ITCC-101-Module-1-Lesson-3.pdf

Lesson 3 The Internet, Web and Electric Commerce Objectives: On completion of this module, you will learn to … - Differentiate the common uses of Internet and Web - Explain the gaining in accessing the Internet Lesson 3:...

Lesson 3 The Internet, Web and Electric Commerce Objectives: On completion of this module, you will learn to … - Differentiate the common uses of Internet and Web - Explain the gaining in accessing the Internet Lesson 3: The Internet, Web and College of Information Technology Electronic Commerce DMMMSU - MLUC  Internet – It is the actual network that is made up of wires, cables, satellites, and rules for exchanging information between computers connected to the network (being online). – Connects millions of computers throughout the world. Web – A multimedia interface to the resources available on the internet. Common uses of Internet and Web: Communicating – You can exchange e-mail, photos, and videos with your family and friend from almost anywhere in the world. Shopping – You can window shop, look for the latest fashions, search for bargains, and make purchases. Searching – You can access some of the world’s largest libraries directly from your home computer. – You can find the latest local, national, and international news. Education or e-learning – You can take classes on almost any subject. Entertainment – You can find music, movies, magazines, and computer games. What do you need to gain access to the internet? A. Providers The most common way to access the internet is through an Internet Service Provider (ISP). o The providers are already connected to the internet and provide a path or connection for individuals to access the internet. The most widely used commercial ISP use telephone lines, cable, and/or wireless connections. Some of the well-known providers are PLDT/Smart/Sun Cellular, Globe, Eastern Telecoms, Bayantel and Sky Broadband. Lesson 3: The Internet, Web and College of Information Technology Electronic Commerce DMMMSU - MLUC  B. Browsers Browsers are programs that provide access to web resources. It allows you to explore or to surf the web by easily moving from one website to another. Some of the well-known browsers are Google Chrome, Mozilla Firefox, MS Internet Explorer and Apple Safari. C. Uniform Resource Locators (URL) It is the address of a specific webpage or file on the internet. For browser to connect to the resources, the location or address of the resource must be specified. Two (2) basic parts of URL: Protocol – Used to connect to the resource. – HTTP is used for web traffic and is the most widely used internet protocol. Domain Name – It indicates the specific address where the resource is located. – The last part of the domain name following the dot is the top-level domain (TLD). Also known as web suffix. Types of Top-level Domains Lesson 3: The Internet, Web and College of Information Technology Electronic Commerce DMMMSU - MLUC  HTML and Web Pages Hypertext Markup Language (HTML) – A markup language for displaying web pages. – Once the browser has connected to the website, a document typically contains HTML. Web pages – Present information about the site along with the references and hyperlinks or links that connect to other documents containing related information. Text files Graphic images Audio Video Clips Search Engines Cloud Computing Cloud Computing can be defined as delivering computing power( CPU, RAM, Network Speeds, Storage OS software) a service over a network (usually on the internet) rather than physically having the computing resources at the customer location. Example: AWS, Azure, Google Cloud Example of cloud computing Whenever you travel through a bus or train, you take a ticket for your destination and hold back to your seat till you reach your destination. Likewise Lesson 3: The Internet, Web and College of Information Technology Electronic Commerce DMMMSU - MLUC  other passengers also takes ticket and travel in the same bus with you and it hardly bothers you where they go. When your stop comes you get off the bus thanking the driver. Cloud computing is just like that bus, carrying data and information for different users and allows to use its service with minimal cost. Why the Name Cloud? The term “Cloud” came from a network design that was used by network engineers to represent the location of various network devices and there inter-connection. The shape of this network design was like a cloud. Benefits of cloud computing: 1. Lower IT infrastructure and computer costs for users 2. Improved performance 3. Fewer Maintenance issues 4. Instant software updates 5. Improved compatibility between Operating systems 6. Backup and recovery 7. Performance and Scalability 8. Increased storage capacity 9. Increase data safety Types of Clouds There are four different cloud models that you can subscribe according to business needs: 1. Private Cloud: Computing resources are deployed for one particular organization. This method is more used for intra-business interactions. Where the computing resources can be governed, owned and operated by the same organization. 