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Question: Discuss and explain each of the seven phases of the systems development life cycle. Make sure your descriptions make connections between the different phases-how one leads to another, the importance of each, etc.
(1) Planning(2) Systems analysis(3) Systems design(4) Development(5) Testing(6) Implementation(7) Maintenance
You decide to prepare a security checklist for New Century. Prepare a list of security issues that the firm should evaluate and monitor. Be sure to organize the items into categories that match the five security levels.
Suppose that there is some consensus with basic premise that most skills can be learnt, which would you expect to be the more productive task,
Propose a detailed plan that focuses on password policies and authentication methods to protect the project from becoming public during the research and development phase.
Students would enter the room, pick up their jobs, and leave. What kinds of security problems might computer services encounter with a system such as this?
Below are ciphertext from Vigenere cipher. Determine plaintext and key. Give a clearly written description of steps you followed to decrypt each ciphertext.
WAP protocol, cellular network infrastructure, SSL protect against eavesdropping, network datagrams (packets) be protected at the network layer, pin and fingerprint, Certificate Revocation, Public Key Infrastructure, modern symmetric algorithm bl..
Assume that instead of using composite N = pq in RSA cryptosystem, we simply use prime modulus p. Calculate m mod p. Justify correctness and analyze running time of decryption algorithm.
Discuss some of the attacks on the Diffie Hellman key exchange protocol we discussed in the lecture. Present your solution for avoiding such attacks.
Servers, administrative and support users 2 subnets with 50 hosts for faculty & student labs 10 or more WAN links for point-to-point home office address. Design the subnet?
Why is one-time password system considered more secure than the basic authentication system? Give at least two reasons.
Illustrate that three security services: Confidentiality, Integrity, and Availability are enough to deal with threats of: (a) Disclosure, (b) Disruption, (c) Deception (deceive = to cause to accept as true.
Describe network crimes that are related to DNS entry alteration or bogus DNS servers. In a network investigation, some network administrators may be cooperative while others may not.
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