ITC560 Internet Technologies PG
Task
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 108 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)
(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)
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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.
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