51. Which of the following is an example of a computer output device?
a) printer
b) keyboard
c) scanner
d) mouse
Answer: a) printer (an output device allows a computer to provide information or output to the user, such as a printer, monitor, or speaker)
52. What is the purpose of computer cache memory?
a) to store data permanently
b) to process data
c) to display data
d) to temporarily store frequently accessed data for faster access by the CPU
Answer: d) to temporarily store frequently accessed data for faster access by the CPU (cache memory is a type of volatile memory used to temporarily store frequently accessed data for faster access by the CPU)
53. Which of the following is an example of a computer file format?
a) MP3
b) HTTP
c) FTP
d) DNS
Answer: a) MP3 (a file format is a standardized way of organizing and storing data or information, such as MP3 for audio files, JPEG for image files, or PDF for document files)
54. What is the purpose of computer encryption?
a) to store data
b) to process data
c) to display data
d) to protect data by encoding it so that only authorized users can read it
Answer: d) to protect data by encoding it so that only authorized users can read it (encryption is the process of encoding data or information to protect it from unauthorized access or theft)
55. Which of the following is an example of a computer network protocol?
a) HTTP
b) MP3
c) JPEG
d) PDF
Answer: a) HTTP (a network protocol is a set of rules and standards used for communication between devices on a network, such as HTTP for web browsing, FTP for file transfer, or SMTP for email)
