INTERVIEW QUESTIONS COMPUTER HARDWARE DETAILS

Question: What is Hal in windows?

Answer: A hardware abstraction layer (HAL) is an abstraction layer, implemented in software, between the physical hardware of a computer and the software that runs on that computer. Its function is to hide differences in hardware from most of the operating system kernel, so that most of the kernel-mode code does not need to be changed to run on systems with different hardware.

A hardware abstraction layer (HAL) is an abstraction layer, implemented in software, between the physical hardware of a computer and the software that runs on that computer. Its function is to hide differences in hardware from most of the operating system kernel, so that most of the kernel-mode code does not need to be changed to run on systems with different hardware. Source: CoolInterview.com

HAL (Hardware Abstraction Layer)
One of the key design features of Windows is that it supports multiple hardware platforms without the need for complete different versions of the OS. This support is accomplished through the HAL, which is implemented via the kernel-mode hal.dll module. All Windows components access hardware via the HAL, and multiple HALs are available that are specific to different hardware platforms. The installed HAL is chosen when the OS is installed (hence, why you can't take a disk from one machine and run it in a machine of a different hardware platform). The available HALs are listed here:

- Standard PC (non-ACPI) - Hal.dll
- MPS Uniprocessor PC - Halapic.dll
- MPS Multiprocessor PC - Halmps.dll
- Advanced Configuration and Power Interface (ACPI) PC - Halacpi.dll
- ACPI Uniprocessor PC - Halaacpi.dll
- ACPI Multiprocessor PC - Halmacpi.dll

The installation process selects the correct HAL and copies it to the %systemroot%system32 folder as hal.dll. The last three HALs in the list are the most common. Source: CoolInterview.com

what is smps Source: CoolInterview.com

If you have the better answer, then send it to us. We will display your answer after the approval.

Rules to Post Answers in CoolInterview.com:-

• There should not be any Spelling Mistakes.
• There should not be any Gramatical Errors.
• Answers must not contain any bad words.
• Answers should not be the repeat of same answer, already approved.
• Answer should be complete in itself.

Name :*
Email Id :*
Answer :*
Verification Code	Not readable? Load New Code
Enter the above shown code: *
	Inform me about updated answers to this question