What is the role of a firewall in data security?

What is the role of a firewall in data security?
A . Encrypt sensitive information
B . Monitor and control incoming and outgoing network traffic
C . Authenticate users before granting system access
D . Prevent physical access to servers

View Answer

Answer: B

Explanation:

Firewalls act as a barrier between trusted and untrusted networks, filtering traffic based on security policies to prevent unauthorized access.