Tag: Computer science

Write a 3-4 page paper (400 words per page) describing the open systems interconnection (OSI) model and how it relates to a network. Your response should include answers to the following:

·  On which layers of the OSI model do WAN protocols operate?

·  What are some of these protocols?

·  On which OSI layers do switches and routers operate?

·  If routers reside at more than one layer, what is the difference between the OSI layers?

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Discussion Question 1

Write a 250- to 300-word short-answer response to the following:

·  What are two WANs that you have used? What equipment or devices were used? Describe the network design and configuration? Respond to your classmates, and discuss how your examples differ.

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Discussion Question 2

Write a 250- to 300-word short-answer response to the following:

·  Chou (2009) discusses a very common situation in business, communications between branch offices, and the home office data center. The author presents two methodologies to improve throughput between the offices and the data center: data compression and caching. Analyze and discuss the common types of data used in your company to test the suitability of these methods. Additionally, discuss where, in general, data compression can be used and where data compression cannot be used.

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Discussion Question 3

Write a 250- to 300-word short-answer response to the following:

·  Soares, et al. (2008) review all the present protocol segments necessary for VoIP telephony. Protocol such as Session Initiation Protocol (SIP) and H.323 are prevalent but have limitations. Analyze and discuss the limitations of SIP and H.323 as presently used and include in your discussion effects of the proposed Advanced Multimedia System (AMS) protocol and whether it will fix the existing problems.

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Discussion Question 1

Write a 250- to 300-word short-answer response to the following:

·  What are the advantages and disadvantages of VoIP? What VoIP services exist? What equipment may be necessary in a small office/home office (SOHO) and large enterprise environment?

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Discussion Question 2

Write a 250- to 300-word short-answer response to the following:

·  The Internet does not guarantee delivery. Multimedia services such as Internet Protocol television (IPTV) require levels of quality of service (QoS) for acceptable performance. Doverspike et al. (2009) have created a set of internal protocols that help create a QOS scenario to allow IPTV signals to be delivered in an acceptable fashion. Pick any two of the author’s techniques and show how they contribute to the creation of a data stream with QOS.

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Discussion Question 3

Write a 250- to 300-word short-answer response to the following:

·  Based on the Khan and Tahboub (2009) article, analyze and discuss the advantages and disadvantage of the MPLS protocol and what services are most likely to use that protocol in the network.

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Draft a logical network drawing for Acme to depict the recommended WAN. Include the recommendations for the type of leased lines the company should choose at each location.

Draft recommendations on the type of telecommunications systems that would work best for Acme: private branch exchange (PBX) or VoIP.

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Discussion Question 1

Write a 250- to 300-word short-answer response to the following:

·  Conduct an Internet search to locate an example of a private network and a public network. How is each network used? What are the pros and cons of each?

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Discussion Question 2

Write a 250- to 300-word short-answer response to the following:

·Explain sub-netting in a way a nontechnical client would understand. Add clarification to other student explanations.

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