| 11. | The R/M field in a machine instruction format specifies |
| a. | another register |
| b. | another memory location |
| c. | other operand |
| d. | all of the mentioned |
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Answer: (d).all of the mentioned
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| 12. | In a machine instruction format, S-bit is the |
| a. | status bit |
| b. | sign bit |
| c. | sign extension bit |
| d. | none of the mentioned |
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Answer: (c).sign extension bit
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| 13. | The instructions which after execution transfer control to the next instruction in the sequence are called |
| a. | Sequential control flow instructions |
| b. | control transfer instructions |
| c. | Sequential control flow & control transfer instructions |
| d. | none of the mentioned |
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Answer: (a).Sequential control flow instructions
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| 14. | The instructions that transfer the control to some predefined address or the address specified in the instruction are called as |
| a. | sequential control flow instructions |
| b. | control transfer instructions |
| c. | sequential control flow & control transfer instructions |
| d. | none of the mentioned |
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Answer: (b).control transfer instructions
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| 15. | The instruction “JUMP” belongs to |
| a. | sequential control flow instructions |
| b. | control transfer instructions |
| c. | branch instructions |
| d. | control transfer & branch instructions |
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Answer: (d).control transfer & branch instructions
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| 16. | Instructions performing actions in assembly language are called |
| a. | imperative statements |
| b. | declarative statements |
| c. | directive statements |
| d. | none of the above |
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Answer: (a).imperative statements
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| 17. | Assembly language programs are written using |
| a. | Hex code |
| b. | Mnenonics |
| c. | ASCII code |
| d. | None of these |
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Answer: (b).Mnenonics
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| 18. | The instruction DEC N inform the assembler to |
| a. | Decrement the content of N |
| b. | Decrement the data addressed by N |
| c. | Convert signed decimal number to binary |
| d. | none of these |
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Answer: (a).Decrement the content of N
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| 19. | To overcome the problems of the assembler in dealing with branching code we use _____ . |
| a. | Interpreter |
| b. | Debugger |
| c. | Op-Assembler |
| d. | Two-pass assembler |
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Answer: (d).Two-pass assembler
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| 20. | The utility program used to bring the object code into memory for execution is ______. |
| a. | Loader |
| b. | Fetcher |
| c. | Extractor |
| d. | Linker |
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Answer: (a).Loader
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