Introduction To Java Programming And Data Structures 2026 Practice Test Sheet Full Solutions Correct Answers Guaranteed Pass

INTRODUCTION TO JAVA PROGRAMMING AND
DATA STRUCTURES 2026 PRACTICE TEST
SHEET FULL SOLUTIONS CORRECT ANSWERS
GUARANTEED PASS

◉ List five major hardware components of a computer.
Answer: Five major hardware components: CPU, Memory, Storage
Devices, Input/Out Devices, and Communication Devices.


◉ _ is the physical aspect of the computer that can be seen.
A. Hardware
B. Software
C. Operating system
D. Application program
Answer: A. Hardware


◉ _ is the brain of a computer.
A. Hardware
B. CPU
C. Memory
D. Disk

,Answer: B. CPU


◉ _ is the physical aspect of the computer that can be seen.
A. Hardware
B. Software
C. Operating system
D. Application program
Answer: A. Hardware


◉ __________ is the brain of a computer.
A. Hardware
B. CPU
C. Memory
D. Disk
Answer: B. CPU


◉ The speed of the CPU may be measured in __________.
A. megabytes
B. gigabytes
C. megahertz
D. gigahertz
Answer: C. megahertz

, D. gigahertz


◉ Why do computers use zeros and ones?
A. because combinations of zeros and ones can represent any
numbers and characters.
B. because digital devices have two stable states and it is natural to
use one state for 0 and the other for 1.
C. because binary numbers are simplest.
D. because binary numbers are the bases upon which all other
number systems are built.
Answer: B. because digital devices have two stable states and it is
natural to use one state for 0 and the other for 1.


◉ One byte has ________ bits.
A. 4
B. 8
C. 12
D. 16
Answer: B. 8


◉ Which of the following is not permanent storage devices?
A. floppy disk
B. hard disk