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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?
How to check Network working
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 certi
Q. Attacks on wireless network WSN are vulnerable to attacks which compromise the integrity of the WSN nodes by decreasing the nodes' fault tolerance capabilities, data distrib
Hardware, Software, and Network Asset Identification What information attributes to track is dependent on: • Requires of organization/risk management efforts • Management
DIRECT INDEXING It is less usually known method. It is possible only is cases where protocols address are given from a compact range. In the diagram below an example of direct
'Near Field Communication' (NFC) technologies are expected to become commonplace in the near future. Some relevant features are these: A suitable device (such as a mobile pho
Problem: (a) Assume that a new application layer protocol is developed for video conferencing application. Which transport layer protocol, between TCP and UDP, will you u
POLICY MANAGEMENT Policies should be managed as they constantly change. Good policy development and maintenance make a more resilient organization. All policies undergo tremendou
Question: (a) For the bit stream 010011, sketch the waveforms for each of the code indicated. Assume the following: the signal level for the previous bit for NRZI was a 1
(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
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