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Today is the first class, but it seems like because of the Chinese New Year haven't end and it's the first week of lecture, very few students attend to the class. If I'm not mistaken, I'm the only chinese attend to this class. Luckily, our lecturer Dr. Harryizam Hanun still come to the class. He introduced himself and gave us his information. He also briefly explain the accessment to us.
3 Quizes - 15%
(Will be doing more than 3 quizes, around 7-8, but only the best 3 will be taken)
Both Assignment 1 and 2 are slide presentation, both are 10%.(A1 will present topics from Chapter11, 12 and A2 will present topics from Chapter 13,14)
Final Project- 25%, based on Chapter 9 (Networking Security Policy)
We'll be doing small quiz in the next class.

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INTRODUCTION TO NETWORKING

Today, Dr. Harry covered on Chapter 1: Introduction to network. Communication needeed at least 2 parties which are sender and receiver and they needed a channel to transmit the messages.

5 types of network:

Internet

Telcos (Telecommunication service providers)

Company network (Intranet)

Universal network

Home network (Provides communication among devices within the close area of a house)

4 Keys Elements of the Internet:

Host

IP Address (Unique for every device)

Host name

Domain Name System (DNS)

Network standards are needed to:

Allow hardware and software from different vendors to interoperate.

For two or more equipment that are used for the application interpret and intergrated information stream in the same way.

Ensure both communicating parties utilize the same standards for detecting information stream.

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Today, Dr. Harry want us to download an app 'MindMeister' and create a mind map based on Chapter 1 in our group and present in front of the class.
Dr. Harry want us to work together in group in creating the mindmap. It is quite challenging because the synchronization of the application is very poor. Sometimes when one make changes in the mindmap, the changes cannot be seen by the others. And also, this is the first time we use this application, we feel that it is very difficult to control the items or elements inside the mindmap.  The positions of the elements will be in a mess when we click something wrong. But I think it is still consider a excellent app if we want to draw a mindmap for revision purpose.
Luckily, we still be able to create a mind map using 'MindMeister' and present in front of the class.
https://www.mindmeister.com/1221691396?t=NlTG1yTsav#

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Today, Dr. Harry told us that we will have formative and summative quiz in our class throughout the semester. Where formative quiz have no carry marks while summative quiz will carry marks. Dr. told us that we have to download a few applications for both of the quiz.
Dr. Harry also told us that we have to do class reflection for every class throughout the semester for this course using 'Padlet'. There are 14 weeks in this semester, every week we have 2 classes which means that we need to have 28 posts for the class reflection.
And in today class, we downloaded 'Quizlet' and learned how to use it. We did 3 set of quiz which are on Multimedia, Multimedia Terminologies and Multimedia Fundamentals Revision to recall basic knowledge about multimedia. All of us have fun in this class.

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The mind map created by our group.

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NETWORKING FUNDAMENTALS

Today Dr. Harry started with Chapter 2 Network Fundamentals Part 1

Types of computer network:

LAN - Local (restricted to a single site) -Wireless (WLAN)

MAN - Metropolitan (banks)

WAN - Wide (entire globe)

PAN - Personal

The activity of drawing diagram of computer networks was carried out.

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The diagrams of types of computer networks drew by every groups.

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The most appropriate answer.

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Then, Dr. also teach about

The network topologies:

Mesh (Best)

Star

Bus

Tree

Ring

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Network topologies diagram

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Today, Dr. Harry continue with Chapter 2 Networking Fundamentals Part II.

Bandwidth(server farm):

- Theoretical  speed
(E.g: 100Mbps)
- Finite

Throughput:

- Actual speed
- Lower than Bandwidth

Data speed ↓ Factors :

1. Distance
2. Weather
3. Area (Urban/Suburb)
4. Types of data transfer
5. Types of cable
[Media transmission]
(Fibre optic is better than
copper)
6. Topologies

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This week,  our class and lab are online based. We need to join the online classes in 'Edpuzzle' and participate the activities provided.
The online class activities are based on Chapter 3 Networking Media. We need to answer questions based on the noted given.

The purpose of the physical layer:

Interconnect the data networks.

FOUR (4) physical layer elements required in order to deliver the frame across the network:

The physical media and associated connectors

A representation of bits on the media.

Encoding of data and control information.

Generate signal that represent the '1' and '0' on the media.

> Signaling represents the physical layer.
> In the OSI layer model, physical and data layers implemented in hardware.

