Binary Questions and Answers updated daily – Computer Knowledge

Binary Questions: Solved 31 Binary Questions and answers section with explanation for various online exam preparation, various interviews, Computer Knowledge Category online test. Category Questions section with detailed description, explanation will help you to master the topic.

Binary Questions

1. In Reverse Polish notation, expression A*B+C*D is written as




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Correct Ans:AB*CD*+
Explanation:
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2. Floating point representation is used to store ______.




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Correct Ans:real integers
Explanation:
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3. In computers, subtraction is generally carried out by ______.




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Correct Ans:2’s complement
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4. In signed-magnitude binary division, if the dividend is (11100)2 and divisor is (10011)2 then the result is ______.




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Correct Ans:(10100)2
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5. Translation from symbolic program into Binary is done in_____.




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Correct Ans:Two passes
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6. A floating point number that has a O in the MSB of mantissa is said to have_____.




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Correct Ans:Underflow
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7. What is the difference between binary coding and binary coded decimal?




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Correct Ans:Binary coding is pure binary.
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8. 3428 is the decimal value for which of the following binary coded decimal (BCD) groupings?




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Correct Ans:1.101E+13
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9. In EBCDIC code, maximum possible characters set size is




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Correct Ans:character set of 256
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10. In BCD code, maximum possible characters set size is




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Correct Ans:character set of 64
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11. The original ASCII code used ______ bits of each byte, reserving that last bit for error checking




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Correct Ans:7
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12. Let I denote the formula: (q ==> p) ==> (p ==> q)
Let II denote the formula (p ==> q) ^ q
Which of the following is true?




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Correct Ans:I is not a tautology and II is satisfiable.
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13. Of the following sorting algorithms, which has a running time that is at LEAST dependent on the initial ordering of the input?




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Correct Ans:Merge sort
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14. Of the following, which best characterizes computers that use memory-mapped I/O?




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Correct Ans:I/O ports are placed at addresses on the bus and are accessed just like other memory locations.
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15. Which of the following is usually NOT represented in a subroutine's activation record frame for a stack-based programming language?




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Correct Ans:A heap area
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16. An advantage of choosing this implementation of “set of integers” is that adding an element to a set is a contact time operation. Which of the following is a disadvantage of this implementation?




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Correct Ans:Adding elements to a very small sets could cause error flags to be raised
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17. A program that checks spelling works in the following way. A hash table has been defined in which each entry is a Boolean variable initialized to false. A hash function has been applied to each word in the dictionary, and the appropriate entry in the hash table has been set to true. To check the spelling in a document, the hash function is applied to every word in the document, and the appropriate entry in the table is examined. Which of the following is (are) correct?

I. true means the word was in the dictionary.
II. false means the word was not in the dictionary.
III. Hash table size should increase with document size.




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Correct Ans:II only
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18. A particular disk unit uses a bit string to record the occupancy or vacancy of its tracks, with 0 denoting vacant and 1 denoting occupied. A 32-bit segment of this string has the hexadecimal value D4F E2003. The percentage of occupied tracks for the corresponding part of the disk, to the nearest percent, is




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Correct Ans:44
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19. In multiprogrammed systems it is advantageous if some programs such as editors and compilers can be shared by several users. Which of the following must be true of multiprogrammed systems in order that a single copy of a program can be shared by several users?

I. The program is a macro.
II. The program is recursive.
III. The program is re entrant.




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Correct Ans:III only
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20. Let P be a procedure that for some inputs calls itself (i.e., is recursive). If P is guaranteed to terminate, which of the following statements must be true?

I. P has a local variable.
II. P has an execution path where it does not call itself.
III. P either refers to a global variable or has at least one parameter.




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Correct Ans:II and III only
Explanation:
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