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I just go back to UUM because today was public holiday so there have no class. I arrived UUM when time is going around 2PM and I started to clean my room alone. After I clean up my room, it was already 7PM so I go to take a bath and have a dinner with my friends. Before 10PM, I open the Online Learning to check for the courses whether or not having anything. Then, I just realise Multimedia System Networking having a quiz which already end at 12PM and that means I missed it!

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It was the first day starting our lecture with Dr Harry. Our class start with Dr Harry introducing himself and then it’s our turn. Dr Harry had told us about network was not the same with multimedia network with example if we sending text will be faster received by the receiver compare to sending pictures, audio and video. It is because these multimedia elements is too big. Every time when we sending pictures it will be compress which make the picture’s size become smaller and when it successful send to the receiver it will be decompress. Dr Harry said OSI layer and Topology is very important. Dr Harry also told us about fiber optic cabling was made by glass which had been used in Unifi and Unifi is faster than others. Fiber optic cabling cannot bend otherwise it will break. Dr Harry will use 3 ways to in our class such as Face to Face, Blended Learning and Flipped Classroom. Beside that, Dr Harry had simply explain about what we will learn in this course and go through the syllabus. Chapter 2 and 3 is important. There will be 3 assignment that we need to do in this course. Assignment 1 and 2 will be presentation and assignment 3 will ask us to write a documentation about the network security policy based on the different department such as police station, hospital and so on. Dr Harry also said there will be a lot of quiz for us so Dr Harry can choose the highest one and put in our carry marks. After that, Dr Harry had ask us to install 3 application which are Padlet, Quizlet and HP Reveal. Padlet will be used to write class reflection after every session for 14 weeks so that means there will be have 28 class reflection in this semester. Quizlet will be used to quiz and practice while the HP Reveal had used the Augmented Reality(AR) which have 2D and 3D but HP Reveal only have 2D.

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Today, I wake up very early even though today was public holiday too because Dr Harry had open the quiz on Online Learning at 8.30AM until 12.00PM. I do the quiz at home because I had go back to my hometown. I wake up to read the note chapter 1 which had been given by Dr Harry on Online Learning. After I finish my study, I start the quiz and there have 10 questions which are in structure. I answer all of them and submit the quiz before the time is up.

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Dr Harry had start chapter 1 with title Introduction to Networking today. The importance of network is allow source sharing and enable users communicate with each others. BLOB which stands for binary large object is a data type that can store binary data and is a large file. Binary large object used to store video, animation, 3D animation, pictures and others multimedia elements that are bigger size. Multimedia elements such as video and animation that have movement will be the heavy one and they need special kind of network which are multimedia network to send to the others. Network is like the parents of multimedia network but efficiency of multimedia network was better than network. Network can only use to send text but multimedia network can use to send all the multimedia elements. There have 5 types of network which are Internet, Telcos, Company network, Universal network and Home network. Characteristics of network type are important and that consists six of them which are administration, redundancy/stability, service quality, monitoring, standards and operator. There are different between monitoring and stability. Host is device such as PC or smartphone and there are no IP address that are the same which means each of the IP address are unique. There will be host name for each IP address and DNS use to match the IP address and host name then bring users to the proper website. Standard is like a program, if we don’t have standard, Iphone cannot communicate with Android or Asus just can communicate with Asus only. Iphone implement the proprietary so it cannot share its things with other device except its own brand. Dr Harry had told about the assignment 1 and let us find our groupmates. After that, we sign up for Padlet and Quizlet. Dr Harry let us try the quizlet live in class and I though it was really interesting that the group members had to discuss about the question and there have some choice of different answer on everyone smartphone.

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Today, Dr Harry had continue to the chapter two which is Networking Basic CCNA 1. Dr Harry told that Macintosh is the first operating system that appear and the reason why the Windows and the Android system cannot get on the iOS system is because the creation of windows and android was steal from the Apple. Apple is more suitable for multimedia design while Android is suitable for programming. Apple are difficult to attack by the virus because Apple will show the virus file extension such as .exe which can attack Windows. Windows Vista have beautiful interface which make it become heavy. Host at least have two and server have firewall which is bigger to protect it from attack. Intermediate devices is use to send the data and make sure the information was send to others safely. Internetworks is the creation of combine a lot of LAN and WAN. Network topology is the arrangement of the elements like links, nodes of a communication network. There are 5 types of topology which is fully connected topology, star topology, mesh topology, ring topology and bus topology. We had discuss with our group members for every topology. After we had discuss, we had known the arrangement each of them and the best topology is star topology which its server is at the centre and it does not affect the entire network although there are single failure.

