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Obtain the HTTP/1.1 specification (RFC 2616). Answer the following questions:
a. Explain the mechanism used for signaling between the client and server to indicate that a persistent connection is being closed. Can the client, the server, or both signal the close of a connection?
b. What encryption services are provided by HTTP?
Assume that no packet or acknowledgement are dropped. Assume that A sends a packet to C and waits for its acknowledgement to come back from C. How long does it take until A gets that acknowledgement?
Give a hypothetical situation for each signal type which illustrates how it could be, or is being, used in WAN. In what circumstance, for example, would a company choose to use a satellite signal?
Explain how a client process in a given end system can find the location of a given user to establish a connection, for example, Internet telephone, at a given point in time.
Assuming that it is possible to protect the repository from attack, what are the disadvantages of this approach?
Wireless DSL is available in her apartment building for $45 per month for 1.5 Mbps down and 256 Kbps up. Explain the differences in these services and make a recommendation.
Design an algorithm that, under the standard set of assumptions (bidirectional links, total reliability, connectivity), determines maximum value in the ring assuming that there is a unique initiator.
Consider transferring an enormous file of L bytes. What is the maximum value of L such that TCP sequence numbers are not exhausted? Give proper justification?
Explain to your team the differences between routers and switches. Compare them and list the pros and cons of using each type of hardware.
Give a most implementable WLAN design solution for office with 20 wireless employees, using WLAN capable laptops to access email, Internet, small accounting applications.
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.
Design a switched network to compliment your routed network. Each department will require five switches that will plug into the router cards.
How many IP addresses would they have per subnet?
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