Which statement best describes hardening and air-gapping and when each is appropriate?

Which statement best describes hardening and air-gapping and when each is appropriate?

• A. Hardening reduces vulnerabilities; air-gapping isolates from networks; Hardening for general servers; Air-gapping for highly sensitive systems.
• B. Hardening and air-gapping are the same.
• C. Air-gapping is used for bulk data encryption.
• D. Hardening makes systems slower but improves user experience.

Answer: (A)