A software driver that provides a buffer between the hardware and software, and has direct access to the kernel; are also known as VxDs is called a what?

• A. Virtual Device Driver (VDD)
• B. Device Driver
• C. Kernel Module
• D. Firmware Driver

Answer: (A)

The key idea is that a VxD is a kernel‑mode driver in older Windows systems that sits between software and hardware and has direct access to the kernel. A Virtual Device Driver is specifically the Windows 9x term for this kind of driver: it provides a software interface to hardware, acting as a buffer so software talks to the device through the driver rather than touching the hardware directly, while running with privileged access in the kernel.

This makes the option that names it as a Virtual Device Driver the best fit. Other choices describe broader or different concepts: a generic device driver doesn’t specify the Windows 9x VxD architecture, a kernel module is a Linux/Unix term, and a firmware driver implies code embedded in the hardware itself rather than a kernel‑level Windows driver.