THREE (3) three basic forms of network media on which data is represented:

Copper cable media (Using electric signal)

Fibre optic (Using light pulse signal)

Wireless media (Using microwave )

> Copper cable became the most prominent networking media before the existence of wireless devices because it is inexpensive and can be easily installed for small LAN

100Base-T

100 = speed

Base = Baseband

T = Twisted pair
> Ethernet is a family of computer networking technologies for local area networks (LANs)

THREE (3) types of coaxial cable:

RG-6 – Cable TV

RG58/U – Thin Ethernet

RG8 – Thick Ethernet

> Maximum length for coaxial cable: 500 meters
> 10BASE5 often referred to as Thicknet.
> 10BASE2 often referred to as Thinnet.

Advantages of coaxial cable:

Requires fewer repeaters than twisted pair

Less expensive than fiber

It has been used for many years for many types of data communication, including cable television

Disadvantages of coxial cable:

More expensive and more difficult to install than twisted pair

Needs more room in wiring ducts than twisted pair

TWO (2) types of twisted pair cable:

Shielded

Unshielded

TWO (2) disadvantages of Shielded twisted-pair cable (STP):

More expensive and difficult to install than UTP.

Needs to be grounded at both ends

> RJ-45 connector works for Unshielded twisted-pair cable (UTP)

THREE (3) types of cabling for UTP:

Straight-through

Cross-over

Rollover

The process to make a cable:

Cut a Length of Cable

Strip off the Jacket

Separate the Wires

Untwist the Wires

Organize and Flatten Wires

Clip the Wires

Insert Wires into RJ-45 Plug

Push the Wires In

Inspect the Color Code

CAT5 Termination (568A)

Crimp Down the Wires

Inspect Both Ends

Test the Quality of Cable

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Today, we also done our online class on Edpuzzle. (Topic fibre optic and Wireless)

Fiber optic is primarily installed as the backbone of a network (i.e. between switches and routers).

The range of distance of fibre optic in LAN installation is 200 meters to 2 km.

The core building of fibre optic is glass fibre.

The medium of travel for data in fibre optic cable is light.

Single-mode fibre carries single frequency of light while multimode fibre carries many frequencies of light over a single or many fibres to transmit data.

The refraction during data transmission would cause the loss of part of the light energy of the ray.

The glass shield around the core is cladding.

Every fiber-optic cable used for networking consists of two glass fibers encased in separate sheaths:

- One fiber carries transmitted data from device A to device B.

- The second fiber carries data from device B to device A.

- This provides a full-duplex communication link.

The type of connector most commonly used with multimode fibre is Subscriber Connector (SC connector).

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Today we have an online quiz at online learning on Chapter 1.

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Dr. Harry teaches about Multimedia Info Representation today.

BLOB (Binary Large Object)

3 code designs:

Morse (during war)

- Text > Code > Only receiver can read it.
- Combination of dots and dashes.

ASCII (read MSB first)

EBCDIC

Audio
Quantization (Analog > Digital)

Advantages of digital audio:

Quality better

Less noise

Louder

Easy to transfer

Editable

Disadvantages of digital audio:

Quantization error

Sampling rate>1%, Noise

Graphic/Image

Vector

- Set of number (Formula)
- Formula adjust Quality remains
(Adobe Illustrator)

Bitmap

- Pixel
- Dots
- Quality decrease when image adjusted
(Photoshop)

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Multimedia Data Compression.

3 main reasons:

Large data volume (Size of MM elements)

Relatively slow storage (expensive)

Bandwidth limitation

Compression:

- critical in Multimedia
- performance in data
- reduce size

Codec:

(flv., avi., mp4., mp3., mov.)
mov. - play in Quick

Compression file

- rar. (better, smaller)
- zip.

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My name is Teh Hsueh Wern (253750). I came from Taiping, Perak. Nice to meet you all.
つ^∨^つ

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Network connection - minimum 2 host (node)
Layer 7: Application (Interface)
Layer 6: Presentation
Layer 5: Session (establish & terminate a session)
<on & off> - off for safety
Layer 4: Transport (break into small packets)
Layer 3: Network
Layer 2: Data (Make sure data error free)

Layer 1: Physical (Cable)

Sender ~ Start with Layer 7
Receiver ~ Start with Layer 1

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IEEE is the prime issuer of standards for wireless networks.

802.11b standard represents wi-fi.

Wi-fi stand for high-speed wireless.

FOUR (4) factors of a standard:

1. SPEED

2. RANGE

3. FREQUENCY

4. ACCEPTANCE

Access point - network nodes connected directly to a wired or wireless local area network.

PCMCIA wireless card is built for portable devices.

As a central hub, the range of an access point most commonly, the range will be from 91.44 to 152.4 meters (300 to 500 feet).

PCI adapter is used inside the desktops/PCs to gain access to the wireless network.

