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Question 1
(a) Explain briefly the following terms as used in network security:
(i) Denial of service (DoS) attack
(ii) Birthday attack
(iii) DeMilitarized Zone (DMZ)
(iv) Social Engineering
(v) Pretty Good Privacy (PGP) algorithm
(b) (i) List three benefits of using IPSec.
(c) Briefly explain the Cipher Block Chaining (CBC) mode of operation stating its advantages, disadvantages and uses.
(d) Describe five guidelines for a desirable password selection and use policy in a corporate organisation.
THREADS AND ATTACKS Threat is an object, person, or other entity which represents a constant danger to an asset. To make sound decisions about information security, management s
IPv6 ADDRESSING IPv6 has 128-bit addresses. A 128-bit address adds network prefix and host suffix. An benefit of IPv6 addressing is that there is address classes i.e. prefix/s
POLICY MANAGEMENT Policies should be managed as they constantly change. Good policy development and maintenance make a more resilient organization. All policies undergo tremendou
(a) What are the different architectures for wireless networks? (b) Explain how WEP authentication and encryption works, describe the vulnerability. (c) In what ways are secu
IDS RESPONSE BEHAVIOR Once IDS detects an anomalous network situation, it has a number of options. IDS responses to external stimulation can be classified as active or passive.
Consider a computer system with three users: Alice, Bob and Cindy. Alice owns the file alicerc, and Bob and Cindy can read it. Cindy can read and write the file bobrc, which Bob ow
COLLISION: The receiver can get simultaneous requests, which gives in collision at receivers and both service lost and in this way no transmitter accepts reservations and both use
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Identify Possible Controls For each threat and linked vulnerabilities which have residual risk, create primary list of control ideas. Residual risk is the risk which remains to
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