What countermeasure accomplishes the following?

Group of answer choices

Detects unauthorized activity traversing a network or attempts against host devices

Perimeter Security

Provides data privacy and encryption technology

Intrusion Detection

Monitors and maintains OSs, network devices$/$applications; establishes policies; and educates the users

Secure Connectivity

Provides a mechanism for verifying authorized users through authentication, accounting, and auditing

Identity

Restricts access to network resources, provides protocol limiting$,$ implements RFC $2827/1918$ filtering

Security Management