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Dr Harry had giving us a review about nodes are devices which include in arrangement of network such as computer, smartphone and the others. Star topology make everyone have equal chances to receive the data such as note and file faster. After that, Dr Harry had explain about bandwidth and throughput. In general, they have same meaning which is how fast actually the internet connection but in detail they are different. Difference between bandwidth and throughput is bandwidth means maximum data that can travel through a channel while throughput means the actual data does travel through the channel successfully. The reasons why cause throughput is many users subscribed to same server which can also refer as network congestion (traffic). Next, the devices, weather and cable can also cause the throughput. Glass transfer data through light. Open System Interconnection (OSI) reference model will show what happens when you use the internet. OSI must start from the most above layers such as there have 7 layers that means we need to start from the layer 7 but not layer 1. It must be go one by one cannot skip. Layer 7 Application layer show the user interface such as wechat, whatapps and the others. Layer 6 Presentation layer change to the format which can be understand by people. Layer 5 Session layer open or close the session. It use to prevent hack by the hacker and bluetrips is one of the session layers. Layer 4 Transport layer is validation and security which make sure no error and stay in good condition. Layer 3 Network layer give the way which is the best and faster. Layer 2 Data Link layer ensure data did not have error and data is send to the person exactly. Layer 1 Physical layer ensure data that already send to the receiver. Data encapsulation describe the process of putting headers around some data. Headers use for link back the data which had been sliced in little pieces.

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Today we having our online class in Edpuzzle. This is my first time to participate Edpuzzle’s class. There have 4 assignment have been post on there all of them are Chapter 4 and Chapter 5 Networking Media Wireless and one of them are Chapter 3 with the OSI layers. I just realised that I still have some part that I did not really understand when there have question need to answer for it. So I need to do more revision and prepare for the online quiz that have been mentioned by Dr Harry which will implement on next class.

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We have online quiz in Online Learning that replace our lab class today. Dr Harry had prepared 20 objective question to fill in the blank and true or false. They all from the chapter that we had study during the online class. I wake up early to do the quiz because I think I will need lot of times to do it but I finish it early than I thought. The quiz is a good review for what I have been study on the previous online class.

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Today we have learn about Network Security which its purpose is to ensure network in a company is safe by confirm what it can do and what cannot do for the hardware and software. Security must be update time from time. Security Policy components have 3 which is Governing Policy, End-User Policy and Technical Policy. Governing Policy is high level treatment which decide what kind of level that can access any kind of information. End-User Policy such as password that need to be construct by alphabets and numbers. Technical Policy had related to hardware and software which decide what type of firewall used, what should do when firewall being attacked, the firewall need to be updated and so on. Repeater is an device that receives signal and transmits it and it use to extend transmissions so that the signal can cover longer distances or be received on the other side of an obstruction. In other words, it can strongest the slowly network.  Before the end of class, Dr Harry had ask us to bring 3 pictures and 3 videos each of a group that related to copper media, fiber optic and wireless media next class.

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Today we had bring the pictures and videos that we had found to the class. Dr Harry had teach us how to use HP Reveal to create the Augmented Reality (AR) in 2D. We used the video to overlap on the picture for one Auras. After completed the Auras, we can use our mobile to scan the picture in the computer screen or the picture that had been printed on paper. When we scan it, it will play the video that had overlay on the picture and it call Augmented Reality. It is the first time I doing this and it is very interesting and fun.

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Today is mid semester break so there did not have any activity for MM Networking.

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Today is the day during the mid-semester break, so there does not have any activity by Networking.

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Today, we have our online class about topic Network Security Project in Edpuzzle. There have 21 questions about the topic that we need to answer one by one. Although Dr Harry had given us the time to participate in the online class, which the due date is until 22 October 2018 but I still participate and complete it today.

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Today, we having our online quiz for topic Networking Security Project in UUM Online Quiz. The quiz’s duration is from 8.30 AM until 12.00PM and I wake up on time to answer the quiz properly. There have 5 questions and all of the questions is in structure form. Some question that I have no idea that I had read in the note in Edpuzzle. So, I try my best and use my own idea to answer it.

