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Conclusion
Thank you for all who help me a lot in this course and also thank you to our lecturer, Mr Harry. Good luck to the final exam. Bye...

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Class 26: Reflection
Today also is a presentation day but not our group, is the other 4 group. It all for the class and we have to face the final exam soon.

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Class 25: Reflection
Today is our presentation day for assignment 2. We will have 4 group presentation today and all of us manage to present on time.

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Class 24: Reflection
Today, again we have no physical class, but change to online. So, we take time to do our project.

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Class 23: Reflection
Today, our class change to online because Mr Harry give us time to do our project, NSP. We go to Mr Harry's room and ask for our project.

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Class 22: Reflection
This day also is the presentation day for the other four group and sir also remind us the project.

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Class 21: Reflection
Today, we have a presentation on our Assignment 1, but since our class clash to the time for the election, we start our class about 1 pm. And the time only enough for three group to present, I am one of the three group. After the three group present, the class end.

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Class 20: Reflection
Today, we have the quiz that include three chapter which are the compression, network communication and network security for group that using socrative. There are total of 50 questions and I get 49/50 just because the spelling. I know the answer but I am careless, when I noticed that is is wrong, I ever don't know why. Then, the members beside me told me that maybe the spelling wrong

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Class 19: Reflection
Today, we learn about the network security that included types of attackers, types of attacks, types of security system, attack prevention system, authentication, digital certificate, and encryption. However, about the encryption, we already learned before, so Mr Harry skip it. For the types of attackers, it contains hackers for enjoyment purpose, criminals for money purpose, cyber terrorism, and employees.

Malicious element, Denial-of-Service (DoS) attack, scanning attack are the types of attack. Malicious elements are the viruses, worms, trojan horse and spam whereas the scanning attack use IP address to attack. For the DoS attack, the example is the e-mail, the owner cannot access because the password is being changed by the others, but it is difficult in today.

Whereas for the types of security system, the requirements to prevent attack are confidentiality, integrity, availability, and authenticity. The types for it are secure communication system, attack prevention system like firewall, and network security policy (NSP). Eavesdroppers in the secure communication system is between the process of sending information to the receivers. For example, UUMIT is the eavesdroppers, that they check and prevent the bad things from being spreading.

Attack prevention system have 5 elements which are firewall, network address translation (NAT), intrustion detection, and access permission. Firewall acts as a guard gate whereas the NAT prevent the attack by translate the IP address to a word such as www.google.com and the people who steal the IP address called sniffers. Intrustion detection is a device or software application that monitors a network or systems for malicious activity or policy violations. For example, anti-virus.

Authentication used to protect the private information for our own such as text or graphic password, digital signatures, biometric, and smart card. Digital Certificate is related to the digital signatures under the authentication and it is an electronic document that used to proved the ownership of a public key by applicant.

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Class 18: Reflection
Today is online class. The group leaders should update the progress of assignment 1 and 2 and the students have to answer two little questions for the progress of the two assignment.

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Class 17: Reflection
Today, we learned about the Multimedia Network Communication. There are 3 important aspects in this chapter, that are Network Performance Parameters (NPPs), Quality of Service (QoS) and Multimedia Transmission. For the NPPs, there are 4 parameters, throughput, network delay, delay variance, and error rate. For the networking delay, there are some details we need to know such as packetization, transmission, and propagation while for the error rate are bit error rate (BER), packet error rate or cell error rate (PER/CER), and packet loss rate or cell loss rate (PLR/CLR). Whereas for the QoS, there are 5 categories which are performance-oriented, format-oriented, synchronization-oriented, cost-oriented, and user-oriented. Last, for the Multimedia Transmission, it depends on the real-time or retrieved from storage device (delay time) and types of receivers. In the types of receivers, consist of two types, human being-requirements and computer-requirements.We need to know about the details of the requirements such as response of the human ears and eyes, tolerance to error, tolerance to delay and jitter, and lip-synchronization.

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Class 16: Reflection
Today, we have quizzes in socrative and one quiz is solo and another one is in group. For the solo quiz is about the data compression chapter and I am ok with the multiple choices but the short answer is a bit difficult to me. For the group, although it is the same questions as last week, but I forget the answers for the true false question, and thus, I got a no improvement mark that is 80% same with the last week. I ask Mr Harry for the previous quiz will take mark or not because I got a nice mark for it and sir said he will check it. That's all for today.

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Class 15: Reflection
Today, Mr Harry teaches about multimedia data compression. There are three main reasons that needed to compress: large data volume, relatively slow storage, and bandwidth limitation. Data send by the sender called data source and the receiver called data sink and in the process, we need device such as compressor/coder and expander/decoder. Besides, the compression also is about the lossy and lossless.

