A computer that is more powerful than a server and used to process large numbers of transactions simultaneously is called a

• A. Laptop
• B. Supercomputer
• C. Workstation
• D. Mainframe

Answer: (D)

This question centers on how computer systems scale to handle many transactions at once. A mainframe is designed for large-scale, high-volume transaction processing with exceptional reliability and uptime. It can support thousands of concurrent users and intensive I/O, which is why banks, airlines, and large organizations rely on it for core applications that must run smoothly 24/7.

A laptop is portable and consumer-oriented, not built for massive concurrent workloads. A workstation is powerful for professional tasks but typically serves fewer users and smaller-scale workloads. A supercomputer excels at extremely heavy scientific calculations and simulations, not the ongoing daily processing of vast numbers of transactions.