What is the function of a firewall in a network?

What is the function of a firewall in a network?

• A. To speed up data processing
• B. To store data
• C. To monitor and control incoming and outgoing traffic based on security rules
• D. To provide email

Answer: (C)

A firewall functions as a security gate for a network. It monitors and controls incoming and outgoing traffic based on predefined security rules, deciding which packets to allow through and which to block. This boundary protection helps prevent unauthorized access and threats from entering the network, using criteria like IP addresses, ports, and protocols, with more advanced firewalls adding stateful and application-level checks. It doesn’t speed up data processing, store data, or provide email services, which is why those options aren’t correct.

A firewall functions as a security gate for a network. It monitors and controls incoming and outgoing traffic based on predefined security rules, deciding which packets to allow through and which to block. This boundary protection helps prevent unauthorized access and threats from entering the network, using criteria like IP addresses, ports, and protocols, with more advanced firewalls adding stateful and application-level checks. It doesn’t speed up data processing, store data, or provide email services, which is why those options aren’t correct.