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An interesting emerging market is using Internet phone and a company's high speed LAN to replace the same company's PBX. Write a report on this issue. Cover the following questions in your report: a. What is a PBX? b. Consider a call between a user in the company and another user out of the company who is connected to a traditional telephone network. What sort of technology is needed at the interface between the LAN and the traditional telephone network? c. In addition to Internet phone software and the interface in Part b (above) what else is needed to replace the PBX?
Illustrate attacks and defenses to these session key establishment protocols at all levels, including one or both of communicating machines being compromised.
Explain if private IP addressing should be used in conjunction with NAT (Network Address Translation)? Describe what IP class you would consider using.
Consider transferring a large file of L bytes from Host A to Host B. Assume a MSS of 1460 bytes. What is the maximum value of L such that the TCP sequence numbers are not exhausted?
Determine the decryption function. What is the decrypted plaintext?
From the e-Activity, determine whether you prefer a laptop or desktop. Elaborate on the features that you would want your desktop or laptop to offer, and provide an explanation of why you would want such features.
Which type of network provides customers with limited access to corporate data such as inventory, parts lists, and orders?
Prepare a three-column table (one column for each technology) in which you list the advantages and disadvantages of each connection method.
You've just taken a position as a network administrator for an 80-person company, and you are the only network administrator there. On the surface, it looks like everything has been working fine in the three months since the previous network admin..
Can you configure your browser to open multiple simultaneous connections to a Web site? What are the advantages and disadvantages of having large number of simultaneous TCP connections?
Networking modes: What is connection-oriented networking? How many modes can it be operated and what are they?
Use the Web to locate two disaster recovery services that could be used by a small business such as Dirt Bikes. Compare them in terms of the services they offer.
The node in Denver crashes completely. How do the other nodes in the country find out about the crash if RIP is used? If OSPF is used?
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