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Bob believes that he has come up with a nifty hash function. He assigns a numeric value VChar to each letter in the alphabet equal to the letter's position in the alphabet, i.e., VA = 1, VB = 2, ..., VZ = 26. For a message, he calculates the hash value H = (VChar 1 x VChar 2 x VChar 3 ...x VChar N) mod(26). Bob uses this function to send a one-word message, LARGE, to his banker Bill, along with his calculated hash value for the message. Alice is able to intercept the message, and generates an alternative message that has a hash value that collides with Bob's original hash value. Show.
Investigate the methods by which users could gain access to the network. Pay particular attention to: The problems of having open access for all users.
After reading about attacks on servers like to ones used in one of company's departments, the CIO has asked you to come up with a report as to what.
Provide a network design, a drawing of a solution to address the following: Transferring of videos and music files between computers, Sharing Internet connection, one laser printer, and one photo printer
Identify the top three risks in this situation. For each risk, document its risk event, impact, probability, impact rating/risk exposure, and mitigation strategy.
Type-1 certification (TOP SECRET) focuses on Development Methodology. How would you address this certification issue with your hypothetical company (make up one for this problem) for your system
Assume nodes A and B are on same 10 Mbps Ethernet bus, and propagation delay between two nodes is 245 bit times. Does B refrain from transmitting at its scheduled time?
Assume nodes A and Bare on the same 10 Mbps Ethernet bus, and the propagation delay between the two nodes is 325 bit times. The answer is no, if B 's signal reaches A before bit time t = 512 + 64 bits. In the worst case, when does B's signal reach A?
Research a Metro Ethernet service that is offered by a vendor in your country (or another country if your country doesn't have Metro Ethernet).
What are some benefits and drawbacks of using social networking?
Suppose a future where security countermeasures against DoS attacks are much more widely implemented than at present.
Twenty-four voice signals are to be multiplexed and transmitted over twisted pair. Determine total bandwidth needed if frequency division multiplexing is used?
Write down the analogous steps in dimensioning a computer network?
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