
A Level Computer Science Quiz
Quiz
•
Computers
•
12th Grade
•
Practice Problem
•
Easy
Simon Withey
Used 5+ times
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the binary representation of the decimal number 23?
10101
10111
11011
11101
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the hexadecimal equivalent of the binary number 11010110?
D6
B6
C7
E6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes a lossless compression technique?
Data is permanently removed to reduce file size
Data can be perfectly reconstructed from the compressed file
Data is encrypted for security
Data is converted to a different format
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the time complexity of binary search in Big O notation?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which sorting algorithm is generally considered the most efficient for large, unsorted datasets?
Bubble Sort
Insertion Sort
Merge Sort
Selection Sort
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a function of the operating system?
Memory management
Virus scanning
File management
Process scheduling
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which register in the CPU holds the address of the next instruction to be executed?
Accumulator
Program Counter
Memory Address Register
Instruction Register
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