Connection types refer to the various ways devices can communicate with each other. Common types include wired connections, such as Ethernet cables, which provide stable and fast data transfer, and wireless connections, like Wi-Fi and Bluetooth, which allow devices to connect without physical cables. Each type has its advantages and disadvantages, depending on the needs of the user. In addition to wired and wireless, there are also specialized connection types, such as USB for direct device connections and HDMI for transmitting high-definition video and audio. Understanding these connection types helps users choose the best option for their specific requirements, ensuring efficient communication between devices.