A system hang/crash affects which function of the computer?

• A. Data storage performance
• B. Ability to present alerts and displays
• C. Peripheral device control
• D. Power management

Answer: (B)

A system hang/crash most directly disrupts the user-facing interface, preventing the computer from presenting alerts and displays. When the system stops responding, you can’t see error messages, warnings, or status updates, and you can’t interact with on-screen dialogs or menus. That loss of visible communication to the user is the defining symptom, which is why this option is the best fit.

Data storage performance might be impacted in a crash, but it isn’t what the user typically notices first. Peripheral device control and power management can also be affected in some cases, but they’re not the primary, most immediate function that fails to convey information to the user during a hang.