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Ellen Longbow is chief financial officer (CFO) at startup e-commerce firm that sells products popular with college students. She has asked you to do some Internet research on three competing companies which allow credit-card purchases at their e-commerce sites. Prepare the table (or spreadsheet) which summarizes how each site handles the following issues: (a) what information does each site need before permitting you to use credit card? (b) What steps should you go through to complete transaction? (c) What features do they incorporate to facilitate overcoming limits of security, merchant risk, cost, etc.? (d) How do they validate cardholder identities?
By using a laptop computer along with a wireless connection into company’s local area network, you download a Web page from Internet. State all several network connections involved within this operation.
Consider improved version of Vigenere cipher, where instead of using multiple shift ciphers, multiple mono-alphabetic substitution ciphers are used.
It is essential to encrypt it, by using solutions like PGP (Pretty Good Privacy), S/MIME (Secure Multi-Purpose Internet Message Exchange), and steganography. Research these different mechanisms.
Assume that routers were subjected to conditions which might cause them to fail fairly often. Would this argue in favor of a VC or datagram architecture? Explain why?
For each of the following attacks, say whether the attack can be detected and mitigated (to a significant degree) by a stateless or stateful firewall. Explain briefly.
Each of network segments has at least one NetWare server on it. Which of the given replies to Get Nearest Server (GNS) request from client?
Write a short description of what they are and include your assessment of whether this activity is something to worry about or not.
Depreciation will be calculated using the 3-year MACRS rates of 33%, 45%, 15%, and 7% for the first through the fourth year, respectively. Looner Industries' marginal tax rate is 40%, and its cost of capital is 10%. Should the plant be built?
Develop a simple backbone and determine the total cost (i.e., select the backbone technology and price it, select the cabling and price it.
Define and describe the OSI model, TCP/IP protocol, File transfer protocol, or wireless workstation giving examples of its usage and explaining its' background and history
Describe Quality of Service (QoS) and explain the motivation behind QoS Referring to the diagram below, configure Routers 1, 2, and 4 with Internet Protocol (IP) addresses, and ping between them to test connectivity. Write down complete commands..
Determine percentage of each IP datagram will be overhead and percentage will be application data? Illustrate all computations required.
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