could anyone shed any light on this question.

October 22, 2010 at 02:28:51
Specs: Microsoft Windows XP Professional, 3.2ghz / 3gig
At work this question is causing much discussion. The paper says the answer is C. But as I said it is causing much discussion. I would need some evidence to back up the answer.

At which of the five layers of the operating system model does a device driver work?

A File system
B Input/output
C Kernel
D Memory management

any help would be appreciated
thanx in advance
Auldy


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#1
October 22, 2010 at 05:29:40
Stated you reported "five" layers but just four are present in the answers, I would say C, at kernel layer.

Your question however would require a description of the referred model of OS since there is no common theory about how to describe an operating system. My answer is bulit by excluding

A There are drivers not related to File System
B There are drivers not related to I/O
D Drivers are not in charge of me,ory management.

In legacy operating systems however the drivers are part of the I/O subsystem i.e. the BIOS while the Kernel manages processes and memory. In those environments there were no layers so again an exact info about the reference model is needed.


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#2
October 22, 2010 at 07:03:23
I'm not sure what model of the OS you're using, but I'd consider A, B, and D to be all services in an OS, not a "place" where code runs.

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#3
October 24, 2010 at 14:10:34
hey folks
thanks for the replies. This is part of a multi choice exam(I'm a lecturer at college). This paper was not designed by the teaching staff where I work. The question was set by SQA the governing body for education in Scotland. Off the top of my head I don't think it is OS specific(I will check when I go into work tomorrow), although its starting to look like, unless it IS OS specific the answers will vary.

will read the exam paper tomorrow and post back in here.

any help would be appreciated
thanx in advance
Auldy


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