Operating Systems

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.

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

BIOS

Direcet Installtion through CD/DVD or Removable Drive

Remote Installation Services (RIS)

Unattended Installation

Image Deployment

Yes. All software fails. The big things are: how often does it fail, under what conditions does it fail and is this an acceptable rate of error. Eg: the software for the space shuttle should be perfect, but nothing is, so Nasa shoots for 99.999% uptime. That's 3 days down for every 10,000 days; most people certainly would be willing to bet their life on that software; especially if you compare that to the chances of being in a car wreck any day of the year.

Like a spool or a "print spooler", this suggests that spooling orders tasks in a linear fashion to be quickly executed in a sequential manner rather than multitasking several at once.

Antialiasing is a technique where hard edges of lines which appear as jagged are smoothed out using samples of colour from the surrounding area to the line. The greater the sample size the more 'fuzzed' the line becomes.

It relies on two parameters the first being the sample size, the second being the overall resolution of the image.

Therefore increase the screen resolution. If this doesnt satisfy you then you are at the limits of what the effect can provide.

An interrupt is an event that alters the sequence in which the processor execute instructions.

It is generated by hardware of computer system.

Classes of interrupt:-

IBM processor has six types of interrupts.

* svc interrupt(supervisor call)

*input/output interrupts

*external interrupts

*Restart interrupts

*Program check interrupt

*Machine check interrupts

Buffering is temporary storage while a computer completes current tasks. Two typical places where buffering occurs are:-

(1) Downloading from the internet... the connection may be able to deliver data faster than the computer can process it.

(2) Printing... since printers work relatively slowly in relation to the computer, the computer can create a 'queue' of documents waiting to be printed.

1:-increased through put

2:- lower response time

Ask for it for your birthday or Christmas.

Myarc Disk Operating System was created in 1987.

The loading of modules dynamically in monolithic kernel is done at the binary level as opposed to the architectural level. Dynamically loading modules is a more flexible way of handling the operating system image at runtime - as opposed to rebooting with a different operating system image.

That's the "base" operating system. Let's say you have Windows 7, and you need Windows XP for compatibility (for instance, lots of older games no longer work with Windows 7). So you install a virtual machine using a special program such as as VMWare, and you run Windows XP in a window within Windows 7. (It can be full-screen as well.) Or perhaps you want to try out Linux. In this example, the base machine - the real, physical machine - has Windows 7; that's the host operating system, while the virtual machine has Windows XP (or Linux).Note: It is also possible, for example, for the host operating system to be Windows 7, and the virtual machine also Windows 7 - this can help you isolate different installations, and - for example - if you no longer need it, erase the entire virtual machine, which is faster, and often much cleaner, than uninstalling.

One would need to use a filesystem in order to keep check of the files in a computer, manage them and be able to know and find them wherever them might be. It is also there to update files. In other words, people use filesystems to keep check of their files.

The best OS for development is the one the developer feels most productive in. Generally speaking, it should be the same as the target for deployment, or be set up with a VM or access to another system that mimics the environment where the web application is to be deployed. There are some exceptions. For example, if the application is to be developed using Microsoft-proprietary technologies, you may have few options for development except on the Microsoft platform. If you, however, use more standard and universal technologies, the operating system is largely irrelevant save for the developer's own preference and productivity.

A networking operating system (NOS), also referred to as the Dialoguer,[1] is the software that runs on a server and enables the server to manage data, users, groups, security, applications, and other networking functions.[2] The network operating system is designed to allow shared file and printer access among multiple computers in a network, typically a local area network (LAN), a private network or to other networks. The most popular network operating systems are Microsoft Windows Server 2003, Microsoft Windows Server 2008, UNIX, Linux, Mac OS X, Novell NetWare, and BSD.

Open source means that the source code is available free of charge. That does not mean however that you have any other rights in connection to it.

GNU GPL insures that a software is "Free" (as in Freedom), making sure that users not only have the right to see the source code, but modify it in any way they like it as long as they license the modifications under the GPL, too. See the link to Free Software vs. Open Source for more details.

A Guest operating system is one that runs on top of another, similar to a program. Guest operating systems are usually run in a "virtual machine", which does not interact directly with the real hardware of the computer.

MMU-memory management unit

The BIOS (Basic Input/Output System) hold the information about where things are located in the computer (i.e.; input ( keyboard or a mouse), memory, display, sound, and storage). The operating system uses this information to receive and transmit data or store it appropriately. Neither nor the other has "control" they work together. This is intended to be a simplified explanation only. For more specific information, please send a more detailed inquiry.

An operating system manage the word processor.It provides a basis for word processor

These terms are typically only applied in cases where a virtual machine is in use (a computer program that emulates a physical computer), popular examples include VMware, VirtualBox and user-mode Linux. In this case the "host" operating system is running on the physical computer and the "guest" operating system is running in the emulation software.

For example I have a workstation running Debian Linux as a host operating system. When I want to compile a program for several versions of windows I can launch several instances of VirtualBox to bring up virtual machines running Windows XP, Vista and Windows 7 in both 32 and 64 bit versions as guest operating systems. This lets me easily compile the program with optimizations for each of these operating systems using a single workstation and without rebooting.

Virtual machines are also common in web hosting. There are a number of hosting service providers who's business model consists entirely of selling access to user-mode Linux virtual machines. In this case the Linux guest operating system is actually running in a virtual machine under a Linux host operating system, the benefit of using virtual machines is that each customer may be given complete control over their virtual server, while the hosting company can run hundreds or even thousands of virtual servers from a handful of physical computer systems.