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Question:
(a) Your office administrator is being trained to take server backups. Which authorization model could be ideal for this situation: MAC, DAC or RBAC? Justify your answer.
(b) If an employee is fired, what should you do as an information security specialist?
(c) Which of the given choices best represents a strong password? Justify your answer
brians. An7!$4Dt. bob1965. 123abc.
(d) State whether the following statements are TRUE or FALSE. Justify your answer.
i. A user's effective permissions can be inherited from multiple groups.
ii. Kerberos provides one-way authentication only i.e. only client is authenticated
FRAGMENTATION AND PATH MTU IPv6 source is responsible for fragmentation. Routers simply drop datagrams bigger than network MTU. So source have to fragment datagram to arrive d
VIRTUAL PACKETS These data packets serve same reason in Internet as frames on LAN. Every packet has a header. Routers, which are normally gateways, transfer packets between ph
Asymmetric Encryption Asymmetric encryption method makes use of two different but related keys and either key can be used to encrypt or decrypt the message. This method is freque
Problem (1) - Alice, Bob and Charlie have a secret key a=3, b=4, c=5, respectively. - They want to find a common secret key using Diffie-Hellan key exchange protocol (with g
Question: (a) How can you prevent someone from accessing your computer when you leave your office for some time? (b) What is the difference between a classic login and a w
How safe is the encryption of virtual private networks?
- Alice, Bob and Charlie have a secret key a=3, b=4, c=5, in that order. - They would like to find a common secret key using Diffie-Hellan key exchange protocol (with g=2, p=5).
Question: a) Give two reasons why the building-block approach is favoured to the traditional network design approach. b) With reference to network monitoring parameters, dis
Problem (a) Using Vigenère cipher and given the key abc, find the ciphertext for the message: simplicity Only the 26 lower-case alphabetical characters are used in messa
Question (a) Name 3 popular electronic mail access protocols? (b) i. What is DNS? ii. Briefly, describe what it does and how it works? iii. Why does DNS use a dist
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