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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 functions of Windows Vista home?

Family Safety Settings Search and Organization Windows Mail Windows Internet Explorer 7 Windows Calendar Windows Sidebar and Gadgets Windows Photo Gallery Performance Windows Media Player Windows Backup Windows Movie Maker Networking Windows Media Center in Windows Vista Windows SideShow Gaming Speech Recognition User Experience Help and Feedback Windows Security Windows Update

What is an assembler in operating system?

an assembler is aroutine program that translates assemly language source code to a machine language object code

Which operating system does NOT have a graphical user interface?

It in UNIX the GUI is separate from the operating system itself. You can uninstall the GUI and still have a completely working UNIX system.

What is indefinite postponement in operating system?

Process waiting for an event that is not available or may be available in some time....

What are the advantages and disadvantages of Single-user operating systems?

Advantages to single-user, single-tasking operating systems are, the computer is dedicated to one particular task at a time. No other aspect of the computer is shared in that moment. Disadvantages are tasks may take much longer to complete.

What is the purpose command Interpreter and why it is usually separate from the kernel?

It reads commands from the user or from a file of commands

and executes them, usually by turning them into one or more system

calls. It is usually not part of the kernel since the command interpreter is

subject to changes.

What operating system uses the least amount of RAM?

It Depends, Different versions of operating systems uses different amounts of ram,example if you got a Windows computer and it was windows 98 it would use 2mb of ram but if you got a windows xp it would use 128mb of ram to run.

if you were to say out of all well known operating systems and versions hear is a small list:
Order small amount of ram required to largest
Windows 98
Windows 2000
Windows XP
Linux (Ubuntu)
Windows Vista

this is only a basic list so it doesn't have any mac Os's and it doesn't contain all Os's
From David.m

What are two features of the Lojack system?

LoJack is a variety of theft recovery systems for vehicles, laptops, cargo shipments, and heavy equipment. Two features of the vehicle recovery system are the ability to remotely activate the transmitter and a signal is broadcast that police tracking units pick up to locate the vehicle.

Make a os in notepad?

Go to accessories, and open up notepad. Then type in (ur name) Operating System. press enter

type in loginpress enter

type in passwordpress enter

type in pause>null

press enter

save as a .bat file

open in cmd and voila!

^^ This however is not a full stand-alone OS as it runs with the windows command shell.

If you want to make a real operating system, I suggest you look into finding out about the "Kernel" and what it does.

How will studying assembly language enhance your understanding of operating systems?

Assembly language is a good tool for learning how applications programs communicate with the computer's operating system via interrupt handlers, system calls, and common memory areas. Assembly language programming also helps when learning how the operating system loads and executes application programs.

Is the system software a spreadsheet program or operating system or word processing program or presentation graphics program?

System software means that provides an environment to run application programs.The best example of system software is operating system have a direct access to computer hardware and can operate and manage hardware.They can directly access memory locations and can perform i/o.

They don't perform any specific task like application software but provides suitable environment to execute other programs.

Example of system software:

1. Microsoft Windows xp

2. LINUX

Examples of application software:

1.Web browsers

2.Presentation graphics software

3.Word processors

What is Peterson's solution in operating system?

Peterson's solution:- (AKA Peterson's solution) is a concurrent programming algorithm for mutual exclusion that allows two processes to share a single-use resource without conflict, using only shared memory for communication. It was formulated by Gary L. Peterson in 1981.While Peterson's original formulation worked with only two processes, the algorithm can be generalized for more than two.

Mutual exclusionP0 and P1 can never be in the critical section at the same time: If P0 is in its critical section, then either flag is false (meaning P1 has left its critical section) or turn is 0 (meaning P1 is just now trying to enter the critical section, but graciously waiting). In both cases, P1 cannot be in critical section when P0 is in critical section.

What other kinds of waiting are there in an operating system?

Some other kinds of waiting in an operating system include waiting on applications, waiting on the user, and waiting for hardware to communicate. The operating system facilities many different components to work in sync.

What are the three major activities of an operating system with regard to memory management?

1- keeping track of which parts of memory are currently being used and by whom.

2- decide which process is to be loaded in memory when the space is available.


3- allocate and deallocate memory space as needed.

Consider a logical address space of eight pages of 1024words each mapped onto a physical memory of 32 frames how many bits are there in the logical address?

As was given for a 4 Page, 1024 words & 64 frames (shown below)

4 pages -> 2^2 bits

1024 bytes -> 2^10 bits

64 frames -> 2^6 bits

Therefore:

Logical memory = 2+10=12 bits

Physical memory = 10 +6 =16 bits

The answer for this problem is 13.

8 pages -> 2^3 bits

1024 bytes -> 2^10 bits

32 frames -> 2^5 bits

Therefore:

Logical memory = 3+10=13 bits (Page + Word)

Physical memory = 10 + 5 =15 bits (Word + Frame)

What are the steps performed by an operating system to create a new process?

1. Assign a unique process identifier to the new process.

2. Allocate space for the process.

3. Initialize the process control block.

4. Set the appropriate linkages.

5. Create or expand other data structures.

What are the advantages of an operating system?

Answer

It allows you to use your computer without any knowledge of coding. Without an operating system, your hardware would not work at all, until you wrote your own code for the hardware to do what you want.


What is the difference between a network operating system and a desktop operating system?

Desktop OS is like windows XP professional or home edition, or Mac OS X. Network I believe is either one based on being in a network, like a cloud computing OS; or a server operating system, which tells the computer how to host websites and files in a network, including the internet.

Main difficulties in writing an operating systems for a real time environment?

The main difficulty is keeping the operating system within the fixed time constraints of a real-time system. If the system does not complete a task in a certain time frame, it may cause a breakdown of the entire system it is running. Therefore when writing an operating system for a real-time system, the writer must be sure that his scheduling schemes don't allow response time to exceed the time constraint.