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a) Describe the attenuation problem and why it is important.
b) A signal is transmitted at 50 mW. When it reaches the receiver, its strength is 5 mW. On a percentage basis, how strong is the final signal relative to the initial signal?
c) By what percentage has the signal declined in strength?
d) Describe the noise problem.
e) What is the signal-to-noise ratio, and why is it important?
f) As a signal propagates down a UTP cord, the noise level is constant. Will greater propagation distance result in fewer noise errors, the same number of noise errors, or more noise errors? Explain.
g) Does noise cause errors when the signal strength falls to the noise floor or below it? Explain.
The Analog to Digital converter has V(t) as its input, and it outputs a binary word B(t) with a fixed length of k bits, which is its best approximation to V(t). Suppose that V(t) can vary continuously between zero and 5 volts
Computed hash value for the message. Alice is able to intercept message, and generates alternative message that has a hash value that collides with Bob's original hash value. Show.
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?
Using the search tools available to you, identify three or more switch manufacturing companies and describe the features of two different switch types from each company. Based on what you know so far, how might you use the devices you've identifie..
You have been tasked by your company to lead your team to plan, deploy and manage the computer / IT network for a large financial company "First Finance" who are shifting their head office to a new building. The whole project has to be completed i..
(15%) Allen FINALLY has been able to secure broadband service to his home in a remote area of the country via newly installed telephone lines. He had a powerful desktop. But he wants to be able to sit on his deck when using his new laptop to do his o..
Determine maximum number of hosts in this subnet? How many different subnets exist in this IP network using subnet mask?
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.
Users are familiar with some network services like HTTP (Hypertext Transport Protocol) - Web, NNTP (Network News Transport Protocol). How do they figure into organizational security?
Given that both engineering and front office areas use 10BaseT (twisted-pair Ethernet), how might you interconnect those two areas? Explain what meduim guarantees immunity from interference?
After choosing unused address from the range given in d for the IP address for a device on the LAN, what would the IP subnet mask and gateway be set to? Explain why these settings would be used.
A company is interested in upgrading its current core infrastructure, which comprises 2 100mbps switches which connect to a utility room that houses 8 100mbps switches wired with Ethernet Category 5 that run to each client machines.
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