51. Which of the following is an example of a file extension for an image file?
a) .docx
b) .xls
c) .jpg
d) .mp3
Answer: c) .jpg
52. Which of the following is an example of a file extension for a video file?
a) .txt
b) .jpg
c) .mp4
d) .pdf
Answer: c) .mp4
53. Which component of a computer system performs arithmetic and logical operations?
a) RAM
b) Hard disk
c) CPU
d) GPU
Answer: c) CPU
54. Which of the following is a type of volatile memory?
a) ROM
b) Cache memory
c) Hard disk
d) Flash memory
Answer: b) Cache memory
55. Which type of software is responsible for managing and controlling hardware resources?
a) System software
b) Application software
c) Programming software
d) Database software
Answer: a) System software
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