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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 are the disadvantages of interconnected power system?
Economic interchange: production cost of area 1 is lower so sells to area 2.
Emergency Interchanges: Each areas helps other in case of an emergency
Why is the operating system the most important software on the computer?
There are many aspects of the operating system which are vital to the smooth running of your computer system, with a number listed below :-
Speed
Many people are forever demanding quicker and quicker computer systems, and while they may have the best chips in the world, ultimately it is the operating system which will dictate processing speeds and the overall performance of your computer.
Security
In basic terms the operating system is the interface between your computer and supporting hardware and software. The Kernel of any operating system is the most vital area and is the one which is afforded the most protection. Microsoft was in trouble at the launch of Windows XP because they would not allow security software companies access to this area - concerned about possible consequences.
Control
While many of us just take for granted that we can have multiple programs and multiple services running at the same time, this can often require complicated stacking and queuing systems. This is an area of your operating systems which is hardly mentioned, but one which allows you to affectively multi-task.
The fight between the likes of Linux based and Windows based operating systems has started to hot up over the last couple of years and has pushed the operating system sector to the fore. More and more people are now curious as to what the operating system controls and what it does. This in turn has seen many look into what Linux offers over Windows and other operating systems.
How many computers are sold with a Windows Operating System in the US?
Well, microsoft's windows operating system is on about 90% of the computers currently in use, so I would assume a number close to that would be the % of the computers coming preloaded with windows.
There is nothing in the CPU hardware itself. This is handled by "anti-virus" software.
How command is used to terminate a process?
right click on the task bar, click task manager, click the process tab, right click the process you want to end, click end process.
pretty strait-forward.
if explorer has crashed, press Ctrl + Alt + Delete. you can access task manager from there.
What portion of operating system interacts directly with computer hardware?
HAL.dll in windows
The Hardware Abstraction Layer Directs to The kernel I believe it's been a while since my last A+ exam
What are the factors to consider when choosing a operating system?
Some people would probably say "Start them on Windows" because of the "user friendly" myth. This is largely because virtually everyone buys a computer and just uses what's on it (Almost always Windows.). So when they see someone use, say, Linux, they start thinking the person is a hardcore power user.
The reality here is that "user friendly" is a myth. What might be "intuitive" to someone who started out on Windows would be utterly backwards and unpleasant to a Mac OS X user.
There are people who, while entirely new to Linux, jumped straight into Archlinux, not at all percieved to be anything at all like Windows. They did fine largely because they were capable of following directions and learning.
Anyway. "Politically correct" answer would be "Windows." But the real answer would be "what is 'intuitive' for you, but still easy to teach." Nobody was born with the knowledge to use Windows, OS X, or Linux. It's all down to where the person starts.
I, for example, actually started on DOS when I was 3. If I could use DOS at 3, most people new to computing could handle Ubuntu or Linux Mint at the very least if that's what you're more familiar with.
Long answer short: There's no universal "new person" OS, even an OS marketted as "user friendly" and "intuitive."
Released in 1990, Windows 3.0 with Microsoft's first operating system to achieve wide commercial success. This was followed by Windows 3.1 two years later
What is red hat operating system?
Red hat operating system is a Linux based operating system assembled by the company Red Hat.It was released on November 3,1994.
It was the first Linux distribution to use the RPM package manager.
since 2003 Red Hat has discontinued it in the favor of Red Hat Enterprise Linux (RHEL) for enterprise environment.Now fedora project is supported by the community and Red Hat.
Red Hat Linux 9, the final release, hit its official end-of-life on 2004-04-30, although updates were published for it through 2006 by the fedora project till it's shutdown in 2007.
It is an indicator that something could be wrong and a check to discover what has caused it needs to be done. There may be nothing to worry about and the change may even be a positive one, but it is important to find out what has caused it. It could help prevent a bigger problem or be useful in improving the efficiency of the equipment.
What are the recent memory management schemes?
