Question

mov[BX], AL is which kind of addressing mode

Answer 1

Register indirect addressing

Answer 2

Let Register BX content is 1000

    Register AL content is 20

Here,  we have to transfer content of Register AL at the location which is present at [BX]

                      Effective Address EA=[BX] // Content of Register BX

                                                    =1000

                     So, AL data 20 will be moved at memory location 1000

This is Register Indirect Addressing Mode