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# [Solved] EXPLAIN ENCAPSULATION AND DECAPSULATION IN A FIVE LAYER TCP IP PROTOCOL SUITE

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### [Solved] EXPLAIN ENCAPSULATION AND DECAPSULATION IN A FIVE LAYER TCP IP PROTOCOL SUITE

In this paper, you are required to present a report covering the questions. You must explain encapsulation and de-capsulation in a five (5) layer TCP/IP protocol suite and discuss the advantages and disadvantages of star, bus, and mesh physical topologies. Furthermore, you must calculate the approximate bit rate and signal level(s) for a 6.8 MHz bandwidth system with a signal to noise ratio of 132 and explain why the OSI model is better than the TCP/IP model. Finally, discuss the total delay (latency) for a frame of size 5 million bits that is being sent on a link with 10 routers and present a diagram and explain to show these four states and how POP3 moves between them.

Provide short answers to the following six questions. Your answers should be clear, concise and to the point. Prepare a single document (MS Word or PDF, NOT both) along with title page and submit it online using EASTS.

Question 1: Discuss the advantages and disadvantages of star, bus, and mesh physical topologies. Provide real examples of each type. (5 marks)

Question 2: Explain encapsulation and decapsulation in a five layer TCP/IP protocol suite. How does multiplexing and de-multiplexing differ from encapsulation and decapsulation? (5 Marks)

Question 3: Calculate the approximate bit rate and signal level(s) for a 6.8 MHz bandwidth system with a signal to noise ratio of 132(5 Marks)

Question 4: Explain why the OSI model is better than the TCP/IP model. Why hasn`t it taken over from the TCP/IP model? Discuss the advantages and disadvantages of both models. (5 Marks)

Question 5: What is the total delay (latency) for a frame of size 5 million bits that is being sent on a link with 10 routers each having a queuing time of 3.5 µs and a processing time of 1.8 µs. The length of the link is 1900 km, the speed of light inside the link is 2.2 x 10^8 (10 to the power 8) m/s, the link has a bandwidth of 8 Mbps. Which component(s) of the total delay is/are dominant? Which one(s) is/are negligible?
(5 Marks)

Question 6: According to RFC1939, a POP3 session is one of the following states: closed, authorization, transaction or update. Draw a diagram and explain to show these four states and how POP3 moves between them. (5 Marks)

Presentation

Your assessment should be submitted in either MS Word or PDF format (PDF usually preserves the formatting, MS Word may not). Please do not submit your assignment in any other format and also do not submit multiple copies of the assessment. Please use A4 page size with Times New Roman / Ariel / Calibri font and use font size 11 or 12. The following should be included as minimum requirements for the assessment.

Text Book and Reference Book:
You must use the CSU APA referencing style for all cited material you have used in
your work. You must use primary sources (ie Wikipedia is not acceptable, something you thought up yourself, because you think you know better, is also unacceptable - unless it has been published and peer reviewed - but it still needs to be cited)

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• Title: [Solved] EXPLAIN ENCAPSULATION AND DECAPSULATION IN A FIVE LAYER TCP IP PROTOCOL SUITE
• Price: £ 99
• Post Date: 2021-10-25T04:39:40+00:00
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