MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Microprocessors knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The instruction that pushes the flag register on to the stack is |
| A. | PUSH |
| B. | POP |
| C. | PUSHF |
| D. | POPF |
| Answer» D. POPF | |
| 2. |
The instruction that loads the AH register with the lower byte of the flag register is |
| A. | SAHF |
| B. | AH |
| C. | LAHF |
| D. | PUSHF |
| Answer» D. PUSHF | |
| 3. |
The instruction that loads effective address formed by destination operand into the specified source register is |
| A. | LEA |
| B. | LDS |
| C. | LES |
| D. | LAHF |
| Answer» B. LDS | |
| 4. |
The instruction that is used for finding out the codes in case of code conversion problems is |
| A. | XCHG |
| B. | XLAT |
| C. | XOR |
| D. | JCXZ |
| Answer» C. XOR | |
| 5. |
The instructions that are used for reading an input port and writing an output port respectively are |
| A. | MOV, XCHG |
| B. | MOV, IN |
| C. | IN, MOV |
| D. | IN, OUT |
| Answer» E. | |
| 6. |
In POP instruction, after each execution of the instruction, the stack pointer is |
| A. | incremented by 1 |
| B. | decremented by 1 |
| C. | incremented by 2 |
| D. | decremented by 2 |
| Answer» D. decremented by 2 | |