research topic

A. Research the size of operating system software by finding the amount of secondary storage (disk) space required by different versions of the same operating system or different operating systems. if their sizes are substantially different, explain why that may be the case, such as platform issues, features, etc. Cite your sources.

answer:

the different versions of of operating system have different size, features, platform, issues, etc... it is because it evolves by day by year and terms of with its size, the older the version of the operating system and secondary storage required .

B.consult crrent literature to research file-naming conventions for four defferent operating defferent oparating systems.Note the acceptable range of characters, maximum length, case sentivity, etc. Give example of both acceptable and uncceptable filename.For extra credit, explain how the file manager for those operating seystem shorten long filenames(if they do so) in their imternal lists to make them easier to manipulate. Cite your sources.

anwer:
Comodore 64: case sensitive/case-preservation, can use any character that uses an 8-bit set, : and = are reserved characters, $ is a reserved word and number of characters depend on the drive used but most drives limit it to 16characters.

Mac OS9 : supports HFS and HFS+File system and may be up to 32 chacacters long. Mac OSX supports HFS and UFS and may be up to 255 characters long. Colon (:) is used as a separator. File names and folders may contain any characters except colon(:) and forward slash(/). File names are not case sensitive. Acceptable: MacHD:Documents:myfile, Unacceptable: MacHD:Documents/usan:myfile

DEC VAX VMS: is not case sensitive and may be up to 32 characters per component;earlier 9 per component; laterally, 255 for a file name and 32 for an extension. A full file specification includes nodename, diskname,directories, filename, extension and version in format.Acceptable: OURNODE::MYDISK:[THISDIR.THATDIRFILENAME.EXTENSION;2 Unacceptable:MYDISK:[THISDIR.THATDIRFILENAME.EXTENSION;2

source:
http://newitsc1405.blogspot.com/2011/02/chapter-8-research.html