Internet Technologies. computer science homework help

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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 Turnitin. 

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 why the OSI model is better than the TCP/IP model. Why hasn’t it taken over from the TCP/IP model? (5 Marks)

Question 3: Calculate the approximate bit rate and signal level(s) for a 3.5 MHz bandwidth system with a signal to noise ratio of 133 (5 Marks)

Question 4: Compare IPv4 and IPv6 private addressing. Discuss address ranges and relative sizes. Why don’t the same private addresses in different locations cause conflict on the Internet? (5 Marks)

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

Question 6: What is a Distributed Hash Table (DHT) and how is it used in P2P networks? Briefly explain how a DHT works with an example of a P2P network. (5 Marks)

Rationale

This assessment consists of six questions assessing a basic understanding of network & data communication models, next generation IP and application layer paradigm. This assessment covers the following learning objectives:

  • define and explain various Internet technologies;
  • describe and analyse the role and importance of Internet technologies in the modern world; and
  • explain how different application layer services such as client-server and peer-to-peer paradigms work in the Internet.

Marking criteria

The following guide will be used while assessing each component of this assessment item. NB All your work must be cited (CSU APA), otherwise up to 100% of marks can be deducted.

HD

DI

CR

PS

FL

In depth synthesis of various Internet technologies In depth use of a good range of relevant literature to address the questions. Clearly defines various internet technologies, with evidence of synthesis of own research and prescribed reading in topics. Evidence of using relevant literature to address the questions. Correctly defines various internet technologies with evidence of synthesising some external readings and prescribed reading in topics. Use of some relevant literature to address the questions. Provides a definition of various internet technologies. Mostly cited the prescribed text. Synthesised concepts learned from topic readings. Limited evidence of using relevant literature to address questions. Provides a definition of various internet technologies but little evidence of linkages or connections to topic readings. No clear definition or explanation when addressing questions. Little or no clear information provided.
Evidence of applying own reseach to concepts of the role and importance of Internet technologies in the modern world In depth use of relevant literature to address the questions. Demonstrates a high level of information analysis of the role and importance of internet technologies in the modern world. Evidence of using relevant literature to address the questions. Demonstrate a good level of information analysis of the role and importance of internet technologies in the modern world. Use of some relevant literature to address the questions. Demonstrates analysis of information around the role and importance of internet technologies in the modern world. Limited evidence of using relevant literature to address questions. Provides a description and some information around the importance of internet technologies in the modern world without much analysis. No clear description or analysis provided to address the questions.
Explain different application layer services No errors in the material presented, with an in-depth, clear, well-structured explanation of different application layer services. No errors in the material presented, with clear, well-structured explanation of different application layer services. The material presented was generally clear and well-structured explanation of different application layer services with some omissions. The material was generally presented in a clear manner, however some errors or omission of information impedes understanding of what student is trying to explain in terms of different application layer services. Evidence that the student is unaware of the different application layer services.

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.

Title

Student Name and Student ID

Student Email Contact

Answer all Questions

References – 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, becasue 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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