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Diploma in Information Technology
Communications and Networks
Instruction for CA3 Individual Assignment
January 2021 Semester
Continual Assessment 3 Individual Assignment (40%)
Task:
The objective of this assignment is to allow students to apply the concepts taught in
class and gain some knowledge on the designing networks. When doing research
beyond lesson materials, students are encouraged to check the validity of the
sources before using it in the assignment.
This assignment will make use of what you have learnt in:
• Lesson 9 Wired Media • Lesson 13 Modulation
• Lesson 10 Wireless Media • Lesson 14 Multiplexing
• Lesson 11 Error Handling • Lesson 15 Interconnection
Technologies
• Lesson 12 Transmission Modes • Lesson 16 Packet and Circuit
Switching
Read the following article on the Digital Solutions about Safe Reopening:
Article (1): https://www.imda.gov.sg/programme-listing/smes-go-digital/Digital-
Solutions-For-Safe-Reopening
DigiSec is an IT consultancy firm that helps education institutions digitalise their
processes and enables remote working. What distinguishes DigiSec from other IT
consultancy firms is that they believe in a combination of cloud and LAN
technologies to enable efficient data communication.
DigiSec has a list of remote working and collaboration tools that institutions can use
to expand their workforce overseas. This is also important for large multi-national
institutions to save on commute cost for their employees.
DigiSec is planning to setup a branch in Singapore and they are aware of the current
state of the virus pandemic that has forced many education institutions to conduct
classes virtually.
To qualify working for DigiSec, you are required to showcase some of your
knowledge in networking. Your task is to write a report to explain some networking
concepts.
Task Instructions
1. Make sure your report is related to DigiSec and Article (1).
2. Please make use of definitions and concepts covered in this module. You are
encouraged to use external sources to further support the concepts but not
replace the definitions.
3. You are required to read the Report Instructions. Failure to do so will result in
deduction of up to 20% of the total marks.
Question 1
(i) Write a summary, in at least 300 words, for Article (1). In your summary,
describe, with examples, what is online collaboration, virtual meetings, e-
signatures, workforce management and visitor management.
(ii) Many education institutions in Singapore are moving into virtual classroom
solutions. Explain and justify, in at least 100 words, which category of tools
should education institutions be looking into in Article (1).
(iii) Distinguish, in at least 200 words, between serial and parallel transmissions.
Do include diagrams, where possible, to illustrate the differences.
(iv) DigiSec is planning to introduce software and tools to private education
institutions to support remote learning. Recommend and justify, in at least 200
words, whether serial or parallel transmission is more suitable for:
a. High speed transmission
b. Long distance transmission at low cost
Question 2
(i) DigiSec is tasked by one of the education institutions to set up a telephone
system within their campus. Describe, in at least 100 words, the purpose of
modulators and demodulators in such scenario.
(ii) Explain with examples, in at least 200 words, FOUR (4) different types of
multiplexing techniques.
(iii) Distinguish, in at least 100 words, the difference between modulation and
multiplexing.
(iv) Propose and justify in your own words, in at least 200 words, a network
topology and wired/wireless media that DigiSec can recommend to their
clients. Your proposal should include network topology diagram that
supports the following:
1) 100x computers/laptops
2) 10x printer
3) 10x scanner
4) 1x Email server
5) 1x Domain Name Server
Question 3
(i) One of the error checking techniques that DigiSec recommends to their clients
is Hamming Code. Describe and show how the following byte can be coded
using an even Hamming Code.
1010 1001
(ii) Suppose one of the bits is corrupted and the bits received were as followed:
1100 0110 0101
a. Describe and show how a one-bit error can be detected and then
corrected.
b. Describe and give the correct byte that was transmitted.
Report Instructions
Format:
1. The report should have a cover page, content page, write-up on the task,
references, and optional appendices.
2. The cover page should include:
i. Institution name and institution logo of this programme
ii. Module name, term, and year
iii. Date of submission
iv. Student’s name and student ID numbers
3. Each question should start on a separate page and must be answered in paragraph
forms. Bulleted points and tables may only be used to support the answer.
4. The references and citations should be presented in Harvard or APA format and
should have at least THREE (3) references.
Report Word Limit
1,500 to 2,000 words
Report Font and Spacing
Font: Calibri, Black
Font size: 12 and 1 ½ or double spacing.
Penalty Marks for Late Submission
By one day: 20% to be deducted from total marks.
More than one day: submission will NOT be graded.
Plagiarism and Collusion
The submitted report must show evidence that this is students’ own work. ZERO
MARKS will be awarded if there are no workings, reasonable explanations, or
citations. Please be reminded that plagiarism and collusion is a serious offence, and
all cases will be referred to the administration. Grades will be withheld if the submission
is suspected of plagiarism or collusion till investigations are completed.
