Answer the following statements true (T) or false (F)

1. The OSI security architecture provides a systematic framework for defining security attacks, mechanisms, and services.
2. Security attacks are classified as either passive or aggressive.
3. Authentication protocols and encryption algorithms are examples of security mechanisms.
4. The more critical a component or service, the higher the level of required availability.
5. Thanks to years of research and development, it is now possible to develop security design and implementation techniques that systematically exclude security flaws and prevent all unauthorized actions.

1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. FALSE