31. Which of the following is an example of a computer output device?
a) keyboard
b) scanner
c) printer
d) microphone
Answer: c) printer (an output device allows a computer to display or output data or information, such as a printer or a monitor)
32. What is the purpose of a computer power supply unit?
a) to store data
b) to display data
c) to process data
d) to provide power to the computer components
Answer: d) to provide power to the computer components (a power supply unit, or PSU, is a hardware component that provides power to the internal components of a computer, such as the motherboard, CPU, and hard drive)
33. Which of the following is an example of a computer network topology?
a) bus
b) laptop
c) desktop
d) printer
Answer: a) bus (a network topology refers to the physical or logical layout of a computer network, such as bus, star, or ring)
34. What is the purpose of computer encryption?
a) to store data
b) to process data
c) to display data
d) to protect data from unauthorized access
Answer: d) to protect data from unauthorized access (encryption is the process of encoding data in a way that can only be deciphered with a key, password, or other authentication mechanism)
35. Which of the following is an example of a computer algorithm?
a) Microsoft Excel
b) Google Search
c) Adobe Photoshop
d) QuickSort
Answer: d) QuickSort (an algorithm is a set of instructions or steps used to solve a specific problem or perform a specific task, such as QuickSort, a sorting algorithm used in computer science)
