Compiler Questions and Answers updated daily – Computer Knowledge



34 Compiler Questions and answers section with explanation for various online exam preparation, various interviews, Computer Knowledge Compiler online test. Compiler Questions with detailed description, explanation will help you to master the topic.

Compiler Questions

1. From the following options the one that modifies the program counter, in 8085 microprocessor, is



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Correct Ans:Only ADD instruction
Explanation:


2. The average time required to reach a storage location in memory and obtain its contents is called the _____.



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Correct Ans:access time
Explanation:


3. In a program using subroutine call instruction, it is necessary______.



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Correct Ans:Clear the instruction register
Explanation:


4. An n-bit microprocessor has_____.



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Correct Ans:n-bit instruction register
Explanation:


5. PSW is saved in stack when there is a _____.



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Correct Ans:interrupt recognized
Explanation:


6. _________ register keeps tracks of the instructions stored in program stored in memory.



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Correct Ans:PC (Program Counter)
Explanation:


7. ‘Aging registers’ are _______.



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Correct Ans:Counters which indicate how long ago their associated pages have been referenced.
Explanation:


8. The BSA instruction is______.



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Correct Ans:Branch and save return address
Explanation:


9. The average time required to reach a storage location in memory and obtain its contents is called_____.



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Correct Ans:Access time.
Explanation:


10. The load instruction is mostly used to designate a transfer from memory to a processor register known as____.



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Correct Ans:Accumulator
Explanation:


11. What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time?



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Correct Ans:Bus arbitration
Explanation:


12. Computers with 80286 microprocessor is



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Correct Ans:AT computers
Explanation:


13. Microprocessors as switching devices are for which generation computers



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Correct Ans:Fourth Generation
Explanation:


14. Pipeline processing uses the technique:



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Correct Ans:Prefetching
Explanation:


15. The microprocessor of a computer can't operate on any information if that information is not in its:



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Correct Ans:Main Storage
Explanation:


16. The word size of a microprocessor refers to:



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Correct Ans:The amount of a information that can be stored in a cycle
Explanation:


17. How many address lines are needed to address each memory location in a 2048 X 4 memory chip?



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Correct Ans:11
Explanation:


18. Which of the following registers is loaded with the contents of the memory location pointed by the PC?



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Correct Ans:Instruction Register
Explanation:


19. Which of the following registers is used to keep track of address of the memory location where the next instruction is located?



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Correct Ans:Program Counter
Explanation:


20. The stack pointer in the 8085 microprocessor is a:



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Correct Ans:16 bit register that points to stack memory locations
Explanation:



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