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Operating Systems
Operating systems, both proprietary and open-source, include those produced by Microsoft, Linux, and Apple Mac
4,423 Questions
What is the main difference between a preemptive scheduler and a non-preemptive scheduler?
Non-preemptive scheduler gives a process control of computer until it gives it up.
Preemptive scheduler ensures that all processes are given equal(or different) priority, so they run only for a short amount of time, before control is given to another process.
Which means that preemptive system is capable of running many processes 'at once', without crashing when one process refuses to give up CPU control
If a bug like infinite loop, or a process refusing to give up control(a virus for example) is encountered, only thing left to do is to reset the system.
How do you turn your computer off?
Select Control Panel > Power Management.
Select the Advanced tab.
You can choose of having Windows go in to Standby mode, or have Windows Shutdown your computer - when you press the power button.
Then windows with automatically shut down when you power off. (Assuming you have an ATX power supply)
For Win 98SE, Microsoft has released a Shutdown Supplement to combat Windows 98 Second Edition Shutdown problems.
Uplug the computer cord. Or you can hit the power button on the front of the computer.
A Simpler WayThe Alt-F4 hotkey automatically closes whatever program windows is focused on. If there are no programs running, Alt-F4 shuts the system down. So pressing Al-F4 repeatedly will close all your programs out one by one & then shut the machine down.Most modern computers can be shut down by simply pressing the power button. Doing so will trigger the shutdown routine just as if you had clicked start > shutdown. In your system settings, in the screensaver tab you can alter the behavior of this button, making it shutdown, hibernate, or suspend the machine, whatever your preference.
What are the advantages of a torrens system?
The Torrens system of land registration was created in Australia, imported to the US. Torrens, and was supposed to be a "guaranty" of title to real estate issued by the government office that otherwise typically recorded chain of title, so that if your title was attacked and you were damaged, the Torrens' system was supposed to compensate you. The compensation fund was supposed to be raised primarily by fees associated with the registration process, and was supposed to be so "fool-proof" that the likelihood of a claim was supposed to be virtually eliminated. Something like certificates of title to car ownership. Ownership was on the front side of the certificate and any and all limitations on ownership (mortgages, easements, etc.) were supposed to be posted on the back. When you sold you turned in the certificate and the government was supposed to examine title and issue you a new certificate in conformity with your contractual rights and if the government would not because of a title defect you theoretically had a right of action under the old certificate if the government was wrong and then the government would be able to go after the seller or third party who created the problem. Theoretically if you had a mortgage released you would turn in the certificate for the mortgage to be removed or cancelled on the certificate.
I practiced real estate in Cook County, Illinois in the years before Torrens was abolished here and title insurance was returned to private companies like Fidelity/Chicago Title, Ticor and First American Title. It was run by the Cook County government and was hopelessly mired in bureaucracy. You could close on your purchase on day X and it could take SEVERAL YEARS before you got a new certificate and in the interim most people got title insurance too because there was no way to guaranty title until later and anything could happen in the interim. Good idea, bad implementation.
A host operating system is the operating system that is in direct communication with the hardware. It has direct hardware access to kernel mode and all of the devices on the physical machine. The guest operating system runs on top of a virtualization layer and all of the physical devices are virtualized. A host operating system should be as modular and thin as possible to allow the virtualization of the hardware to be as close to the physical hardware as possible, and so that dependencies that exist in the host operating don't restrict operation in the guest operating system.
What operating system are used to control and coordinate computers that are linked together?
NOS (Network Operating System)
What is principle of concurrency in operating system?
on a single processor machine the OS support for concurrency allows multiple application to share resources in such a way that applications appear to run at a same time. since a typical application does not consume all resources at a given time.
a careful coordination can make each application as if runs the entire machine
Three functional features of multiuser operating system?
"Having your own account with a picture as a background" Jhonn Green
"each person has there own user account" mac osx install
"A picture??" ME!
What is platters in term of operating system?
A round magnetic plate that is part of the hard disk. Hard disks can contain up to a dozen platters.
What is the 5 latest operating systems?
The 5 "latest" OS's would likely all be various Linux and Unix or BSD based distributions. They update much quicker then windows or mac-os.
any and all information about the job is saved before the contexted switch anything already completed is also saved.
What operating system allows you to install a new OS without disturbing the old one?
Linux will easily allow you to install it along with other OS on a separate partition or even same partition through frugal install. You can even live boot from a CD which will not affect anything on your PC.
What do you called utilities purchased from a vendor to enhance operating system features?
third-party "enhancement" utility software
Describe the action taken by a kernel to context switch between kernel level threads?
Context switching between kernel threads typically requires saving the value of the CPU registers from the thread being switched out and restoring the CPU registers of the new thread being scheduled.
What operating system does xbox 360 use?
The Xbox 360 runs its very own operating system. The OS has its roots in the original Xbox OS which in turn is based on the windows 2000 kernel. However due to the very different architecture of Xbox 360 hardware compared to a normal PC it has massively changed. (The 360 actually uses what is known as the PPC architecture and is very similar to the Cell processor in the playstation 3 - they were developed side by side by IBM).
See also:http://www.windowsfordevices.com/news/NS3988467635.html
What is the function of kernal in operating system?
In computing, the kernel is a computer program that manages I/O (input/output) requests fromsoftware, and translates them into data processing instructions for the central processing unit and other electronic components of a computer. The kernel is a fundamental part of a modern computer's operating system.[1]
What is a single user operating system and a network?
it allows only one user to run a same program as another user at a same time
How does the operating system help you keep your computer organized?
The operating system keeps all programs organized. It also allows you to partition hard disks and store files on the computer.
How do you get an operating system pact to rectify a potential break of system security?
HOW DO I GET AN OPERATING SYSTEM patch to rectify a potential of system of security
What are three ways the operating system manages the computer's hardware?
it helps in the following
1-monitors system performance.
2-provides a user interface.
3-multi-tasking capability
4-etc
