In the context of IoT security, which of the following represents the greatest vulnerability? 

Match the security technology to its primary application

(True/False): Encryption ensures data confidentiality but not integrity. 

Match the attack to its description

(True or False): The TCP/IP model has exactly seven layers like the OSI model.

What is the purpose of role-based access control (RBAC)? 

Describe a real-world scenario where multiple security models (e.g., Bell-LaPadula, Biba, Clark-Wilson) would be applied together in an organization. Explain how each model addresses different security concerns, how they complement each other, and what implementation challenges might arise.

(True/False): Risk mitigation completely eliminates risk. 

When conducting a security audit, chain of custody documentation is most important for:  

(True/False):The Trusted Computing Base (TCB) should be as large as possible to enhance security.