Operating systemsLesson 1 of 1 in the course File systems and I/O

Device Drivers: Interfaces, Frameworks, Virtualization, and Security

5 flashcards · 5 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

A device driver connects software to a particular hardware device. It provides a consistent way for applications and the operating system to request hardware services without needing to understand every device’s internal design.

A device driver is software that operates or controls a particular type of device attached to a computer. It exposes a software interface that other programs can use to request hardware functions.

All flashcards

Device driver
Software that controls or communicates with a hardware device and exposes its functions through a software interface.
Hardware abstraction
Hiding device-specific details behind a software interface that applications can use.
Virtual device driver
Software that emulates a device for a virtual machine or another software environment.
Miniport driver
A hardware- or function-specific component within a larger driver stack.
BYOVD
An attack that abuses a signed but vulnerable third-party driver to perform malicious operations.

Quiz questions

  1. What is a common stability benefit of running a driver in user mode?Answer: A driver fault is less likely to overwrite kernel memory.
  2. Which tasks can KMDF provide standard implementations for?Answer: I/O cancellation, power management, and plug-and-play support.
  3. How are drivers commonly organized in a microkernel design such as Minix?Answer: They can run as separate processes that provide input-output services.
  4. What happens in a Bring Your Own Vulnerable Driver (BYOVD) attack?Answer: An attacker abuses a known weakness in a signed third-party driver.
  5. In a virtual machine, what does a virtual device driver do?Answer: It handles guest requests by emulating device behavior.

Based on the Wikipedia article Device driver, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.

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