Final answer:
The system bus is responsible for transferring data between the various components of a computer, but it does not transfer data between the computer and its external environment.
Step-by-step explanation:
A system bus is a component of a computer that is responsible for transferring data between the various components of the computer, such as the CPU, memory, and peripheral devices. However, the system bus does not transfer data between the computer and its external environment. Instead, it is used for internal communication within the computer.
For example, when you copy a file from a USB drive to your computer, the data is first transferred from the USB drive to the system bus and then to the memory. The system bus allows the CPU to access and process the data stored in the memory.
Therefore, the statement that the system bus does not transfer data between the computer and its external environment is true. Therefore, it's crucial to clarify that a system bus is not an isolated system; it is a key conduit for data and signals that enable a computer to operate and interact with its external hardware components.