Which of the following is NOT a characteristic of a mainframe computer?

• A. Supports multiple users
• B. Is portable
• C. Handles large-scale data processing
• D. Connects through terminals

Answer: (B)

A mainframe computer is designed for large-scale data processing and can support multiple users simultaneously, making it ideal for enterprises that require robust computing power. One of the key characteristics of mainframe computers is their ability to handle vast amounts of data quickly and efficiently, which is critical for businesses that depend on processing extensive datasets.

Mainframes are typically connected through terminals, allowing multiple users to access the powerful computing resources from various locations. This connectivity is essential for organizations that need to maintain productivity while managing large operations.

The characteristic that stands out as not applicable to mainframe computers is portability. Mainframes are large systems designed to remain in a fixed location; they are not built to be transported easily like laptops or other portable devices. This substantial fixed infrastructure is one of the defining features of mainframes, emphasizing their role in centralized computing environments rather than in mobile usage scenarios.