Introduction to Computing MCQs with Answers
Practice important Introduction to Computing MCQs with answers and explanations.
Chapter: 24
Q401:
What is the binary addition result of 0.101 and 0.011?
A. 0.1
B. 0.11
C. 0.1
D. 0.111
Correct Answer:
D
Chapter: 24
Q402:
What is the key concept to remember when adding binary fractions?
A. Align the radix point before performing addition
B. Ignore the radix point and add normally
C. Convert fractions to decimal before adding
D. Treat fractions as integer values
Correct Answer:
A
Chapter: 25
Q403:
What is the most popular system for representing integers in computers?
A. Binary notation
B. Two’s complement notation
C. ASCII code
D. Decimal notation
Correct Answer:
B
Chapter: 25
Q404:
How many bits are typically used for representing integers in modern computers?
A. 8 bits
B. 16 bits
C. 32 bits
D. 64 bits
Correct Answer:
C
Chapter: 25
Q405:
In 2’s complement notation, what does the leftmost bit represent?
A. The integer value
B. The sign bit
C. The magnitude of the number
D. The overflow
Correct Answer:
B
Chapter: 25
Q406:
How do you convert a positive integer to its negative counterpart in 2’s complement notation?
A. Invert all bits
B. Copy the number directly
C. Add 1 to the binary representation
D. Subtract 1 from the binary representation
Correct Answer:
A
Chapter: 25
Q407:
What is the 2’s complement representation of -7 if the 4-bit representation of 7 is 0111?
A. 1001
B. 1010
C. 1110
D. 110
Correct Answer:
A
Chapter: 25
Q408:
How does addition in 2’s complement notation compare to binary addition?
A. It requires a different method
B. It uses the same method
C. It is performed in decimal first
D. It requires converting to ASCII
Correct Answer:
B
Chapter: 25
Q409:
What is the maximum positive number that can be represented with 4 bits in 2’s complement notation?
A. 7
B. 8
C. 15
D. 16
Correct Answer:
A
Chapter: 25
Q410:
What happens if you add two numbers and the result exceeds the maximum value in 2’s complement notation?
A. Overflow occurs
B. The result is negative
C. The result is truncated
D. The result is converted to decimal
Correct Answer:
A
Chapter: 25
Q411:
How many bits are used to represent the maximum positive value of 2,147,483,647 in modern computers?
A. 16 bits
B. 24 bits
C. 32 bits
D. 64 bits
Correct Answer:
C
Chapter: 25
Q412:
What was the issue with the hospital system on September 19, 1989, related to 2’s complement notation?
A. Overflow occurred due to date calculation
B. Incorrect temperature readings
C. Faulty medical equipment
D. Data loss due to encryption failure
Correct Answer:
A
Chapter: 25
Q413:
What is the result of adding 5 and 4 in 4-bit 2’s complement notation?
A. 1001
B. 100
C. 1111
D. 1
Correct Answer:
A
Chapter: 25
Q414:
How can overflow be detected in 2’s complement notation?
A. By checking the sign bit
B. By converting to decimal
C. By checking the result against the maximum value
D. By recalculating the binary sum
Correct Answer:
A
Chapter: 25
Q415:
What does a 2’s complement notation work well with, compared to other methods?
A. Handling both positive and negative integers
B. Only positive integers
C. Only negative integers
D. Floating-point numbers
Correct Answer:
A
Chapter: 25
Q416:
What was the maximum number represented by 16-bit 2’s complement notation?
A. 65535
B. 32768
C. 64000
D. 16384
Correct Answer:
B
Chapter: 25
Q417:
If the result of an addition exceeds the maximum value of a bit pattern, what might be necessary?
A. Using more bits
B. Reducing the number size
C. Converting to a different base
D. Ignoring the overflow
Correct Answer:
A
Chapter: 25
Q418:
In 2’s complement notation, how are positive and negative numbers handled similarly?
A. By using the same addition method
B. By using different addition methods
C. By converting to decimal first
D. By applying binary multiplication
Correct Answer:
A
Chapter: 26
Q419:
What is the primary use of Excess Notation?
A. To represent floating-point numbers
B. To represent integer values
C. To store character data
D. To encode images
Correct Answer:
B
Chapter: 26
Q420:
In Excess notation, what is used to represent zero?
A. The first bit pattern with 0
B. The first bit pattern with 1
C. The most significant bit pattern
D. The least significant bit pattern
Correct Answer:
B