MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 93 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The excess-3 code of decimal 7 is represented by |
| A. | 1100 |
| B. | 1001 |
| C. | 1011 |
| D. | 1010 |
| Answer» E. | |
| 2. |
The digits used in a binary number system are _____ and _____. |
| A. | 9 and 0 |
| B. | 0 and 1 |
| C. | 1 and 2 |
| D. | 3 and 4 |
| Answer» C. 1 and 2 | |
| 3. |
Resultant binary of the decimal problem 49 + 1 is |
| A. | 00110010 |
| B. | 110011 |
| C. | 1010101 |
| D. | 111100 |
| Answer» B. 110011 | |
| 4. |
What is the 9’s complement of (0.3267)10? |
| A. | 47.479 |
| B. | 0.6352 |
| C. | 0.6732 |
| D. | 1.4563 |
| Answer» D. 1.4563 | |
| 5. |
BCD code is |
| A. | non-weighted |
| B. | the same thing as binary numbers |
| C. | a binary code |
| D. | an alphanumeric code |
| Answer» D. an alphanumeric code | |
| 6. |
Boolean algebra is named after________________, who used it to study human logical reasoning. |
| A. | Anderson, Mary |
| B. | Acharya Kanad |
| C. | Dickson, Earle |
| D. | George Boole |
| Answer» E. | |
| 7. |
Data keys need not be a direct hardware address in |
| A. | hard disk |
| B. | memory |
| C. | RAM |
| D. | ROM |
| Answer» C. RAM | |
| 8. |
In Excess-3 code each coded number is |
| A. | four larger than in BCD code |
| B. | three smaller than in BCD code |
| C. | three larger than in BCD code |
| D. | much larger than in BCD code |
| Answer» D. much larger than in BCD code | |
| 9. |
The number of bits used to store a BCD digit is |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 10. |
All of the following are 4-bit combinations of BCD code except |
| A. | 1010 |
| B. | 1100 |
| C. | 1000 |
| D. | 1001 |
| Answer» B. 1100 | |
| 11. |
How can you represent = in 8-bit EBCDIC representation? |
| A. | 01111111 |
| B. | 01111110 |
| C. | 01011100 |
| D. | 01101011 |
| Answer» C. 01011100 | |
| 12. |
Binary equivalent of A16 is |
| A. | 1010 |
| B. | 1011 |
| C. | 1000 |
| D. | 1110 |
| Answer» B. 1011 | |
| 13. |
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 |
| Answer» B. 2^(N+1) | |
| 14. |
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 |
| Answer» B. Positive | |
| 15. |
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 |
| Answer» E. | |
| 16. |
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 |
| Answer» D. Radix complement representation | |
| 17. |
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 |
| Answer» E. | |
| 18. |
Floating-point numbers are those numbers, which include ______________. |
| A. | Decimals |
| B. | Fractional parts |
| C. | Integer values |
| D. | All of the above |
| Answer» E. | |
| 19. |
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 |
| Answer» C. MSB from the LSB | |
| 20. |
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 |
| Answer» B. Position of the number | |
| 21. |
The binary representation of 0.875 is 0 01111110 11000000000000000000000 in _______________presentation. |
| A. | 128- bit |
| B. | Excess 127 |
| C. | 32- bit |
| D. | 16-bit |
| Answer» D. 16-bit | |
| 22. |
1000001 represents as (65)10 in which code? |
| A. | ASCII code |
| B. | Straight binary code |
| C. | Gray code |
| D. | BCD code |
| Answer» C. Gray code | |
| 23. |
How -5 is represented in hex format in 2’s complement in 8-bits? |
| A. | (FB)16 |
| B. | (7F)16 |
| C. | (FF)16 |
| D. | (FA)16 |
| Answer» B. (7F)16 | |
| 24. |
In N-bits, you can represent the signed integers ranging from ___________. |
| A. | 2 ^(N-1) to 2^ (N+1) |
| B. | -2^(N-1) to 2^(N-1) -1 |
| C. | 2 ^(N+1) to 2^(N-1) +1 |
| D. | 2^ (N) to 2^ (N+1) |
| Answer» C. 2 ^(N+1) to 2^(N-1) +1 | |
| 25. |
EXOR is the __________ of the binary number. |
| A. | MSB to the next bit |
| B. | LSB to the next bit |
| C. | MSB of the previous bit |
| D. | LSB of the previous bit |
| Answer» B. LSB to the next bit | |
| 26. |
ASCII code is required for representing more than ________ characters. |
| A. | 16 |
| B. | 8 |
| C. | 64 |
| D. | 32 |
| Answer» D. 32 | |
| 27. |
Which of the following code is also known as reflected code? |
| A. | Excess-3 code |
| B. | Gray code |
| C. | Straight binary code |
| D. | Error code |
| Answer» C. Straight binary code | |
| 28. |
Why the 8-bit (MSB) is added in EBCDIC? |
| A. | For carriage return |
| B. | For making the total number of 1’s odd |
| C. | For line feed |
| D. | For parity |
