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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 difference between interrupt and system call?
A processor executes its instructions one after another. One of the instructions it can execute is a subroutine call, where it suspends executing the current set of instructions, goes off and executes another set and then returns. This is referred to as 'calling a subroutine.' A 'system call' is a call to a subroutine built into the system, rather than a call to one in your own program. Calls and interrupts work similarly, in that to process an interrupt, the processor goes off and executes a different set of instructions and returns. However, calls are synchronous, they occur in fixed order determined by the program, and the processor only has to remember where it was so it can return to the proper place. Interrupts are asynchronous, they can occur at any time, such as when you hit a key on the keyboard, thus the processor has to remember its place and its state, because the interrupt likely has nothing to do with what it was doing at the time of the interrupt.
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Advantages and disadvantages of distributed operating system?
Advantages:
Performance: very often a collection of processors can provide higher performance and better price/performance ratio than a centralized computer.
Distribution: many applications involve, by their nature, spatially separated machines (banking, commercial, automotive system).
Reliability : if some of the machines crash, the system can survive.
Incremental growth: as requirements on processing power grow, new machines can be added incrementally.
Sharing of data/resources: shared data is essential to many applications (banking, computer supported cooperative work, reservation systems); other resources can be also shared (e.g. expensive printers).
Communication: facilitates human-to-human communication
Disadvantages:
Security problems: sharing generates the problem of data security.
of developing distributed software: how should operating systems, programming languages and applications look like?
Networking problems: several problems are created by the network infrastructure, which have to be dealt with: loss of messages, overloading.
C is not an operating system, but a programming language.
An OS is a piece of software that sits between other software and hardware, facilitating communication between applications and devices, in an uniform way.
A programming language is a set of rules, like the English grammar. Any text that satisfies the rules can be compiled, resulting in a piece of software that can then be run in an OS.
C is such a programming language, popular for systems and other low level programming. It is notorious for its portability (you can write code in C and compile it for many OS's), flexibility and degree of control offered to programmer. Also notable is the fact that many OS's are originally written in C or it's off-shoot C++.
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Does a microwave oven has a built-in operating system?
No. Microwaves are created with discrete logic chips, like timers. They have no actual programming code, just properly designed circuits.
Which operating system has tcpip built into it?
Lots of operating systems include a TCP/IP stack. These include Windows (NT/98/2000/ME/XP/Vista), Mac OS X, Linux, FreeBSD, and Solaris.
What are the capabilities and limititions of a computer?
what are the capabilities and limitations of a computer...
What is the difference between preemptive and non preemptive scheduling?
1.) in preemptive scheduling we prempt the currently executing process,
in non preemptive scheduling we allow the current process to finish its CPU burst time...
2.) in preemptive scheduling the process is forcibly sent to waiting state when a process with higher priority comes to CPU,
in non preeemptive scheduling the process at running state can not be forced to leave the CPU until it completes........
Essential properties of Interactive operating system?
The system must process data immediately, and cannot wait like a batch OS would
How do you know what operating system you are using?
Most people ask their parents, because it was the parents who put it on, but if you don't live with your parents and they have nothing to do with your PC there are a couple of signs. The start bar can be a bit of a giveaway. * A black bar with a blue cirle that has the windows flag (on the circle) Means Windows Vista. * A blue bar with a green button that says start on it means Windows XP. * A bar with lots of icons means it's something from apple, but I wouldn't know anything about that.
What are the 4 main functions that all operating system provide?
Well, the most fundamental probably are:
- processor management
- memory management
- file management
- device management (in some OSes, devices are represented as files)
what are the four functions that all operating systems provide?
What is the importance of device drivers?
Device drivers are a set of software instructions that control the interface between a computer and a connected peripheral device. Device drivers tell your machine what the device is, what the device does, and all the other instructions needed for proper operation. For instance, Windows does not ship with a specific device driver set for all the features in your new Logitech keyboard that has custom buttons.
Ref:
http://www.driverstorer.com/help.html
Operating system and utility system software?
Operating systems are essential for running a computer. However as part of the operating system, there are often other programs which are not essential to the running of the computer. These are known as utilities. Examples would include things like the . If they were not there, they would not affect the working of your computer.
What is the maximum size of an NTFS partition?
As it is currently supported by the drivers in Windows, an NTFS partition can be no larger than 256 terabytes.
Multi-tasking means doing more than one task at a time; such as printing, burning c.d's, etc. all at the same time. Multi-programming means running more than one program at one time; such as Microsoft word, AOL, Windows Media Player, all at one time. Multi-processing means that your computer can process more than one thing at a time.
Which Operating System that can support FAT and NTFS?
NetBSD, Windows, and Linux each support both FAT and NTFS file systems.
An operating system is a resource allocated a computer system has many resource that may be required to solve a problem: CPU time, memory space, file storage space and I/O device.
A control program manage the execution of user program to prevent the error and improper computer it is especially concerned with the operation and control the I/O devices.
What operating system do games use?
that depends upon the game, look for the games system requirements to view the operating systems prefered to run said game.
What is meant by graceful degradation in multiprocessor system?
In multiprocessor systems, failure of one processor will not halt the system, but only slow it down
by sharing the work of failure system by other systems. This ability to continue providing service is
proportional to the surviving hardware is called graceful degradation.
What function of file system in operating system?
File system in OS provide the way to create and access the files.
How the memory is allocated to files and how the addresses are saved regarding to each file.
All this is about the address translation and calculation for files.
The reason people need a Searching Technique is from realising how much information is on a modern computer. Depending on the Operating System you are using there are ways to start a search of - the computer you are sitting in front of, the network you are conected to, any other storage devices that are connected to the computer you are in front of. The Operating System help system is a form of search.
What are reasons why you divide an operating system into kernel mode and user mode?
So normal programs can't deliberately crash other programs or cause them to malfunction.
Also, to protect hardware from malicious software.
What are the requirements of operating system for database management system?
A Database Management System ( DBMS ) is a set of computer programs that controls the creation, maintenance, and the use of a database. It allows organizations to place control of database develop.
What are all the major PC operating system?
I will take a stab at this answer. DOS 1 through 9. Then came Windows 95, Windows 98, Windows ME, Windows 2000, Windows XP, Windows Vista, Windows 7.
