-
What is the relation between process system time, process waiting time , and process CPU time?
thukral.rahul
- Jan 12th, 2010
Turn around time - It is the total time required by the process for execution.It includes the waiting time + execution time + othersWaiting time - Is the time a process spends in the ready queueCPU Time (or burst time) - It is the time a process requires the CPU to complete it's task or computation
karishma
- Feb 27th, 2006
Process system time (turn around time) = process cpu time + process waiting time
-
When a user clicks a particular file or an .exe file on a computer, what process does the system go through before the actual file is loaded onto the desktop?
thukral.rahul
- Jan 12th, 2010
When a user executes a file , the process is directly loaded into the memory . Genearly some OS has a Long term scheduler which moves the processes from the waiting queue to the ready queue(in memory)...
-
What is cache memory?
Cache memory is random access memory (RAM) that a computer microprocessor can access more quickly than it can access regular RAM. As the microprocessor processes data, it looks first in the cache memory and if it finds the data there (from a previous reading of data), it does not have to do the more time-consuming reading of data from larger memory.
thukral.rahul
- Jan 12th, 2010
A Cache is a fast memory (generally SRAMS) that is genearally installed between the main memory and disk to reduce the transfer rate and access time disparities.
-
What are the difference between FAT32 and NTFS?.
thukral.rahul
- Jan 12th, 2010
NTFS stands for new technology file system. It is an advancement over the FAT12, FAT16 and FAT32 versions of the file system used in windows earlier.In NTFS, theoritical it can store a file as large a...
viren_VRS73
- Aug 5th, 2008
NTFSOperting System - Windows 2000, Windows XP, Windows 2003 Server and Windows VistaMax Volume Size - 2TBMax Files on Volume - Nearly UnlimitedMax File Size - Limit Only by Volume SizeMax Clusters Nu...
-
Interrupt "trap" what is this trap?
thukral.rahul
- Jan 12th, 2010
A Trap is a Software generated interrupt. A Trap is set to have occured when some exceptions occurs like - a process accessing a memory address outside it's address space would result in a trap which ...
maaz_qureshi
- Oct 24th, 2008
A trap is a software-generated interrupt, An interrupt is a hardware-generated change-of-flow within the system. An interrupt handler is summoned to deal with the cause of the interrupt; control i...
-
-
What is a Real-Time System?
A real time process is a process that must respond to the events within a certain time period. A real time operating system is an operating system that can run real time processes successfully
adeshgupta123
- Jul 24th, 2009
RTS like embedded system work in real time, like robort work on RTS. Windows CE is RTOS.
-
Starvation
What is Starvation? How starvation is avoided in UNIX and WINDOWS Operating System?
raj_smart
- Jul 2nd, 2009
The solution to starvation is to include the process of "Aging". The idea is to change the priority of a process as a time goes by. This can be done by reducing the priority of higher priority processes or by raising the priority of starved processes.
karan_gtnit
- Feb 22nd, 2009
Starvation takes place when a low-priority process does not get CPU time bcoz of higher priority? processes keep coming.this can be removed by "AGING"In this A Process waiting for a particular time i...
-
Advantage of Variant of Linked Location
What are the advantage of the variant of linked location that uses a fat to chain to gether the blockes of the files?
-
What is the difference between outlook exp and ms outlook?
Guest
- Jan 4th, 2007
Outlook having .dbx file extention while in Microsoft office outlook have .pst
-
Domain Security Settings and Domain Controller Security Settings
What is difference between the domain security settings and domain controller security settings in windows server 2003 standard edition?
niyaz_mn
- Jan 20th, 2009
Domain security settings are applied to the all the SIDs (Users & Machines)?on that Domain.Domain Controller Security settings are applicable only to the Domain Controllers on that domain.Domain secu...
-
What's new in Windows 2008 server?
What is deference windows 2000 server and windows 2003 server?What is deference windows 2000 pro and windows xp pro?what is new in windows 2008 server?
-
Multi-Tasking Multi-Processing
What are the differences between multiprocessing and multitasking systems? Give Examples for both?
pratik_mandlecha
- Jan 5th, 2009
Task is nothing but one of the module of program. so multitasking is nothing but many task can be done simultaneously whereas in multiprocessing OS many CPR ie. processors are uses to complete one program means program is divided into small module each module handled by different processors.
-
Assembler, Loader, Linker
What is the logic of the conversion of a source code of a program into its object code? What has the loader and linker's function after that?
mrjhajee
- Nov 14th, 2008
Assembler is type of assembly language which?is used? in?CPU?scheduling?and has coding. Loader is a type of booting?which loads system file to the? Window?O.S i.e. boot loader. Linker?is?linked between compiler and system file.
-
What is CPU Scheduler?
->Selects from among the processes in memory that are ready to execute, and allocates the CPU to one of them.->CPU scheduling decisions may take place when a process:1.Switches from running to waiting state.2.Switches from running to ready state.3.Switches from waiting to ready.4.Terminates.->Scheduling under 1 and 4 is nonpreemptive.->All other scheduling is preemptive.
rakesh trichy
- Oct 12th, 2008
Disk schedulers in current operating systems are generally work-conserving, i.e., they schedule a request as soon as the previous request has finished. Such schedulers often require multiple outstandi...
-
What is Memory-Management Unit (MMU)?
->Hardware device that maps virtual to physical address.In MMU scheme, the value in the relocation register is added to every address generated by a user process at the time it is sent to memory.->The user program deals with logical addresses; it never sees the real physical addresses.
rakesh trichy
- Oct 12th, 2008
A memory management unit (MMU), sometimes called paged memory management unit (PMMU), is a computer hardware component responsible for handling accesses to memory requested by the central processing u...
-
Difference between Primary storage and secondary storage?
Main memory: – only large storage media that the CPU can access directly.Secondary storage: – extension of main memory that provides large nonvolatile storage capacity.
rakesh trichy
- Oct 12th, 2008
Primary is were the operating system and other files are stored which is usually the hard drive. Secondary is a second hard drive or a CD/DVD ROM or 3 1/4 inch floppy drive or any other type of devic...
-
Common Functions of Interrupts?
->Interrupt transfers control to the interrupt service routine generally, through the interrupt vector, which contains the addresses of all the service routines.->Interrupt architecture must save the address of the interrupted instruction.->Incoming interrupts are disabled while another interrupt is being processed to prevent a lost interrupt.->A...
rakesh trichy
- Oct 12th, 2008
8051:InterruptNumber Description Address0 EXTERNAL INT 0 0003h1 TIMER/COUNTER 0 000Bh2 EXTERNAL INT 1 0013h3 TIMER/COUNTER 1 001Bh4 SERIAL PORT 0023heg program..unsigned int interruptcnt;unsigned cha...
-
What is the mail process from source to destination ?
rakesh trichy
- Oct 11th, 2008
Destination data indicating destinations to which messages are to be transmitted are prestored in thestorage device so that an operator need not input destination data fortransmission of every message...
-
Briefly explain about the differences between the concepts that are involved in Windows and UNIX operating system?
rakesh trichy
- Oct 11th, 2008
Unix is more flexible and can be installed on many different types of machines, including main-frame computers, supercomputers and micro-computers.- Unix is more stable and does not go down as often ...
Windows Interview Questions
Ans