Do you need to type a disk encryption password into a Bitlocker-branded screen before Windows boots? Or alternatively are you required to insert a specific USB stick with a key file?
If so, you are using one of the more secure configurations. If not, you are using the less secure (TPM-only) configuration.
If so, you are using one of the more secure configurations. If not, you are using the less secure (TPM-only) configuration.