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Mar
9
comment If DOS is single-tasking, how was multitasking possible in old version of Windows?
The 286 (a 16-bit processor) introduced protected mode, and with it, almost all of the features that make preemptive multitasking worth doing. But protected mode was almost entirely incompatible with DOS at the time (many real-mode assumptions about segments don't hold true in protected mode without a lot of hackery), and switching back to real mode on the 286 required a CPU reset.
Jan
24
awarded  Critic
Jan
24
awarded  Citizen Patrol
Mar
26
awarded  Organizer
Feb
27
revised How to determine the number of usable host in classful subnetting?
put image in the question, rather than just giving a link to it
Feb
27
suggested approved edit on How to determine the number of usable host in classful subnetting?
Nov
10
comment What is the most likely reason for all the lights to go out on the ethernet router every 5 seconds?
Seems to me that we'd need to know the brand/model of your equipment. There isn't a standard "reset every 5 seconds" mode that i'm aware of.
Nov
4
revised How to determine the number of usable host in classful subnetting?
edited body
Nov
4
revised How to determine the number of usable host in classful subnetting?
added 1247 characters in body
Nov
4
revised How to determine the number of usable host in classful subnetting?
added 1247 characters in body
Nov
3
revised How to determine the number of usable host in classful subnetting?
added 31 characters in body
Nov
3
answered How to determine the number of usable host in classful subnetting?
Nov
2
answered Is there a command to determine the compression ratio of a tar.bz2 file?
Oct
25
comment Can a Windows 8 machine safely run without an anti-virus?
For reference: The best protection against malware is not being a chump. Know what you're downloading and installing. I haven't needed AV in probably 10 years, because it's not hard to know when that 23.5KB file isn't really Office 2010 Super-Duper Edition. :P If people did some basic sanity checks before randomly saying "yes", malware infestations would practically disappear.
Oct
23
awarded  Tag Editor
Oct
23
revised What is a child process?
retag (question doesn't really apply to php or sql)
Oct
23
revised
added 175 characters in body
Oct
23
suggested approved edit on What is a child process?
Oct
23
wiki
Oct
23
suggested approved edit on