What is the primary function of Tenable Nessus Network Monitor (NNM)?

What is the primary function of Tenable Nessus Network Monitor (NNM)?

• A. Serve as a primary firewall for network security
• B. Replace traditional vulnerability management software
• C. Actively prevent cyber attacks by blocking malicious traffic
• D. Operate as a passive listening sensor that imports results into Tenable Vulnerability Management

Answer: (D)