2. Community Cloud: Computing resources are provided for a community and organizations. 3. Public Cloud: This type of cloud is used usually for B2C (Business to Consumer) type interactions. Here the computing resource is owned, governed and operated by government, an academic or business organization. 4. Hybrid Cloud: This type of cloud can be used for both type of interactions - B2B (Business to Business) or B2C ( Business to Consumer). This deployment method is called hybrid cloud as the computing resources are bound together by different clouds. Internet of Things (IoT) Internet of Things(IoT) is a network of physical objects or people called "things" that are embedded with software, electronics, network, and sensors that allows these objects to collect and exchange data. Lesson 3: The Internet, Web and College of Information Technology Electronic Commerce DMMMSU - MLUC  The goal of IoT is to extend to internet connectivity from standard devices like computer, mobile, tablet to relatively dumb devices like a toaster. IoT makes virtually everything "smart," by improving aspects of our life with the power of data collection, AI algorithm, and networks. Four fundamental components of an IoT system: 1. Sensors/Devices: Sensors or devices are a key component that helps you to collect live data from the surrounding environment. All this data may have various levels of complexities. It could be a simple temperature monitoring sensor, or it may be in the form of the video feed. A device may have various types of sensors which performs multiple tasks apart from sensing. o Example, A mobile phone is a device which has multiple sensors like GPS, camera but your smartphone is not able to sense these things. 2. Connectivity: All the collected data is sent to a cloud infrastructure. The sensors should be connected to the cloud using various mediums of communications. o These communication mediums include mobile or satellite networks, Bluetooth, WI-FI, WAN, etc. 3. Data Processing: Once that data is collected, and it gets to the cloud, the software performs processing on the gathered data. This process can be just checking the temperature, reading on devices like AC or heaters. 4. User Interface: The information needs to be available to the end-user in some way which can be achieved by triggering alarms on their phones or sending them notification through email or text message. The user sometimes might need an interface which actively checks their IOT system. o For example, the user has a camera installed in his home. He wants to access video recording and all the feeds with the help of a web server. Challenges of IoT Insufficient testing and updating Concern regarding data security and privacy Software complexity Data volumes and interpretation Integration with AI and automation Devices require a constant power supply which is difficult Interaction and short-range communication Key benefits of IoT technology Technical Optimization: IoT technology helps a lot in improving technologies and making them better. Example, with IoT, a manufacturer is able to collect data from various car sensors. The manufacturer analyzes them to improve its design and make them more efficient. Improved Data Collection: Traditional data collection has its limitations and its design for passive use. IoT facilitates immediate action on data. Lesson 3: The Internet, Web and College of Information Technology Electronic Commerce DMMMSU - MLUC  Reduced Waste: IoT offers real-time information leading to effective decision making & management of resources. For example, if a manufacturer finds an issue in multiple car engines, he can track the manufacturing plan of those engines and solves this issue with the manufacturing belt. Improved Customer Engagement: IoT allows you to improve customer experience by detecting problems and improving the process. Disadvantages IOT Security: IoT technology creates an ecosystem of connected devices. However, during this process, the system may offer little authentication control despite sufficient security measures. Privacy: The use of IOT, exposes a substantial amount of personal data, in extreme detail, without the user's active participation. This creates lots of privacy issues. Flexibility: There is a huge concern regarding the flexibility of an IoT system. It is mainly regarding integrating with another system as there are many diverse systems involved in the process. Complexity: The design of the IOT system is also quite complicated. Moreover, it's deployment and maintenance also not very easy. Compliance: IOT has its own set of rules and regulations. However, because of its complexity, the task of compliance is quite challenging. Learning Activity REVIEW QUESTIONS 1. Make a list of the latest technological devices you are familiar with or have used. Identify at least 3 technology trends and write down their pros and cons. You can provide pictures if you want. Lesson 3: The Internet, Web and College of Information Technology Electronic Commerce DMMMSU - MLUC Lesson 3: The Internet, Web and College of Information Electronic Commerce Technology DMMMSU - MLUC