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Fundamentals of Computer Networks and Cyber Security

Fundamentals of Computer Networks and Cyber Security is an introductory tutorial that provides a comprehensive understanding of computer systems, networking concepts, and basic security principles. This module begins with the fundamental components of a computer system, including hardware, software, memory, and the Central Processing Unit (CPU). It then introduces the core concepts of computer networking such as network types (LAN, MAN, WAN), network topologies, network devices (routers, switches, modems), and communication models like the OSI model developed by the International Organization for Standardization and the TCP/IP model. The tutorial further explores Internet Protocol (IP) addressing, data transmission, and basic network services used in modern communication systems such as the Internet. In addition, the course introduces foundational cybersecurity concepts, including the CIA triad (Confidentiality, Integrity, and Availability), types of cyber threats (malware, phishing, ransomware), firewalls, antivirus systems, authentication methods, and encryption techniques used to protect information systems. This tutorial is designed for: Beginner students in Computer Science or Information Technology Exam preparation and revision Introductory networking and security courses Self-learning and foundational understanding