Single-user contiguous
Fixed Partitions
Dynamic Partitions
Relocatable Dynamic Partitions
Paged Memory Allocation
Demand Paging
Working Set
Segmented Memory Allocation
Segmented/Demand Page Memory Allocation
-------Taken from "Understanding Operating Systems. 6th edition pg 99
Interrupts in operating systems?
Interrupts in operating systems:
1. Events signaled by the hardware, which require handling.
2. Bogus terminus for system-calls on Intel platform.
a realtime system is one that must react to inputs with outputs in real time. at the simplest this means the system must meet deadlines. there are 2 types of realtime systems:
- soft realtime systems only have to meet deadlines on the average, its OK to occasionally miss a deadline the system will still keep functioning. such systems typically only interact with people. if the system misses too many deadlines the people get irritated with its slowness, but the task still gets done.
- hard realtime systems must meet all deadlines, missing a single one means the system has failedto perform the function it was designed for. such systems are typically used to control other equipment; some examples of realtime systems are: industrial process controllers, aircraft flight control systems, missile guidance systems, spaceprobe guidance and control systems, experiment data collection controllers, etc. in each of these cases missing even one deadline could result in a catastrophic failure (with possible loss of life) or permanent loss of data from an experiment costing many millions of dollars to setup.
KERNEL
In computing, the kernel is the central component of most computer operating systems; it is a bridge between applications and the actual data processing done at the hardware level. The kernel's responsibilities include managing the system's resources (the communication between hardware and software components).
Interrupts are not sufficient in multiprocessor systems since disabling inter rupts only
prevents other processes from executing on the processor in which inter rupts were disabled; there are
no limitations on what processes could be executing on other processors and therefore the process
disabling interrupts cannot guarantee mutually exclusive access to program state.
Preventative maintenance procedures include:
- Run the disk defragmenter once a month.
- Delete old data that you no longer need and back up your data.
- Perform full system virus scans with an updated anti virus program at least once a week.
- Run a firewall and scan your computer with malware and anti-spyware programs regularly.
- Open the case and get rid of dust every few months.
What is the best operating system for an IMac?
There is only one operating system specifically for the Mac that being Mac OS X. The current version of Mac OS X is 10.7 which is also known as Lion. Macs can run other operating systems such as Windows or Linux if required.
What is Windows operating system and why it is called Windows?
An operating system (OS) is software, consisting of programs and data, that runs on computers, manages computer hardware resources, & provides common services for execution of various application software. For hardware functions such as input & output and memory allocation, the operating system acts as an intermediary between application programs & the computer hardware. Operating systems are found on almost any device that contains a computer from cellular phones and video game consoles to supercomputers and web servers. Examples of popular modern operating systems for personal computers are: Mac OS X, Microsoft Windows & Linux.
What are the 2 general roles of an Operating System?
The first general role of an operating system is to provide an ABSTRACTION layer for software to run on a machine without needing to know hardware-specific implementation details. It is important in order to reduce the burden on application
What is a real-time operating system?
- manage the microprocessor and other system resources to meet the requirements of the application
- be able to respond to, and synchronize with, events
- be able to move data efficiently between processes
- be able to manage the demands of the process with respect to time (or other independent variable)
- perform in a predictable manner with operations that take place within a predictable about of time
Functions of a network operating system?
instructs the computer about the presence of a network interface card installed in the computer and its address, and controls the flow of data and command traffic to and from the computer. This ability allows the computer to share peripherals
Why authentication in important for file protection?
Operating system data file protection through authentication is very important. A file can be any important document which may contain data or information that may be very valuable for the company or the owner of the file. If proper authentication is not carried out then the company can incur loss of data, expose to viruses and trojan attacks and can face a lot of issues. Authentication also increases the value of the information saved in the files because it does not appear fake. By giving the authentication to the people, you can ensure that no unauthorized person will access the file or imitate it. Just take the example of art work of a person saved in a file. Therefore, identification of the person is very necessary before sharing any file with any other person.
