| Exam 200-201 | Question id=5992 | Security concepts | 
        What is the principle of defense-in-depth?
      
| A. | Agentless and agent-based protection for security are used. | |
| B. | Several distinct protective layers are involved. | |
| C. | Access control models are involved. | |
| D. | Authentication, authorization, and accounting mechanisms are used. |