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Computer Dynamics is a microcomputer software development company that has 300-computer network. The company is located in three adjacent five-story buildings in an office park, with about 100 computers in each building. The current network is a poorly designed mix of Ethernet and token ring (Ethernet in two buildings and token ring in the other). The networks in all three buildings are heavily overloaded, and the company anticipates significant growth in network traffic. There is currently no network connection among the buildings, but this is one objective in building the new network. Describe the network you would recommend and how it would be configured with the goal of building a new network that will support the company's needs for the next 3 years with few additional investments. Be sure to include the devices and type of network circuits you would use. You will need to make some assumptions, so be sure to document your assumptions and explain why you have designed the network in this way.
Define the type of packet filters that you might build to capture traffic destined to you six critical Web servers?
Determine the purpose of the key tag in the RRSIG resource record.
Given a DAC system explain how a MAC system could be "implemented" on top of this DAC system. Explain any problems and assumptions.
You are hired to design an IP addressing scheme for five departments that will give security and access to Internet. Each department requires between 1,500 - 2,000 IP addresses.
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Assuming that switches user store-and-forward packet switching, what is the total end-to-end delay to send a packet of length L? (Ignore queuing, propagation delay, and processing delay.)
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?
How could you interconnect the two areas? Assuring that the network has immunity from the interference; re-evaluate your choice explaining the best medium(s) to utilize.
She has bids from several companies in order to install (1) Wi-Fi, or (2) a switched Ethernet 100 Base T network. She wishes you to provide her some sense of relative performance of the alternatives so that it may be related to the costs of each o..
Explain the purposes of POE in WLAN design. Provide at least 3 scenarios of POE being used as the prime element in WLAN design to address the projects cost
In second strategy, packets are not acknowledged individually, but the whole file is acknowledged when it arrives. Explain the two approaches.
You have been asked to sketch a LAN with operation over a distance of about 100m.
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