21. What is the main difference between a mainframe computer and a server computer?
A. Processing power
B. Storage capacity
C. Network connectivity
D. Operating system
22. Which type of computer is commonly used for gaming, entertainment, and home use?
A. Personal computers (PCs)
B. Workstations
C. Servers
D. Mainframes
23. What is the main function of a tablet computer?
A. Gaming
B. Web browsing
C. Video editing
D. Email and productivity
24. Which type of computer is designed to run a single program or set of programs and is used for a specific task?
A. Personal computers (PCs)
B. Workstations
C. Servers
D. Single-purpose computers
25. Which type of computer is commonly used for scientific research and simulations, weather forecasting, and nuclear energy research?
A. Personal computers (PCs)
B. Workstations
C. Servers
D. Supercomputers
