Operating System (OS)
If you do not know which version of MS-DOS you are working with, which command will you use after having booted your operating system?
which perform indicated operations on two fast registers of the machine and have the result in one of the registers
which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, expect in the case of store operation when it is also
EXAMIANS