There are two categories for the data compression which are entropy and source. For the entropy, there are two techniques involved, that are repetitive sequence and statistical. Whereas for the sources, there are three types of techniques, which include vector quantization, differential, and transform-based. Repetitive sequence is about the using special character such as hashtag (#) and ampersand (&) to represent the repeating bits whereas the statistical using the code book to code words.

For the vector quantization, differential, and transform-based, they are like mathematics, just about replace and subtract, somethings like this. But need to be vary careful in the vector quantization, because the position is very important. Transform-based technique is which it compress by identifying the components that are more significant than others, meaning that it will neglect the less significant one. Thus, when the data regenerated, it will match to the original data but not complete.

That's all about it and we need to have a socrative solo in the Thursday lab, not only for this chapter, but also including the network policy and multimedia information representation.

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Class 14: Reflection
Today, Mr Harry assigned us to do quiz and activity in group by using quizlet and socrative. The quizlet is formative and the socrative is summative.  The quiz and activity is about the network policy and multimedia information representation. We play about 4 times in the quizlet and I win 3 out of 4 times. :) Then, Mr Harry assigned us to do the quiz in socrative. This time, I just get 24 out of 30 questions since I am a little bit careless that is no see the questions completely and carefully. Fortunately, at last, Mr Harry said that the result will not be count, meaning that he is giving chance to us. After that, the class dismissed and I am going back home again with my friend.

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Class 13: Reflection
Today. the devices in the classroom are not function well. So, Mr Harry uses the traditional method to conduct the class, that is using the whiteboard and marker. The chapter that discuss today is the Multimedia Information Representation. It's all about the 5 multimedia elements, text, audio, still image, and moving image (video and animation). The difference between still and moving image is still image does not tied to the time whereas moving image tied to the time.

There are three type for the textual coding, Morse (IMC), ASCII, and EBCDIC. Morse is a combination of dots and dashes whereas the ASCII and EBCDIC use binary digit, meaning that these two can be decoded by using MSB + LSB in a table form. MSB is most significant bit whereas LSB is least significant bit. The main reason that need to code is security.

For the audio coding, there are two type, analog and digital. The devices included are Audio-to-Digital Converter (ADC) and Digital-to-Audio Converter (DAC). Technic that used is Pulse Code Modulation (PCM) and the process of the convert called Quantization. The convert process must appears Quantization Error (QE) and this rely to the sampling rate and sampling resolution. Mr Harry also discuss about the advantages and disadvantages of analog and digital code.

Still image coding include two form, vector and raster scan (bitmap). Vector image created by using line shape and math equation whereas raster scan use PEL and PIX (pixel). Raster scan unit: P*S or using dpi (dot per inch).

For the moving image coding, the TV transmission uses three format, NTSC for US area, SECAM for Europe area and PEL for Asia area. We can use region free tool but it is expensive. The encoding scheme for digital pictures are composite and component. Nowadays, we use component for the HDTV. Composite is for the old fashion TV, the big and heavy one.

This is what I learn today. See you in Thursday.

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Class 12: Reflection
Today, also don't have physical class but we have quiz on the UUM online quiz. The quiz is about the network policy and it is quite difficult to me. Fortunately the class is online because I'm a little bit sick and is going to be sick. :(

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Class 11: Reflection
Today is the coronation day of Sultan Kedah, so is a public holiday to us, mean no physical class today. Since the government changed the rule, so we have online activity although it is public holiday. Mr Harry assigned us to do the activity at EdPuzzle and it is about the network policy.

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Class 10: Refiection
Today, Mr Harry let us to explore the hp reveal application. At the last class, Mr Harry wanted us to prepare the 3 images and video about the copper cable, fiber optic and wireless networking media to use in the hp reveal. Basically, it is about trigger and overlay. We use the videos to overlay in the images, means that when we scan the images, we can get the videos, some kind like the QR code. However, I think that the hp reveal has an limitation, that is we need to use the account that person who create the aura, then we just can scan the image and the video will come out. If we do not use their account, then it will be continuously scanning without appear the video. Mr Harry showed us how to used it, then we gonna do it for the 3 images and 3 videos. Besides, we need to lock it so that when we scan the images, we can leave the images and the videos still going although we move the smartphone out of the images. After that, Mr Harry want us to create one aura one group and make sure the other people also can launching it. then, the class dismiss and I go back home with my friends and the semester break is on!!!

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Class 9: Reflection
Today, Mr Harry explain to us about our project that is related to the chapter 9, network security. Because our project is related with chapter 9, so today we learnt about chapter 9 instead of following the sequence of chapter. Mr Harry explain to us what is network security and its components which are governing security policy, end user security policy and technical security policy. It's is a bit confusing but Mr Harry said he will give us example and guide us to do the project. Besides, Mr Harry also want us to find the image and video of the 3 networking medias, that are copper, fiber optic and wireless in the next coming lab class. Finally, he also inform us to write down the topic for the assignment 2 and it is first comes first serve.

