| 31. | 2’s complement is used to represent signed integers, especially __________ integers. |
| a. | Negative |
| b. | Positive |
| c. | Both a and b |
| d. | None of the above |
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Answer: (a).Negative
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| 32. | In ___________________, to encode a negative number, first the binary representation of its magnitude is taken, complement each bit and then add 1. |
| a. | Signed integer representation |
| b. | 1’s complement representation |
| c. | 2’s complement representation |
| d. | Radix complement representation |
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Answer: (c).2’s complement representation
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| 33. | Which one of the following is the type of complement for each base R system? |
| a. | Diminished radix-complement representation [(R – 1)’s complement] |
| b. | Radix- complement representation [R’s complement] |
| c. | 1’s and 2’s complement representation |
| d. | Both a and b |
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Answer: (d).Both a and b
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| 34. | For subtraction of binary number, subtract the _________________. |
| a. | Minuend from the subtrahend digit |
| b. | Subtrahend digit from the minuend |
| c. | MSB from the LSB |
| d. | None of the above |
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Answer: (b).Subtrahend digit from the minuend
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| 35. | Which of the following condition is true for determining overflow condition in 2’s complement? |
| a. | When adding two positive numbers gives a negative result or when two negatives give a positive result. |
| b. | If sign bit (MSB) of result and sign bit of two operands are of different signs. |
| c. | The ‘1’ in the MSB position indicates a negative number after adding two positive numbers. |
| d. | All of the above |
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Answer: (d).All of the above
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| 36. | What does the leftmost bit represents, according to the IEEE standards? |
| a. | Sign of the number |
| b. | Position of the number |
| c. | Weight of the number |
| d. | None of the above |
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Answer: (a).Sign of the number
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| 37. | Floating-point numbers are those numbers, which include ______________. |
| a. | Decimals |
| b. | Fractional parts |
| c. | Integer values |
| d. | All of the above |
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Answer: (d).All of the above
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| 38. | The binary representation of 0.875 is 0 01111110 11000000000000000000000 in _______________presentation. |
| a. | 128- bit |
| b. | Excess 127 |
| c. | 32- bit |
| d. | 16-bit |
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Answer: (c).32- bit
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| 39. | 1000001 represents as (65)10 in which code? |
| a. | ASCII code |
| b. | Straight binary code |
| c. | Gray code |
| d. | BCD code |
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Answer: (b).Straight binary code
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| 40. | In straight binary code, N-bits or N binary digits can represent ______________ different values. |
| a. | 2^N |
| b. | 2^(N+1) |
| c. | 2^(N-1) |
| d. | 2^N -1 |
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Answer: (a).2^N
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