In a preemptive multitasking O.S., the saving and restoring of FP and MMX states are performed by
A. control unit
B. O.S.
C. MMX instructions
D. MMX registers
Answer:A
In a preemptive multitasking O.S., the saving and restoring of FP and MMX states are performed by
A. control unit B. O.S. C. MMX instructions D. MMX registers
Explanation: In a preemptive multitasking O.S., the application does not know when it is preemptied. It is the job of the O.S. to save and restore the FP and MMX states, when performing a context switch. Thus the user need not save or restore the state.