Kindly help me to understand the purpose of Wi-Fi and Bluetooth modules. It is required to set up for the Udoo Bolt V8 board to function well? Can the Wi-Fi and Bluetooth connect without the modules installed?
If you don't need BT and Wifi then you do not need to buy the extra BT/Wifi module. Bolt has a build in Ethernet connector for wired network connection.
The Bolt has no onboard WiFi or Bluetooth so if you want either or both of these you need to purchase the relevant modules.
