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Suppose a client computer with IP address 127.192.92.30 in building ZZ requests a large web page from the server in building XX (www.xyz.com). Assume that the client computer has just been turned on and does not know any addresses other than those in its configuration tables. Assume that all gateways and Web Servers know all the network layer and data link layer addresses.
a. Explain what messages would be sent and how they would flow through the network
i) to deliver the Web page request to the server and
ii) as the Web server sent the requested page to the client.
b. Why does HTTP at the application layer uses TCP while DNS uses UDP when it passes its message packet with overhead to the Transport Layer and then hand it off to the Network Layer?
Explore ways to secure a wireless network and present your findings in a brief report(1 page is fine, more is ok). Talk about your own experiences with using a wireless network, including the things you do to keep the network secure.
You are the Information Security Officer at a medium-sized company (1,500 employees). The CIO has asked you to explain why you recommend it is so important to secure your Windows.
When merging transaction and analytical processing problem occurs. Real-time analytical processing diminishes performance of transaction processing. Find the solution to this problem which many companies use?
Write down two such problems? Can we make sure same degree of security in time-shared machine as in dedicated machine?
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.
The telephone communication systems and long distances agreements are managed by a telecommunications department in the headquarters that reports to the vice president of finance. Outline pros and cons of both alternatives.
two hosts, A and B, are separated by 20,000 kilometers and are connected by a link of R=2 Mbps, and there are 4 routers between A and B. Suppose the propagation speed over the link is 2.5*108 meters/sec, average queueing time is 2ms,
Discuss how may two routers be used to give separation of a LAN from the outside world?
You are asked to create the network for use in training environment. It must be mobile, ... Mobile Training is small training firm which offers mobile classrooms.
Your boss has just heard about some nefarious computer activities known as ping sweeps and port scans. He wishesto know more about them and what the impact of these activities might be on company.
Describe the advantages and disadvantages of several different Web 2.0 technologies. How could these technologies be used for good? What types of problems might these technologies cause?
Personel.mycompany.com in URL address box to browse this Web site. Write down steps do you take so that each computer in company can browse the site using URL?
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