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We had our chapter 6 Multimedia Info Representation today. Multimedia information can be refer as multimedia elements and multimedia elements have text, audio, video, graphic, animation and one more which I did not know before is interactivity element. Moving image include videos and animations. When we send any multimedia information to others, the multimedia information need to code because it can send faster and to ensure the security of sending information. Dr Harry asked about which will be more secure if we compare to wireless and wired and the answer is wired. This is because wired had insulator that use to prevent from electric shock and to prevent from hacking. So it will be more secure than wireless. Wireless send information through microwave signal and there no have protection on the microwave. After that, we had talk about morse code and Dr Harry ask us to create the words using morse code and pass to others to decode it. And we had also talk about ASCII and EBCDIC. Audio coding had ACD and DAC and the process of two of them are call as PCM. Audio have two types which is analog and digital. Although CD and DVD those store the audio in digital form but when we play it, it will turn to become analog. High sampling rate and sampling resolution will make the audio file become bigger. Quantization error is the difference between the analog signal and the closest available digital value at each sampling instant from the A/D converter. Higher bit will have smaller error. Vector mostly are in cartoon and they did not have photo that are realistic. Besides, player in Malaysia is PAL standard and it can only code PAL so if we want to use it to code NTSC that cannot be play unless the player is region free.

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Today, Dr Harry had let us do the Quizlet many times. We find our group members for doing the Quizlet before begin every sessions. I feel very interesting and fun when doing the Quizlet every time. After that, we had our new way to do quiz which is Socrative. It will be a different from Quizlet. Dr Harry had said next class will be doing the quiz by using Socrative as individual and the marks will be recorded.

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Today, Dr Harry had talk about Multimedia Data Compression. When we doing the compression, it will throwing bits that are redundancy which means the same. At the same time, the quality for the multimedia elements such as images will drop compare to the original one. It will keep on drop the quality of images if we sending the same images again and again. The main reasons have data compression is large data volume, relatively slow storage and bandwidth limitation. Bandwidth is the speed of network based on theoretical while throughput is the speed of network based on reality. Real time is like live and YouTube and there will have buffering when we watch YouTube because the compression of video not good, and it will stop at halfway on the way to the receiver. Next, we go through the compression categories and techniques. Data source is data from sender while data sink is data received by receiver. Compressor/Coder will reduce the data and send to the receiver while Expander/Decoder will regenerated data compression and the quality will drop. Entropy compression is semantic independent and it is lossless while Source compression is semantic dependent and it is lossy or lossless. Lossless is what had been send will be received actually the same while lossy is the data will be loss and quality will drop. Semantic is meaning. Entropy use for compression of code and program such as java while Source use for compression of video and audio. Entropy compression data source must equal to data sink which means lossless because the code of a program cannot lost either one part. Techniques of Entropy is Repetitive Sequence and Statistical while techniques of Source is Vector Quantization, Differential and Transform-Based. Repetitive Sequence will compress the data that are redundancy most. Statistical will have code-book to use the code words such as &M, &S, &N, &MSN which is Multimedia, System, Networking and Multimedia System Networking. Code-book have to for data source and data sink to compress and decompress. (~) symbol in bracket call Tilde. Differential is just compress the value that is different. Error term and prediction difference is the value that is different between the actual value which also can be call as sample value and predicted value. It do not compress full value of data sample. Transform-Based use to compress audio and video which the data sink nearly same with original but not completely. More significant is compress with greater accuracy while less significant compress less accuracy or neglected. Regenerated means the data have been compress.

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Today, we have our quiz in the class by using the Socrative. We start our quiz with chapter Multimedia Data Compression by individual. There have 20 questions which have multiple choice and also the fill in questions. We had end this individual session at 9.30AM. After that, we continue with the group session with chapter Multimedia Info Representation and also the Network Security. There have 30 questions and each member can discuss with each other but the marks will still count by individual. And we end our class after we finish the two session.

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Today, I have been late to attend the class. Dr Harry had start the class when I reach there and it’s really made me feel sorry about it. By the way, I just too rush and cannot calm down to understand what have been taught by Dr Harry. So I just try to write down what have been said by Dr Harry and understand it. Dt Harry had going to topic Network Performance Parameters. Delay Variance can also be called as delay jitter and it is worse than normal delay for multimedia traffic. It will be cause by the condition of weather especially rainy day. Error rate had 3 which is Bit Error Rate(BER), Packet Error Rate/Cell Error Rate(PER/CER) and Packet Loss Rate/Cell Loss Rate(PLR/CLR). BER means that every bits that had been send got error. PLR/CLR means the data will disappear straight away and not received by the receiver so there will have Retransmission Protocol to ensure all packets arrive and received by the receiver to prevent this error from being happened. Next, we will go through the Quality of Service(QOS) which means the quality multimedia network. There will have 5 oriented to see identify the quality of service. Performance oriented ensure delay must be low while Format-oriented ensure the video resolution, frame rate, storage format and compression scheme are higher. Synchronization-oriented means the video and the audio must be sync at the same time there will not be video first and then audio just come out. Cost-oriented ensure charges and copyright fees are lower while User-oriented will review subjective image and sound quality based on perspective of user. In the QOS there will be perspective part which have User, Application and Transmission. User will have image size, color depth, voice quality and steady picture while Application will have SAS factors such as delay, jitter, skew and error rate. Transmission will have (NPP’s) such as throughput, networking delay, delay variance and error rate. Response time is user perspective and application perspective which if the application low the delay will happened and user perspective will have quality worse for video and audio. Every domain will have the QOS such as hotel and so on. Burstiness is the characteristic of communications involving data that is transmitted intermittently which means the second packets will be send when the first had arrived. In bursts, it’s rather than as a continuous stream. Soprano has the highest vocal range of all voice types which use for those female with highest singing voice. Tenor is classical male singing voice and the vocal range is normally the highest male voice type while Falsetto is a male singing voice that’s unusually high.

