System software: Device drivers MCQs Quiz | Class 9
This quiz is for Class IX students studying Computer Applications (Code 165), as per the CBSE curriculum. It covers Unit 1: Basics of Information Technology, focusing on the topic of System Software: Device Drivers. Key concepts include the function of drivers, the hardware-software interface, and common examples. Attempt all 10 questions and click ‘Submit Quiz’ to see your score and download your answers in PDF format.
Understanding Device Drivers
A device driver is a crucial piece of system software that acts as a translator between a hardware device and the operating system (OS) or other application programs. Think of it as an instruction manual that tells the OS how to operate a specific piece of hardware, like a printer, graphics card, or mouse.
Key Concepts of Device Drivers
1. The Hardware-Software Interface
The primary role of a driver is to bridge the gap between hardware and software. Hardware components speak their own unique, complex language. The operating system, on the other hand, needs a simple, standardized way to send commands like “print this page” or “show this image”. The driver receives these standard commands from the OS and translates them into the specific, low-level instructions that the hardware device can understand.
2. Why are Drivers Necessary?
Without drivers, the operating system would need to have built-in knowledge of every single piece of hardware ever created. This is impractical and impossible. By using drivers, hardware manufacturers can create new devices, and as long as they provide a driver for major operating systems (like Windows, macOS, or Linux), the device will work seamlessly.
3. Common Examples and Plug and Play (PnP)
Most modern operating systems support a feature called “Plug and Play”. When you connect a new device (like a USB mouse), the OS automatically detects it, searches for a suitable driver from its pre-installed library or the internet, and installs it without user intervention. Some common devices requiring drivers include:
- Graphics Cards: To manage screen resolution, color depth, and 3D acceleration.
- Printers & Scanners: To convert digital documents into printed pages or vice-versa.
- Network Cards: To manage internet and local network connections.
- Sound Cards: To process and output audio.
- Keyboards & Mice: Basic drivers are usually included with the OS.
Device vs. Driver Function
This table illustrates the relationship between a device and its driver’s function:
| Device | Driver’s Primary Function |
|---|---|
| Graphics Card | Renders images and manages screen resolution. |
| Printer | Translates document data into a format the printer understands. |
| Network Card | Manages the sending and receiving of data over a network. |
| Mouse | Tracks movement and clicks, sending signals to the OS. |
Quick Revision Points
- A device driver is a type of system software.
- It enables communication between the OS and a hardware device.
- It abstracts the hardware’s complexity, providing a simple interface for the OS.
- Drivers can be generic (for standard devices like keyboards) or specific (for high-end graphics cards).
- Updating drivers can improve performance, fix bugs, and add new features to a device.
Extra Practice Questions
- Why would a computer’s display show a very low resolution after a fresh OS installation?
- What is the difference between a generic driver and a manufacturer-specific driver?
- Explain the role of a driver when you click ‘Print’ in a word processor.
- Can a hardware device work without a driver? Explain why or why not.
- Where does the operating system typically look for a driver when a new device is connected?
