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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

Real-time operating systemlist 5 other computer systems that could have real time processes?

Audio / video editing

digital signal processing

gaming

encryption / decryption

compression

sensors eg: light sensors on smart phones

Explain the operating system layers that is monolithic?

Early computing was performed on a single processor.

Makes use of a single cpu to execute one or more programs for each application

Ex: A uni-processor

What are the features of real time operating system RTOS?

RTOS is a real time operating system.The important features are :- - The necessary signalling functions between interrupt routines and taskcodes are handled by RTOS. - It works as an independent system with no internal or external interdependencies. - There are no loop descisions in RTOS - The RTOS can suspend one task code subroutine in the middle order to run another - The time lag is veryless compared to other systems - There are no random time variables, this is good for a direct relationship between instruction and process. - Tasks are simpler to write. - Under most RTOS tasks are simply subroutines.

What is the Difference between clustered system and multiprocessor system?

is a number of linked systems, working together closely ,so that they form a single computer

How the OS communicate with CPU?

The OS communicates with the CPU via the "kernel" - which is actually a core part of the OS.

When an operating system is loaded into memory, the kernel loads first and remains in memory until the operating system is shut down again. It should load into a protected portion of memory that cannot be written to by any other process. A computer kernel interfaces between the three major computer hardware components, providing services between:

  • the application/user interface
  • the CPU, memory
  • other hardware I/O devices
The rest of the OS makes calls to the kernel, which then interacts with the CPU (or other hardware). If properly implemented, this enforces the principle of "least privilege" - one of the fundamental tenets of computer security.

Does the operating system provides the means for users to interact with a computer?

the operating system provides the means for users to interact with a computer

Why is windows popular?

because it's very good compared to others and also it got more popular when a 9 yr. old became an engineer for it

Who schedules the scheduler?

Per the NFL Operations website, the schedule is created by computers and 4 league officers. The league officers are Senior Vice President of Broadcasting Howard Katz, Director of Broadcasting Blake Jones, Manager of Broadcasting Charlotte Carey and Senior Director of Broadcasting Michael North .

From the NFL Operations website operations.nfl dot com :

"A formula determines each team's opponents every year, and a rotating schedule ensures that every team plays each of the other 31 at least once in a four-year period.

It takes hundreds of computers in a secure room to spit out millions of possible schedules - a process that sets the stage for the schedule-makers to begin the arduous task of picking the best possible one."

What is the use of virtual memory?

Virtual memory is used to increase the size of working memory in the system main memory by using the locations in secondary storage such as harddisk.

How does the operating system interact with computer?

Simplified it grants you access to the hardware. Without an operating system your computer is just a bunch of chips and cables, it's the OS that tells the processor what to do, manages the memory and lets you, and programs, interact with all the components, so it's the interface between user and hardware.

If you are looking for more specific informations about OS you can find those on many (online-) computer or generic encyclopedias such as wikipedia.

What is the best operating system for graphic designers?

This is quite a debate, and one which I myself had to find the answer to as well. I'm currently a graphic design student, and it seems that most have their own opinions as to which is the best.

For the most part, both Windows and Mac operating systems seem virtually equal in this regard. Personally, I have an Alienware laptop with Windows XP. This is because I find Vista to run much slower overall on any computer, and because I think Windows (overall) is an operating system that allows the user more freedom. Yes, it is true that Windows-based machines are likelier to get viruses and whatnot, but they also permit the user to choosehis own settings and decide to open his computer to something that may be considered harmful, even when it isn't. Thus, Macs end up being a lot safer, but also less compatible with much of the software out there.

That said, it is traditionally believed that Macs render graphics better, presumably because of the displays or graphics drivers only. Also, I'm told and have seen that most art departments and graphic designers seem to prefer Macs to PCs--for the display reasons alone, who knows?

Essentially, I feel that the operating system doesn't make a huge difference (as I have come to use both extensively), but rather you simply want a high-performance machine with plenty of RAM (to run the giant programs) and hard drive space (to store alllll those versions of the same project).

AnswerI have both in my shop, for different reasons.

I do all my designs on Mac, partly because all my fonts are Mac fonts (and I have a pile of them), and partly because the Mac just feels better to me. I can design quicker on an 800MHz G4 than I can on a 2GHz PC.

My Onyx ProductionHouse and EFI Fiery XF RIPs run on Windows. Windows offers cheap brute force, which is important when you're driving four printers from one computer and the printers in question are bigger than your car.

Answer

It depend how much money you want to spend. If you are buying a Mac for $3000 you can easily get Windows PC 64 Bit 6 GB DDR3 Ram under $2000.Majority of people are using Windows and the results are awesome.

It is not a computer (neither Windows or Mac) , it is you brain, your skills how you implement them.

There is no difference at all if you know how to design you can achieve the same result on both.

Three major complications that concurrent processing adds to an operating system?

1. The OS has to keep track of the main memory address space allocated to each process so that a process does not affect or harm other processes data. This is a necessay , for example, a virus may try to destroy or modify other process data.

2. Switching from one process to another process leads to time overhead, this requires storing the current register values and loading the register values of the next process from its PCB(program Control Block).

3. If a running process requires large space in memory then other processs needs to be dumped back to hard disk which again leads to time overhead.

For more information mail to: akhilanger@gmail.com

What mechanism is used to control access to shared files?

There are as many mechanisms as there are ways to share files. Please be more specific.

What types of operating system installation methods do you know?

Direcet Installtion through CD/DVD or Removable Drive

Remote Installation Services (RIS)

Unattended Installation

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