Moderate

Which of the following protects the system from hackers ?

Correct answer: A. Firewall

  • A. Firewall
  • B. Scanner
  • C. Hub
  • D. Snort

Explanation

A firewall filters incoming and outgoing network traffic according to security rules, blocking many unauthorized connections. Snort is mainly an intrusion-detection tool, while a hub and scanner do not provide this primary protection.

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