A firewall is a security system designed to monitor and control incoming and outgoing network traffic. Its primary function is to prevent unauthorized access to or from a private network by blocking or allowing data packets based on security rules.

Hybrid computers are designed to handle both digital and analog data. They combine the functionalities of analog computers (processing continuous data) and digital computers (processing discrete data), making them versatile for applications like medical devices and industrial processes.

The resolution power of a computer, especially for display screens or images, is measured in pixels. It refers to the number of distinct pixels that can be displayed in each dimension, determining the clarity and detail of the image.

A browser is a software application used to access and view websites on the internet. Examples include Google Chrome, Mozilla Firefox, and Microsoft Edge.

An IP address (Internet Protocol address) is a unique identifier assigned to a device connected to a network. It allows the device to communicate with other devices on the internet or a local network. It can be in IPv4 or IPv6 format.