Important Deadlines
CA3 Written Report Deadline: 15 February 2021, 11.59a.m. Submit the softcopy
of your report via D2L/eGlobal.
Marking Rubric
The marking rubric for the written report can be found in the appendix of this
assignment. Please understand the marking rubric carefully and allocate your time
accordingly.
Lecturer Contact
You should contact your lecturer via your SIM email whenever you have any issue
about your project. You may send your email to: wbkoh001@mymail.sim.edu.sg.
Appendix
S/N Criteria Excellent Very good Good Acceptable Weak
1 Understanding
of the
Assignment
(5%)
Student has interesting,
logical, reasonable, and
non-obvious interpretation
of the assignment
Student has logical,
reasonable, and non-
obvious interpretation of
the assignment
Student has logical
and reasonable
interpretation of the
assignment
Student has logical
interpretation of
the assignment
Student has weak
interpretation of
the assignment
2 Question 1
(40%)
Student has a clear
understanding of the
question requirements
and can describe these
requirements effectively
and appropriately
Student has a clear
understanding of the
question requirements
and can describe these
requirements
appropriately.
Student has
sufficient
understanding of the
question
requirements and
can describe these
requirements
appropriately.
Student has limited
understanding of
the question
requirements and
is able to describe
these requirements
to some extent.
Student has limited
understanding of
the question
requirements but is
unable to describe
these
requirements.
3 Question 2
(30%)
Student has provided
appropriate solutions with
detailed explanation
Student has provided
appropriate solutions
with detailed
explanation to some
extent
Student has provided
appropriate solutions
with sufficient
explanation
Student has
provided solutions
but one of the
solutions is
inappropriate
Student
misunderstood the
question or has not
provided any
solution
4 Question 3
(20%)
Student has provided in-
depth description of their
workings
Student has described
in some detail about
workings
Student has
described the
workings
Student has
described the
workings to some
extent
Student has briefly
described the
workings
performed
6
Referencing
(5%)
Student has used more
than sufficient referencing
and practiced appropriate
referencing and citations
style
Student has used
sufficient referencing
and practiced
appropriate referencing
and citations style
Student has used
some referencing
and practiced
citations style
Student has used
limited referencing
Student has used
less than
satisfactory
amount of
referencing
学霸联盟
Communications and Networks
Instruction for CA3 Individual Assignment
January 2021 Semester
Continual Assessment 3 Individual Assignment (40%)
Task:
The objective of this assignment is to allow students to apply the concepts taught in
class and gain some knowledge on the designing networks. When doing research
beyond lesson materials, students are encouraged to check the validity of the
sources before using it in the assignment.
This assignment will make use of what you have learnt in:
• Lesson 9 Wired Media • Lesson 13 Modulation
• Lesson 10 Wireless Media • Lesson 14 Multiplexing
• Lesson 11 Error Handling • Lesson 15 Interconnection
Technologies
• Lesson 12 Transmission Modes • Lesson 16 Packet and Circuit
Switching
Read the following article on the Digital Solutions about Safe Reopening:
Article (1): https://www.imda.gov.sg/programme-listing/smes-go-digital/Digital-
Solutions-For-Safe-Reopening
DigiSec is an IT consultancy firm that helps education institutions digitalise their
processes and enables remote working. What distinguishes DigiSec from other IT
consultancy firms is that they believe in a combination of cloud and LAN
technologies to enable efficient data communication.
DigiSec has a list of remote working and collaboration tools that institutions can use
to expand their workforce overseas. This is also important for large multi-national
institutions to save on commute cost for their employees.
DigiSec is planning to setup a branch in Singapore and they are aware of the current
state of the virus pandemic that has forced many education institutions to conduct
classes virtually.
To qualify working for DigiSec, you are required to showcase some of your
knowledge in networking. Your task is to write a report to explain some networking
concepts.
Task Instructions
1. Make sure your report is related to DigiSec and Article (1).
2. Please make use of definitions and concepts covered in this module. You are
encouraged to use external sources to further support the concepts but not
replace the definitions.
3. You are required to read the Report Instructions. Failure to do so will result in
deduction of up to 20% of the total marks.
Question 1
(i) Write a summary, in at least 300 words, for Article (1). In your summary,
describe, with examples, what is online collaboration, virtual meetings, e-
signatures, workforce management and visitor management.
(ii) Many education institutions in Singapore are moving into virtual classroom
solutions. Explain and justify, in at least 100 words, which category of tools
should education institutions be looking into in Article (1).
(iii) Distinguish, in at least 200 words, between serial and parallel transmissions.