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Class 8: Reflection
Today, also same with the last class, we don't have the physical class but we have a online quiz in the online learning. The quiz is about the networking media, the chapter that have been taught at the EdPuzzle. The quiz consists of 20 questions and Mr Harry give us an hours to finish it. I start my quiz at about 2 o'clock because I choose to wash my clothes first although it is a raining day. Since we have learn this chapter at the EdPuzzle, the questions is not so difficult to me (maybe is harder for the other person, I don't know). Finally, I get the final result 20 out of 20. I am so happy with the result. That's the end of today's online class.

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Class 7: Reflection
Sorry for a litle bit late submission to class reflection because we have no physical class on yesterday since I have a bit of forgetful because of not seeing sir's face and not hearing sir's voice, I almost accidentally forget this class refection. Also, I am "gila" doing the literature review for my Project 1. The literature review is quite difficult to do and I spend a lot of time scratching my head to do it. So, for the next class of reflection, also don't have physical class, I will do the reminder to avoid me from forgetting the reflection. Talk back to this reflection, we learn the new chapter online on Edpuzzle. It is a new experience since I never uses Edpuzzle, but I think this application is not so good as it mark the answer strictly. It mark my answer as wrong although I gives the same answer but with some extra words.

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Class 6: Reflection
Today, Mr Harry continued to teach us chapter 2 as I mentioned in the class 5 reflection at below. Mr Harry explain to us about the difference between bandwidth and throughput, the (Open System Interconnection) OSI Reference Model. OSI Reference Model contain 7 layers and the first layer is physical layer, then, data link layer, network layer, transport layer continue with session layer, presentation layer and the last is application layer. But this model start at the last layer that is application layer to the first layer, physical layer. Before end the class, Mr Harry wanted us to download one app called Socrative for student and also keep telling us the next class is online class. So, we need to join the Edpuzzle that given in the online learning next class. After that, the class dismised.

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Class 5: Reflection
Today, we learn about chapter 2, Networking Basics. Mr Harry split the lesson into 2, one is learned by today and another is on the next class. So, the things that I have learnt today is components of network, end devices and its roles, intermediary devices, types of media, intranet and network topology. After the teaching process, Mr Harry wanted us to sit in the group and discuss what is network topology and which is the best. Basically, we have 5 network topology and each of us in the group take one. After that, Mr Harry want us to draw the network topology on the whiteboard. Then, Mr Harry said that the star topology is the best one. Finally, because of one of the student ask about the hacker write the virus program to hack into Apple products, Mr Harry frightened us by saying this is our assignment. Fortunately this is only a joke but Mr Harry wanted all of us to brainstorming about this question.

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Class 4: Reflection
Today, we have a flipped classroom. Mr Harry give us quiz through quizlet, but before started the quiz, Mr Harry give us some time to read. The quiz is about chapter 1, introduction to networking. After reading, we have a quiz by group which contain 4 members. Our result is not so good, but fortunately Mr Harry said that he will do many time quiz like this, so we do not have to worry. After this quiz, Mr Harry give us individual quiz. This time, my result is good, I get a result 17 out of 18 that is 94%. I think this is because the quiz previously had impressed me about those keyword. After Mr Harry get our individual quiz's result, the class finish and I am going back to hostel to wash my clothes.

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Class 3: Reflection
Today, we learn about chapter 1, introduction to networking. From that, we know about the network definition, network standard, multimedia network definition, multimedia system and multimedia content. After the teaching process, Mr Harry wants all of us divided into 5 people in a group for the assignment and project purposes. After that, Mr Harry explain to us what we have to do in the assignment 1 and the rubric for it. Then, the class dismisses and I go to have lunch with my friend.

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Chong Chia Ye (244924)
Class 2: Reflection
Today, Mr Harry gives us time to do reflection of the first class using padlet. After that, Mr Harry test us about multimedia elements using quizlet. Quizlet seperate us to many groups and I am in the unicorn group. At first, we didn't understand how quizlet functions but we explore it through the process of answering the questions. Finally, our group, unicorn be the first place in the test and the class dismisses. Then, I go back home with my friend.

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Chong Chia Ye (244924)
Class 1: Reflection
Today, Mr Harry briefly explain what we have to learn about this semester in multimedia system networking class. We have blended learning and flipped classroom throughout the semester. Mr Harry also introduces us about hp reveal that can make us easier to do the augmented reality or 2D. Because this is the first day of the class and there is not many people comes to the class, the class dismisses early and I can take my time to have my lunch with my friend.