What is the role of ports in a computer?

Ports play a crucial role in a computer as they provide connection points for additional devices. This enables communication between the computer and external peripherals such as keyboards, mice, printers, monitors, and external storage devices. When a port is available on a computer, it allows users to expand the computer’s functionality by connecting various hardware components, thereby enhancing productivity and capabilities. For example, USB ports allow the connection of multiple devices like flash drives and webcams, while HDMI ports can connect displays and televisions.

The other options reflect functions that are not associated with ports. Power sources are typically handled by power supplies or batteries, not ports. While a computer's speed may be influenced by various internal components like the CPU and RAM, ports themselves do not manage speed. Finally, protection against malware is achieved through software solutions like antivirus programs and firewalls, not through hardware ports.