Do include diagrams, where possible, to illustrate the differences.
(iv) DigiSec is planning to introduce software and tools to private education
institutions to support remote learning. Recommend and justify, in at least 200
words, whether serial or parallel transmission is more suitable for:
a. High speed transmission
b. Long distance transmission at low cost
Question 2
(i) DigiSec is tasked by one of the education institutions to set up a telephone
system within their campus. Describe, in at least 100 words, the purpose of
modulators and demodulators in such scenario.
(ii) Explain with examples, in at least 200 words, FOUR (4) different types of
multiplexing techniques.
(iii) Distinguish, in at least 100 words, the difference between modulation and
multiplexing.
(iv) Propose and justify in your own words, in at least 200 words, a network
topology and wired/wireless media that DigiSec can recommend to their
clients. Your proposal should include network topology diagram that
supports the following:
1) 100x computers/laptops
2) 10x printer
3) 10x scanner
4) 1x Email server
5) 1x Domain Name Server
Question 3
(i) One of the error checking techniques that DigiSec recommends to their clients
is Hamming Code. Describe and show how the following byte can be coded
using an even Hamming Code.
1010 1001
(ii) Suppose one of the bits is corrupted and the bits received were as followed:
1100 0110 0101
a. Describe and show how a one-bit error can be detected and then
corrected.
b. Describe and give the correct byte that was transmitted.
Report Instructions
Format:
1. The report should have a cover page, content page, write-up on the task,
references, and optional appendices.
2. The cover page should include:
i. Institution name and institution logo of this programme
ii. Module name, term, and year
iii. Date of submission
iv. Student’s name and student ID numbers
3. Each question should start on a separate page and must be answered in paragraph
forms. Bulleted points and tables may only be used to support the answer.
4. The references and citations should be presented in Harvard or APA format and
should have at least THREE (3) references.
Report Word Limit
1,500 to 2,000 words
Report Font and Spacing
Font: Calibri, Black
Font size: 12 and 1 ½ or double spacing.
Penalty Marks for Late Submission
By one day: 20% to be deducted from total marks.
More than one day: submission will NOT be graded.
Plagiarism and Collusion
The submitted report must show evidence that this is students’ own work. ZERO
MARKS will be awarded if there are no workings, reasonable explanations, or
citations. Please be reminded that plagiarism and collusion is a serious offence, and
all cases will be referred to the administration. Grades will be withheld if the submission
is suspected of plagiarism or collusion till investigations are completed.
Important Deadlines
CA3 Written Report Deadline: 15 February 2021, 11.59a.m. Submit the softcopy
of your report via D2L/eGlobal.
Marking Rubric
The marking rubric for the written report can be found in the appendix of this
assignment. Please understand the marking rubric carefully and allocate your time
accordingly.
Lecturer Contact
You should contact your lecturer via your SIM email whenever you have any issue
about your project. You may send your email to: wbkoh001@mymail.sim.edu.sg.
Appendix
S/N Criteria Excellent Very good Good Acceptable Weak
1 Understanding
of the
Assignment
(5%)
Student has interesting,
logical, reasonable, and
non-obvious interpretation
of the assignment
Student has logical,
reasonable, and non-
obvious interpretation of
the assignment
Student has logical
and reasonable
interpretation of the
assignment
Student has logical
interpretation of
the assignment
Student has weak
interpretation of
the assignment
2 Question 1
(40%)
Student has a clear
understanding of the
question requirements
and can describe these
requirements effectively
and appropriately
Student has a clear
understanding of the
question requirements
and can describe these
requirements
appropriately.
Student has
sufficient
understanding of the
question
requirements and
can describe these
requirements
appropriately.
Student has limited
understanding of
the question
requirements and
is able to describe
these requirements
to some extent.
Student has limited
understanding of
the question
requirements but is
unable to describe
these
requirements.
3 Question 2
(30%)
Student has provided
appropriate solutions with
detailed explanation
Student has provided
appropriate solutions
with detailed
explanation to some
extent
Student has provided
appropriate solutions
with sufficient
explanation
Student has
provided solutions
but one of the
solutions is
inappropriate
Student
misunderstood the
question or has not
provided any
solution
4 Question 3
(20%)
Student has provided in-
depth description of their
workings
Student has described
in some detail about
workings
Student has
described the
workings
Student has
described the
workings to some
extent
Student has briefly
described the
workings
performed
6
Referencing
(5%)
Student has used more
than sufficient referencing
and practiced appropriate
referencing and citations
style
Student has used
sufficient referencing
and practiced
appropriate referencing
and citations style
Student has used
some referencing
and practiced
citations style
Student has used
limited referencing
Student has used
less than
satisfactory
amount of
referencing
学霸联盟
