Which of the following features allows for multiple servers to be backed up to a single tape drive?

Multi-streaming typically refers to backing up different data sets from a single server simultaneously, often to multiple tape drives, or to multiple streams within a single drive if the software supports it, but not directly multiple servers to a single tape drive in the same way multiplexing does.

Compression reduces the size of data to be stored, but it does not enable multiple servers to back up concurrently to a single tape drive.

Multiplexing allows data from multiple backup sources (servers, applications) to be interleaved and written concurrently to a single tape drive, maximizing the tape drive's utilization and reducing backup windows. It aggregates multiple data streams into one for the tape drive.

Shoe-shining refers to the inefficient start-stop motion of a tape drive when the data stream is too slow, leading to wear and tear, and is a problem to avoid, not a feature for concurrent backups.