Guide on Layered Security

Layered Security: What it is and Why it is Important
Layered security, also known as defense in depth, is a security strategy that uses multiple defensive strategies to increase the security of a system or network.
This method is important because if one layer fails, others still provide protection. It makes it harder for threats to break into a system since intruders have to pass through multi-layer protection.
How Layered Security Works
Layered security works by implementing protection across different layers. This can include physical security, network security, computer security, and application security.
Each layer applies controls and countermeasures to protect against threats, and a potential flaw in one layer can be protected by another layer.

Exam Tips: Answering Questions on Layered Security
1. Understand the concept thoroughly: The basic idea of layered security revolves around having different levels, or 'layers' of security measures in place. Ensure to go through each layer and their purposes in detail.
2. Real-world examples: Use real-world scenarios to strengthen your understanding.
3. Think from multiple perspectives: When asked to discuss the weaknesses or strengths, consider both the physical and digital aspects of security.
4. Be thorough with the terminology: Understanding the terminology associated with layered security will help you fluently answer exam questions and understand scenarios better.
5. Visualize: Visualization can help you understand better. Draw diagrams to understand and remember key concepts.