I would be really thankful if you could help me out with some explanation. I am really confused about this assignment. And please don't copy other answers to here.

A Wireshark trace contains a PROBE REQUEST frame where the source is 00:12:f0:1f:57:13, the receiver is ff:ff:ff:ff:ff:ff and the BSS Id is ff:ff:ff:ff:ff:ff. The trace also contains a PROBE RESPONSE frame where the source is 00:16:b6:f7:1d:51, the receiver is 00:12:f0:1f:57:13, and the BSS Id is 00:16:b6:f7:1d:51. What might be the purpose of these two frames