TWO (2) topologies specific for the wireless network:

- Infrastructure
- Peer-to-Peer (allows the computers to engage in a wireless communication directly with each other)
The process to configuring the SSID on the access point (AP)

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Today, we have formative and then summative quiz on Chapter 2 Netwoking Fundamentals. Before we have our summative quiz, we do formative quiz using Quizlet and it helps us to revise and refresh back what we have learnt in Chapter 2. Then only we have our summative quiz using Socrative. There are 24 questions in the quiz, including true false, MCQ and structure questions.

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Multimedia Network Communication.

3 aspect:

Network performance

Quality of Service (QS)

Multimedia Transmission

Network Performance Parameter:

Throughput

Throughput= Number of information bit transferred / Time taken to transfer the bits.

Networking delay

- Packetization
- Transmission
- Propagation

Delay variable

Error rate

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Download Quizizz.
Study on multimedia network communication and have quiz.
2 person in a group

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Types of attackers:

Hackers

Criminals

Cyberterrorism

Employees

Types of attacks:

Malicious content

Denial of Service (DoS)

Scanning attack

Security system:

Confidentiality (Access)

Integrity (Edit)

Availability (only available to authorized people)

Authenticity (Verify)

Types of security system:

Secure comunication system

Attack preventation system

* Firewall (guard gate)
* Network Address Translastion        (NAT)
* Intrusion Detection
* Access Permission
* Authentication

Network Security Policy

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Today, we present for our assignment 1. Our group presented on Topic Multimedia Email.

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We have no class due to first day of Ramadhan.

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Today we have our presentation for assignment 2. Our group presented on Topic Multimedia Content Control.

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No physical class. Focus for final exam!

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Online learning.
Updated the progress of NSP project.

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Dr. Harry talk about Network Security Policy which related to our final project (we need to choose one company and do a NSP)

Assets - need the protection of a security policy.

What is NSP?

A living document, never finish, it continuously updated as technology and employee requirement changes.

Purposes of NSP

Provide a baseline

Inform users, staff and employees

Specify mechanisms for security

Users can be organized into 2 audiences:

Internal audience

- Managers & executive
- Departments and business units.
- Technical staff
- End users

External audience

- Partners
- Customers
- Suppliers
- Consultants & contractors

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Edpuzzle on Network Security

Determine the assets that need the protection of a security policy by asking question:-

What do you have that others want?

What processes, data, information system are critical to you, your company, or your organization?

What would stop your company ? organization from doing business or fulfilling its mission?

Purpose of the security policy:

To inform users, staff, and managers

To specify mechanisms for security

To provide a baseline

Why need Security policy?

Protects people and information

Sets the rules for expected behavior

Authorizes staff to monitor, probe, and investigate

Defines the consequences of violations

Security Policy Components

Governing Policy

Technical Policy

End-User Policy

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Quiz on Networking Media
20 questions

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Quiz using Socrative
5 person per group

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Summative quiz using Quizizz on Network Security.
2 person in a group (Total mark divided by 2 and the average mark is for each person)

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Online class on Multimedia Network Application using Edpuzzle.
Multimedia Email

Email containing types of data other than text is called multimedia email. (eg. graphics, audio, video)

MIME (Multimedia/ Multipurpose Internet Mail Extension)

MIME is a standard developed as a set of extensions to SMTP.

SMTP (Simple Mail Trasfer Protocol)

MIME Problem:

- Not everybody can read MIME message
- Computer viruses can be spread using MIME attachment

Streaming
Technology used to deliver content ( audio & video)
The data isn't saved to your device called streaming, while you save offline called download.

Streaming Problem:

- slow or interrupted internet connection
- buffering

IPTV (Internet Protocol Television)

System that use internet technology to deliver TV program.

3 types of IPTV:

Video On Demand (VOD)

Time-shifted IPTV

Live IPTV or IP simulcasting

Video Conference (VC)

Transmission of live video between 2 or more communicating sites.

Aspect of VC:

Full duplex

Half duplex

Simplex

Web Cast

Taking the media and broadcasting it in real time over the internet called live webcast

Benefit of webcast:

Increased revenue

Connect with your audience

Smaller environmental footprint

Quality of Output

Convenience

Richer content

Broadcasting range

Web Services
Open standard based web app that interact with other web app for the purpose of exchanging data. (XML, SOAP, HTML)

Web Services benefit:

Easier to communicate between different app

Easier reuse existing web services instead of writing new ones

Easier to distribute information to more consumers

Rapid development

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Continue working on NSP Project.

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Last class for this semester.
No physical class also.
Thank you Dr. Harry for teaching us for this semester. You're the most interesting lecturer I have ever met, with that sense of humor! XD And also with all those interesting teaching/ learning applications.