COMPUTER NETWORKING

Detailed explanation-1: -Firewalls can be hardware and software both. The router is an example of a physical firewall, and a simple firewall program on the system is an example of a software firewall. Anti-virus can only be used as software. Anti-virus is a program that is installed on the device, just like the other programs.

Detailed explanation-2: -There are two types of firewalls based on what they protect: network-based and host-based. Network-based firewalls, which are frequently hardware, protect entire networks. Host-based firewalls, which are frequently software, protect individual devices known as hosts.

Detailed explanation-3: -A firewall is a security system designed to prevent unauthorized access into or out of a computer network. Firewalls are often used to make sure internet users without access are not able to interface with private networks, or intranets, connected to the internet.

Detailed explanation-4: -Hardware vs. Software Firewalls. At the most basic level, a hardware firewall is a physical unit, while software firewalls operate from inside your computer via an application.