Which option describes a network attack that occurs on the first day that a vulnerability becomes known?

Which option describes a network attack that occurs on the first day that a vulnerability becomes known?

• Firewall
• Virus, worm, or Trojan horse
• Zero-day or Zero-hour
• Virtual Private Network (VPN)
• Denial of Service (DoS)

Explanation: A zero-day or zero-hour attack occurs on the first day that a vulnerability becomes known.

Exam with this question: 1.8.3 Check Your Understanding – Network Security