CompTIA Linux+ (XK0-004) — Question 250

In a Linux system the first stage of the boot process is a hardware test using the BIOS. Once the hardware test is completed, control is passed to UEFI to begin the first-stage Linux boot process.
To which of the following categories does UEFI belong?

Answer options

• A. Software
• B. Device driver
• C. Firmware
• D. Hardware

Correct answer: C

Explanation

UEFI is classified as firmware because it provides the essential low-level software interface between the operating system and the hardware. The other options are incorrect; software refers to applications, device drivers are specific to hardware components, and hardware itself denotes physical components, which UEFI is not.