Isochronous vs asynchronous vs synchronous transmission

Communication And Networks Assignment

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.

https://www.imda.gov.sg/programme-listing/smes-go-digital/Digital-Solutions-For-Safe-Reopening
https://www.imda.gov.sg/programme-listing/smes-go-digital/Digital-Solutions-For-Safe-Reopening
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.

mailto: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