUESTION
(a) Describe the two possible configurations for 3DES
(b) What is the main disadvantage of 3DES?
(c) Why are most modern symmetric algorithm block ciphers?
(d) Explain four weaknesses of symmetric cryptography
(e) Assume that Alice have to send bulk data to a remote user Bob. Describe how Alice would use both symmetric and asymmetric cryptography to achieve both security and efficiency in terms of encryption time
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
The Internet is known as the set of networks connected by routers that are configured to pass traffic among any machine attached to any network in the set. By internet several
Application-Based IDS Application-based IDS (AppIDS) is an advanced version of HIDS. It examines application for abnormal events. The ability to view encrypted data is the uniqu
Why an organization need the issue specific security policy
Write down short notes on the architecture of WWW which is World Wide Web. WWW which means The World Wide web or the web is a repository of information spread worldwide and rel
The following message was enciphered with a Vigenère cipher. aikiaawgfspxeppvjabjnivulfznzvkrlidamsmyamlvskniyffdpbwtnxsvvbtnamvltsefoeycztkomylmerkwrs deusjgecmzkwvnreeyp
BUS TOPOLOGY In a bus topology all devices are attached to a single long cable and any device can send data to any other device. For this function, coordination is needed to d
Q. What is Triple Key Management Scheme? The triple key management mechanism provides optimum security by enabling the use of two pre-deployed keys for each of the WS nodes, an
Security Clearances For a security clearance in organizations each data user should be assigned a single level of authorization indicating classification level. Before approachi
Transposition technique
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