
Explore how the internet, a global network of networks built from Arpanet beginnings, enables email, the World Wide Web, and services across surface, hidden, and dark web layers.
Tim Berners-Lee created the World Wide Web, delivering HTML, HTTP/HTTPS, the first web page and browser, and freely opened it to everyone in 1991, enabling hypertext connections.
Explore HTTP and HTTPS, the hypertext transfer protocol used by web pages, and how TLS encryption protects client–server communications, with OSI layers, TCP/IP, and certificates.
Explore how web browsers display hypertext web pages, render HTML with CSS and JavaScript, and manage navigation, history, bookmarks, tabs, cache, and cookies.
Explore how web pages are located, retrieved, and displayed by using DNS lookups, IP addresses, and HTTP exchanges, including caching, proxies, and the browser rendering HTML, CSS, and scripts.
Explore how cookies enable session tracking, personalization, and cross-site behavior along with privacy concerns and GDPR rules, distinguishing session and permanent cookies in web interactions.
Explore digital currency concepts, including central bank digital currencies, virtual currencies, and cryptocurrencies, their advantages, privacy concerns, decentralization, blockchain, volatility, fraud, and environmental impacts.
Explore how malware types including viruses, worms, trojan horses, spyware, ransomware, and adware infect computers, and how hacking, brute-force attacks, data interception, phishing, and social engineering threaten networks.
Apply multi-layer security by using passwords, pin codes, biometrics, and two-step verification to control access; deploy firewalls, anti-malware, vpn, proxy servers, and ssl to protect networks, data, and devices.
Explore how data packets break files into header, payload, and trailer, travel through routers by packet switching, and are reassembled at the destination with CRC checks.
Explore how data transmission detects and handles errors using parity checks, checksums, check digits, and ARQ, with echo checks and modulo 11 barcode examples.
Discover the fundamentals of computer science, from hardware and software to binary representations of images and sounds, and how data transmits across the internet, with links to courses and resources.
If you or teenagers you know are studying Computer Science and want to master fundamental concepts and achieve top scores in the exams, this is the course for you! Designed specifically for international school students, home schoolers, and independent students studying IGCSE Computer Science, GCSE Computer Science, or High School Computer Science, this course will provide you with everything you need to know to understand the internet and the World Wide Web, and how data is transmitted across the internet.
In today's wired world, understanding the fundamentals of the internet and how data gets transmitted is a skill everyone needs. High school students, in particular, should master the basics of computers to prepare themselves for the digital age and the workforce. By learning about internet and data transmission in this course, you will be better equipped to use computers and other digital devices effectively. You will also be able to understand the protocols and rules that cover how information is sent from device to device. You will be better equipped to understand and evaluate new technologies and their potential impact on society. Finally, learning about the internet can be a fun and rewarding experience for high school students. It can help you develop new skills and interests, and may even inspire you to pursue a career in technology!
This course is intended to guide learners through a high-school level (IGCSE, IB Diploma, or similar) curriculum. It is intended to be purchased by adults over 18 years old, either for their own fundamental learning, or to be then given to a younger person to use. According to Udemy's regulations, "Those under 18 may use the services only if a parent or guardian opens their account, handles any enrollments, and manages their account usage." If you are under 18, I encourage you to take this course but to let your parent or legal guardian manage the enrollment and payment.
In this course, you will be able to:
Review the Computer Science syllabus in a logical and organized manner
Gain a deep understanding of each topic through clear explanations and illustrative images and videos
Reinforce your knowledge with interactive quizzes and exercises
Keep track of your learning with helpful study guides
Get instant feedback on your progress and identify areas you need to work on.
This course includes:
Video lessons covering the key network topics of Computer Science
Quizzes and exercises to reinforce your understanding
Downloadable study guides
Access to expert instructors for support and guidance
A supportive community of like-minded students to share your journey
This course is taught by a highly experienced Computer Science teacher who has spent many years teaching the subject in top-class international schools around the world, preparing students for success in many curricula and exams. He is a certified and highly qualified Computer Science teacher at the secondary level as well as at other levels.
This IGCSE Computer Science (O Level) masterclass covers all the content needed to write the IGCSE and GCSE Computer Science exams offered by Pearson Edexcel or Cambridge CIE or other exam boards like Oxford AQA. It also covers the basics of content required by the IB Diploma Computer Science course, AP Computer Science, or other High School or Secondary School Computer Science programs.