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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