Introduction to Computing MCQs with Answers
Practice important Introduction to Computing MCQs with answers and explanations.
Multiple Choice Questions
Q601: If you want to change the third bit from the high-order end to 0 without disturbing other bits, which mask would you use with AND?
- A: 100000
- B: 11011111
- C: 11110000
- D: 1111
View Answer
B
Q602: When using masking to filter colors in an RGB image, what is a common use of the AND operation?
- A: To isolate and remove a specific color component
- B: To combine color components
- C: To invert the color values
- D: To shift color values
View Answer
A
Q603: What does the XOR operation do to a bit string when used with a mask of all 1s?
- A: Duplicates the bit string
- B: Inverts the bit string
- C: Sets all bits to 0
- D: Sets all bits to 1
View Answer
B
Q604: What is a right circular shift?
- A: Moving bits to the left and discarding the leftmost bit
- B: Moving bits to the right and placing the rightmost bit in the leftmost position
- C: Moving bits to the left and filling with zeros
- D: Moving bits to the right and filling with ones
View Answer
B
Q605: What happens during a logical shift operation?
- A: The bit that falls off the edge is placed in the hole at the other end
- B: The bit that falls off is discarded and the hole is filled with zero
- C: The bit that falls off is stored in a temporary register
- D: The bit that falls off is replaced with the sign bit
View Answer
B
Q606: How does a left shift operation affect a binary number?
- A: It divides the number by two
- B: It multiplies the number by two
- C: It inverts all bits
- D: It rotates the bits circularly
View Answer
B
Q607: What is the result of a right arithmetic shift?
- A: The bit that falls off the right end is discarded and zero is placed in the leftmost end
- B: The bit that falls off is placed at the left end, and the sign bit remains unchanged
- C: The bit that falls off is placed at the left end and the sign bit is also shifted
- D: The bit that falls off is replaced with the original bit in the hole
View Answer
B
Q608: What term is used for a shift that preserves the sign bit?
- A: Logical shift
- B: Circular shift
- C: Arithmetic shift
- D: Rotational shift
View Answer
C
Q609: What is a circular shift?
- A: Shifting bits to the right or left and discarding the bit that falls off
- B: Shifting bits to the right or left and placing the bit that falls off at the other end
- C: Shifting bits and filling the vacant space with a zero
- D: Shifting bits and replacing the lost bit with the sign bit
View Answer
B
Q610: How is division by two accomplished in binary operations?
- A: Left shift
- B: Right shift
- C: Circular shift
- D: Arithmetic shift
View Answer
B