A ) A system that scans and removes viruses from a computer
B ) A system that prevents unauthorized access to a private network ✅
C ) A system in which multiple computers are connected to another
D ) A system that allows users to make secure online money transfer
Explanation:
➡️ A security system that monitors and controls incoming and outgoing network traffic.
✅ Firewall refers to a system that protects a computer or network from unauthorized access.
🔒 Explanation for Exams:
A firewall is:
- ✅ A network security system (hardware or software).
- ✅ It blocks unauthorized access to or from a private network.
- ✅ Works by filtering data packets based on security rules.