_____________ is a software program that filters all the data coming through the Internet.

Correct option is D

Correct Answer: (d) Firewall

Sol.

A Firewall is a security software or hardware device that filters incoming and outgoing network traffic based on predefined security rules. It acts as a barrier between a trusted internal network and an untrusted external network, such as the Internet. Firewalls help prevent unauthorized access, cyber threats, and data breaches by monitoring and controlling data packets.

Information Booster:

• Types of Firewalls: Includes Network Firewalls (hardware-based) and Host-based Firewalls (software-based).
• Function: Blocks malicious traffic and allows only authorized communication.
• Packet Filtering: Examines data packets to determine if they should be allowed or denied.
• Application Layer Filtering: Some advanced firewalls inspect application-level data for security threats.
• Examples: Windows Defender Firewall, Cisco ASA, Fortinet, Palo Alto Networks Firewalls.

Additional Information:

• Antivirus: Detects and removes malware but does not control network traffic like a firewall.
• Cookies : Small text files stored on a user's browser to remember website preferences; not a security tool.
• Malware : Malicious software like viruses, worms, and ransomware that can harm a system.
• Firewall Importance: Essential for protecting networks, servers, and devices from cyber threats.