4 - IT Systems & Network Security: Essential Concepts Explained

Explore the essential IT systems and applications that help organisations protect their networks, users, and digital assets. Learn how network protocols and communications work, how network access is managed, and how firewalls and application and network security controls defend against cyber threats. Discover the importance of role-based access control (RBAC), effective user management, and modern encryption technologies and standards in maintaining confidentiality, integrity, and secure access to information.