Correct option is C
A
firewall is either a software program or a hardware device designed to monitor and filter incoming and outgoing network traffic. It acts as a security guard between a trusted internal network and untrusted external networks.
Important Key Points:
1.
Firewall Function - Protects systems by
filtering data and preventing unauthorized access.
2.
Types of Firewalls - Can be
software-based (installed on computers) or
hardware-based (used in networks).
Knowledge Booster:
·
Malware: A broad category of
malicious software that includes viruses, worms, and Trojans, which can damage or disrupt systems.
·
Cookies: Small pieces of data stored by websites on a user's computer, typically to remember login details or preferences.
·
Adware: A type of software that automatically displays or downloads
advertising material to a computer, often without user consent.