The instruction that is unable to set or read the VM (Virtual Mode) bit is
A. PUSHF
B. IRET
C. POPF
D. PUSHF and POPF
Answer:A
The instruction that is unable to set or read the VM (Virtual Mode) bit is
A. PUSHF B. IRET C. POPF D. PUSHF and POPF
Explanation: The PUSHF and POPF instructions are unable to set or read the VM (Virtual Mode) bit, as they do not access it. The virtual mode can be entered by using IRET instruction.