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Question: In this case study we will consider a network administrator for a small, family-oriented video store. The store is not part of a chain of stores and has a very limited security budget. It has five machines for employees to use to check out movies and one server on which to keep centralized records. That server is in the manager's office. The administrator takes the following security precautions:
1. Each machine is upgraded to Windows XP, with the personal firewall turned on.
2. Antivirus software was installed on all machines.
3. A tape backup is added to the server, and tapes are kept in a file cabinet in the manager's office.
4. Internet access to employee machines is removed.
Now consider these questions:
1. What did these actions accomplish?
2. What additional actions might you recommend?
Suppose a web server with one CPU that serves web requests; each web request requires three (time) units of CPU processing and 9 (time) units to read data from disk.
Visit http://myphr.com/ and read information about Personal Health Records.Should everyone have a PHR today?Why or why not? What is its value to you or to your family?How do you go about getting one?Should you worry about privacy?
Design and implement a simple network protocol that can be used to download files from a remote site and to upload files to a remote site, and a client and a server programs that communicate using that protocol.
List and describe the four types of computer networks from largest to smallest. Define client/server computing, packet switching, and TCP/IP. Explain how these three things make the Internet so powerful and robust
List five companies that provide P2P file-sharing services. Identify what types of files P2P file-sharing services can deliver, and if there are different approaches for different file types.
After b. the source receives acknowledgment of receipt of byte 300 and an announcement of a new window size of 300 bytes. Draw a diagram showing the sliding window and pointer at the source.
How do amplifiers differ from repeaters?- What are three ways of reducing errors and the types of noise they affect?
Advantages and disadvantages of using centralized network management versus distributed network management explain
Analyze the technologies for analog-to-digital and digital-to-analog conversions in telecommunications
Process-centered review of object oriented software development methodologies, ACM Computing Surveys (CSUR), Volume 40 Issue 1, February 2008, Raman Ramsin, and Richard F. Paige.
XUMUC is has the WAN links in place to the new locations in the Houston Region. XUMUC currently has 2 other Regions San Francisco and Denver. Originally, XUMUC was only in one region (San Francisco).
To prepare a design for a state of the art network at the Wall Street location of World-Wide Trading. Propose a Network design that solves the current security audit problems (see security sections), to meet business and technical goals. Provide a ..
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