The most important reason why we should use ROM-BIOS and DOS function is: whther we want or we don't these function always occupy some memory whenever the computer is on.Common sense tells us we better use them.
Some of the ROM BIOS function overlap with their DOS counterparts.For ex, to write something to a disk, there exists a ROM BIOS function as well as a DOS function.Naturally, the Question arises which one should we perfer
The ROM BIOS functios work directly with the h/w and peripherals devices, performing some of the systems's most fundamentals tasks. Such as reading data from disk or writing data to the screen.Dos functios are often built process more efficient.
This is not to say that u should always use ROM BIOS functions since they are available.ODS or the hgh level lang often provide the same services as the ROM BIOS functions, but in aform that is easier to use in u'r programs.However, than what DOs functions or the high level lang functions can provide, ROM BIOS functions are usually the answer.
A Comparison of the Security of
Windows NT and UNIX most valuable which u can download and gone thru it in future.†
This paper presents a brief comparison of two operating systems, Windows
NT and UNIX. The comparison covers two different aspects. First, we
compare the main security features of the two operating systems and then
we make a comparison of a selection of vulnerabilities most of which we
know have been used for making real intrusions. We found that Windows
NT has slightly more rigorous security features than “standard” UNIX but
the two systems display similar vulnerabilities. The conclusion is that there
are no significant differences in the “real” level of security between these
systems........DOWN_LOAD
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The most important reason why we should use ROM-BIOS and DOS function is: whther we want or we don't these function always occupy some memory whenever the computer is on.Common sense tells us we better use them.
Some of the ROM BIOS function overlap with their DOS counterparts.For ex, to write something to a disk, there exists a ROM BIOS function as well as a DOS function.Naturally, the Question arises which one should we perfer