Unified Extensible Firmware Interface (UEFI) provides support for 64-bit CPU operations, a full GUI and mouse operations, and better boot security.

• A. BIOS
• B. UEFI
• C. Kernel
• D. SELinux

Answer: (B)

UEFI provides a modern firmware interface that replaces the older BIOS, enabling 64-bit CPU operations, a graphical user interface with mouse support, and stronger boot security. The 64-bit capability allows the firmware and early boot code to run in 64-bit mode, giving more memory and advanced functionality during startup. A full GUI and mouse support make setup and configuration easier, moving beyond the text-based menus of legacy firmware. Secure Boot adds cryptographic checks to verify the integrity of the bootloader and OS before loading, helping protect against boot-time malware. These features collectively reflect the purpose of UEFI as the modern firmware interface for contemporary systems.

BIOS is the older firmware that lacks these modern capabilities; the kernel is the operating system’s core that runs after boot, not the firmware interface; SELinux is a security policy component within the OS, not a firmware interface.