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Andrea Stevens Cosmetics is a small cosmetics company that has a network of 30 computers. They are currently using a 10BaseT network that is wired with Category 5 Plenum cable. Their computers were purchased six years ago as a single buy from Dell. The computers have Pentium 4 1.3 Ghz processors, 256 MBytes of memory, and 40 GByte hard drives. Their network has two 24 port hubs and a gateway router that connects them to a Cox cable modem. Most of their computers are used for order processing and inventory control. The computers are arranged in a workgroup called ASC, with all hard drives and printers shared. The manufacturing plant has computerized equipment that is on a separate network that is self-contained and isolated. You are hired as a consultant to bring their network into the 21st century. Based on your knowledge, experience, and what you have read in this week's assignment, propose a replacement network. Describe the components you would recommend and how the network would be configured. Your goal should be a network that will support them for the next five years. Because the information in this mini-case is limited, you will have to make some assumptions. Be sure to document any assumptions that you make.
Consider improved version of Vigenere cipher, where instead of using multiple shift ciphers, multiple mono-alphabetic substitution ciphers are used.
If you have a class B network and want to divide it into subnets, each with 126 hosts, which subnet mask should you use? What are the four addresses (broadcast and network number) for the network starting at 131.204.18?
For the purposes of this question you do not need to know about the token access method. You just want to explain the features and benefits of CSMA/CD.
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.
Write down the advantages and disadvantages of building these three separate models? What representations are used for each of these models?
You have been contracted to make a network for a multimedia development firm which currently uses 10-Mbps Ethernet network. Company needs a high-bandwidth network for multimedia team.
In another year, after all assignments are completed, you consider to convert back to a volunteer basis with AllTechComm, and to discover more profitable employment, preferably with a major company.
Prepare a three-column table (one column for each technology) in which you list the advantages and disadvantages of each connection method.
Research both legacy and VoIP telecommunications. Determine which one is more secure and why.Define what it is and how it will be used in the telecommunications model. Provide 3 sources for your ideas.
Explain how you would incorporate new servers into environment and how you would address what additional changes might be needed.
Retrieving certificates from the directory, having no directory but having each principal responsible for keping its own certificate, and sending it to someone who needs to talk to it?"
It takes 56 milliseconds for workstation to decode each received frame and display it on screen. Will this workstation display video stream successfully? Why or why not?
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