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We have no class today because Dr Harry had involve with the convocation but every group leader need to post the assignment progress to the Online Learning because Dr Harry will be taking attendance with that.

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Today we have discuss about Network Security which is the last chapter. There have 4 types of attackers which is hackers, criminals, cyberterrorism and employees. Hackers mostly hack for fun, as profit, protest, challenges and enjoyment. There also have company that hire hackers to evaluate the weaknesses in their system to assist in removing them. Criminals will hack for certain purpose such as steal credit cards numbers while cyberterrorism is means to information warfare. Employees also can be the attacker because they have internal access control and knowledge of the organization systems. Gibberish is the received message that are not meaningful. Types of attack have 3 which is malicious content, denial-of-service (DOS) attack and scanning attack. DOS is a attack that hackers will make until the owner of certain system or application such as email cannot access to his/her own email. Scanning attack will use IP address to hack and IP address is one of the gateway for people to break in. It can be reverse back and know the hacker. Security system have 4 which is confidentiality, integrity, availability and authenticity. Confidentiality can be assessable by authorized people while integrity means modification by authorized people. Availability means data only available to authorized people while authenticity means a host can verify the identity of user. Secure communication system will protect the message communication between two devices and prevent it attacke by eavesdroppers. Attack prevention system have firewall, Network Address Translation (NAT), Intrusion Detection, Access Permission, antivirus, password, TAC code and others used to stop attackers from hacking. Firewall can be a system or application and there will have sniffers who are people try to get IP address. NAT will translate IP address to prevent others know it. Access permission can put password on certain files. Networking security policy also be type of security system. Encryption for confidentiality will transform message into bit that attackers cannot read. Virtual Private Network(VPN) protect inclusion from outside for a certain network. There have several types of authentication which is password, digital signature, biometric and smartcard. Password had divided into text password and graphical password while biometric had 3 which is fingerprint, iris identification and face recognition. Digital certificate is an electronic document used to prove the ownership of a public key by the applicant with a lock icon. Lock icon which have open means that website did not have certificate and maybe have risk in it.

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Today we having our last quiz in the lab. We use Socrative  to do the quiz which include topic Multimedia Data Compression, Multimedia Network Communication and Network Security in group. Dr Harry had start the quiz around 9AM and give us answer the quiz until 10AM because there have 50 questions that need to be answer. So Dr Harry just make sure that the time is appropriate for everyone to finish answering their quiz and have their discussion with the group mate.

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Dr Harry had told that today did not have any class because Dr give us time to prepare our presentation for this Wednesday. However, some of us still go class at 9AM because there have others group who want to present today. The presentation just begin to start at about 10AM because have meet some problems. I just listen the things try to explain by the group. After they finish their presentation, Dr Harry had let us ask questions and lastly Dr ask by his own. I just hoping that our group can answer every questions correctly which had been asked by Dr or others friends.

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Today, we go to class for presentation. There will have 3 groups who need to present today and our group is the second group. However, we present as the first group because we had ready and at the same time the first group members did not reach yet. We present all the things we know and learn from the Google and try to explain it in our own words. Dr Harry had ask questions and we try to answer it as much as we can.

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Today we have no class and we use the time to prepare our assignment 2 which will be present on the next Wednesday.

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Today we did not have class and we use the time to discuss our assignment 2 and do the slide which will be present on the next Wednesday.

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Today we have no class and my group leader have made an appointment with Dr Harry to consultant about our presentation slide. We had meet with Dr Harry at around 10AM and know which part can be improve and what should be notice about. We need to prepare well to have a good presentation this Wednesday.

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Today, it is our last class and we had our assignment 2 presentation. There also will have only three groups to present for. Same as presentation assignment 1, we be the first group to present our assignment 2 with title IoT. I am very nervous until something I want to explain cannot explain it well. After we had finish our presentation, Dr Harry had ask some questions that related to our presentation.