Which of the following statements correctly explains the term Firewall in context of Computer Network Society ?

1. A device that protects the computer network from catching fire.
2. A device/software that controls incoming and outgoing network traffic.
3. Using abusive language on a social network site.
4. Stealing someone's text and submitting it as his/her own work.

A device/software that controls incoming and outgoing network traffic.

Reason — The system designed to prevent unauthorized access to or from a private network is called Firewall.