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Question:
(a) State whether the following statements are TRUE or FALSE. Justify your answer.
i. A good site security policy will require that users use computer generated password that are changed monthly.
ii. Mandatory Access Control policy allows the current owner of a data file to specify who has access.
(b) How is dictionary attacks made difficult against Unix systems? Which file is instrumental in preventing dictionary attack altogether?
(c) Which database recovery techniques provide an exact, up-to-date copy of the database maintained at an alternative location?
(d) What combination of backup strategies provides the fastest backup creation time?
(e) Given that a file in UNIX has the 9 mode bits set as follow: 111 110 100, describe the access rights encoded.
(f) What is the major difference between a virus and a worm?
What is information Information comprises the meanings and interpretations which people place upon the facts, or data. The value of information springs from the ways it can be i
Topic -Spam is an ever-growing problem, with some network administrators reporting that 90% or moreof the email delivered to their mail servers is spam. Identify and briefly evalua
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Assume that the RSA problem is hard, prove that the RSA encryption is secure against IND- CPA. Provide a game between an adversary A and a simulator (or challenger) B.
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Question a) From the capture below: Give the datagram source IP address, upper layer protocol, Total length in decimal and header checksum in hexadecimal; the segment source po
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