Which term describes the physical connection between the CPU and system memory?

The term that accurately describes the physical connection between the CPU and system memory is the Front Side Bus. This bus is a crucial component in a computer's architecture, serving as the primary pathway for data transfer between the CPU and the system’s RAM (Random Access Memory).

When data is transmitted from the CPU to memory or vice versa, it utilizes the Front Side Bus to ensure that the flow of information is efficient and timely. This bus operates at a specific frequency, which can affect the overall speed of data processing.

Other options may represent different types of connections or components within a computer's architecture. For instance, the Back Side Bus typically refers to a connection used for communication between the CPU and the cache memory, thereby serving a different function. Meanwhile, a Memory Interface is a more generic term that might describe connections to memory but does not specify the physical bus structure as clearly. Lastly, the Auxiliary Bus usually pertains to less critical data paths in a computer and is not primarily associated with the direct connection between the CPU and system memory. Thus, the Front Side Bus is the most accurate term for this specific physical connection.