| Answer» E. | |
| 29. |
What is the 8-bit EBCDIC representation of alphabet M? |
| A. | 1100100 |
| B. | 11001001 |
| C. | 11010100 |
| D. | 010001 |
| Answer» D. 010001 | |
| 30. |
Which of the following is not correct regarding EBCDIC? |
| A. | It is used to represent more than 64 characters. |
| B. | It is a 7-bit code. |
| C. | A maximum of 128 different characters can be represented by this code. |
| D. | None of the above |
| Answer» C. A maximum of 128 different characters can be represented by this code. | |
| 31. |
How can you represent (08)10 in BCD? |
| A. | 0000 1000 |
| B. | 0010 0011 |
| C. | 1001 0010 0001 |
| D. | 1001 0010 |
| Answer» B. 0010 0011 | |
| 32. |
The MSB of _____________ is same as the MSB of the corresponding Gray code. |
| A. | Alphanumeric code |
| B. | Excess-3 code |
| C. | Binary code |
| D. | Gray code |
| Answer» D. Gray code | |
| 33. |
(FA)16 is the ________ one’s complement representation of -5. |
| A. | 4-bit |
| B. | 8-bit |
| C. | 16-bit |
| D. | 2-bit |
| Answer» C. 16-bit | |
| 34. |
Which of the following is a self complementing code? |
| A. | 8421 code |
| B. | 5211 |
| C. | Gray code |
| D. | Binary code |
| Answer» B. 5211 | |
| 35. |
Which one is the possible technique for representing signed integers? |
| A. | Signed Magnitude Representation |
| B. | Diminished Radix-Complement Representation |
| C. | Radix-Complement Representation |
| D. | All of the above |
| Answer» E. | |
| 36. |
What is used to represent the signed magnitude? |
| A. | MSB |
| B. | LSB |
| C. | Both of the above |
| D. | None of the above |
| Answer» B. LSB | |
| 37. |
What are the two ways of representing the 0 with signed magnitude representation? |
| A. | -0 and -0 |
| B. | +0 and +0 |
| C. | -0 and +0 |
| D. | None of the above |
| Answer» D. None of the above | |
| 38. |
The conversation speed of an analog to digital converter is maximum with the following technique. |
| A. | Dual slope AD converter. |
| B. | Serial comparator AD converter. |
| C. | Successive approximation AD converter. |
| D. | Parallel comparator AD converter. |
| Answer» E. | |
| 39. |
To store data bytes in a file, they have to be serialized in a |
| A. | file format |
| B. | data format |
| C. | binary format |
| D. | numeric format |
| Answer» B. data format | |
| 40. |
Data can be organized in many different types of data structures, including |
| A. | arrays |
| B. | graphs |
| C. | objects |
| D. | all of these |
| Answer» E. | |
| 41. |
Digital data is represented using |
| A. | binary system |
| B. | alphabetic system |
| C. | processing system |
| D. | numeric system |
| Answer» B. alphabetic system | |
| 42. |
To convert a whole decimal number into a hexadecimal equivalent, one should divide the decimal value by |
| A. | 2 |
| B. | 8 |
| C. | 10 |
| D. | 16 |
| Answer» B. 8 | |
| 43. |
Binary files are sometimes referred as |
| A. | data |
| B. | information |
| C. | instruction |
| D. | command |
| Answer» B. information | |
| 44. |
Convert the binary number 1011010 to hexadecimal |
| A. | 5C |
| B. | 5A |
| C. | 5F |
| D. | 5B |
| Answer» C. 5F | |
| 45. |
Hexadecimal number system is used as a shorthand language to represent |
| A. | decimal numbers |
| B. | binary numbers |
| C. | octal numbers |
| D. | quinary numbers |
| Answer» B. binary numbers | |
| 46. |
Numbering system which uses numbers and letters as symbols is termed as |
| A. | decimal |
| B. | binary |
| C. | octal |
| D. | hexadecimal |
| Answer» E. | |
| 47. |
If the decimal point is placed to the right of the first significant digit, then the number is called as ________. |
| A. | Orthogonal |
| B. | Normalized |
| C. | Determinate |
| D. | None of the above |
| Answer» C. Determinate | |
| 48. |
The sign followed by the string of digits is called as ______. |
| A. | Significant |
| B. | Determinant |
| C. | Mantissa |
| D. | Exponent |
| Answer» D. Exponent | |
| 49. |
The numbers written to the power of 10 in the representation of decimal numbers are called as _____. |
| A. | Height factors |
| B. | Size factors |
| C. | Scale factors |
| D. | None of the above |
| Answer» D. None of the above | |
| 50. |
The 32 bit representation of the decimal number is called as ____. |
| A. | Double-precision |
| B. | Single-precision |
| C. | Extended format |
| D. | None of the above |
| Answer» C. Extended format | |