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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...
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Page File and Virtual Memory
Describe the relationship between a page file, and virtual memory on a Windows operating systems.
kumar1974
- Apr 17th, 2008
Virtual memory is the memory taken form hard disk.Swap: When the programme excuting in the main memory is completly shifted to Virtual Memory for the execution. Then it is called the Swaping.Paging: W...
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Why unix is more stable than windows?
rakesh trichy
- Oct 10th, 2008
Kernel Stability: "Both the UNIX kernel, and the design techniques it encourages, are renowned for stability. A system of several thousand servers must run reliably and without intervention to restart failed systems
rakesh trichy
- Oct 10th, 2008
Unix is more stable and does not go down as often as Windows does, therefore requires less administration and maintenance. Unix has greater built-in security and permissions features than Windows. it ...
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What is the meaning of Register and Main memory(RAM) ?
And give the difference between them
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Active Directory User Accounts
can we create Multiple User Accounts in Active Directory in a single shot? if So what is the command or tool used?
dashokkumar
- Oct 25th, 2013
You can create Bulk User Accounts in Active Directory using cmdlets, however these are not scalable to the entire organization provided all your technicians have expert scripting knowledge. Alternativ...
Sanjay Mishra
- Oct 25th, 2013
You can create multiple user account by using dsadd command.
Create batch file put all user name and require field and execute it. -
What is virtual memory?
A virtual memory is hardware technique where the system appears to have more memory that it actually does. This is done by time-sharing, the physical memory and storage parts of the memory one disk when they are not actively being used.
mohd_ismail21
- Mar 16th, 2010
Virtual memory is a non physical (intangible) memory created by the CPU to temporarily store the data for displaying purpose. Example: the website page you are seeing is not stored in physical memory it is stored in virtual memory and when you close the website page the memory is lost. RegardsIsmail
goksn
- Sep 6th, 2009
Virtual memory is a memory management technique used for handling programs/data files larger than the physical memory of the system.Op.system loads as much data as possible into its main memory (RAM)....
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Describe different job scheduling in operating systems?
Scheduling is the activity of the deciding when process will receive the resources they request.FCFS: --- FCSFS stands for First Come First Served. In FCFS the job that has been waiting the longest is served next.Round Robin Scheduling: ---Round Robin scheduling is a scheduling method where each process gets a small quantity of time to run and then it is preempted and the next process gets to run....
priya adak
- Sep 20th, 2011
job scheduling also called as long term scheduling....It select the process from these pool and load them into memory for execution..It controls the degree of multiprogramming....If the degree of mult...
thukral.rahul
- Jan 12th, 2010
Windows uses priority based pre-emptive CPU / Job scheduling algorithm.
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What are the major differences between windows XP and Windows 2000 operating systems?
gyanvendrarajput
- Aug 11th, 2008
Windows XP supports NTFS and FAT files but windows 2000 supports only FAT files.WinXP provides file lever security whereas Win 2000 does not.
saurabh
- Apr 3rd, 2006
Which one is better
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If a system has 128 MB RAM and 1 GB hard Disk, and a process decides to use its fully allotted Virtual Memory 2^32 - 2GB = 2 GB, how is it practically possible?. But this works in all machines. How?
00elton00
- Aug 5th, 2007
The above is possible due to the Paging. Both the Virtual Memory and the Physical Memory are broken down into pages of equal size, and a mapping, called the page table, is used to map virtual memory pages to physical memory pages.
Guest
- Jun 24th, 2006
Min virtual Memory size is 1.5 times of RAM (Exact RAM size + 11MB)Max Virtual Memory size is 3 times of RAM
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What is Throughput, Turnaround time, waiting time and Response time?
Throughput – number of processes that complete their execution per time unitTurnaround time – amount of time to execute a particular processWaiting time – amount of time a process has been waiting in the ready queueResponse time – amount of time it takes from when a request was submitted until the first response is produced, not output (for time-sharing environment)
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Explain briefly about, processor, assembler, compiler, loader, linker and the functions executed by them?
Processor:--A processor is the part a computer system that executes instructions .It is also called a CPU Assembler: -- An assembler is a program that takes basic computer instructions and converts them into a pattern of bits that the computer's processor can use to perform its basic operations. Some people call these instructions assembler language and others use the term assembly language. Compiler:...
aman singh
- Jun 11th, 2012
Assembler is a programming language which converts assembly language into machine language..and compiler is a language which convert high level language to machine language at once..whereas interpreter does that line by line
ashishgarg
- Aug 19th, 2008
Processor is the one which executes the instructions.Compiler takes the source code and generates the assembly language code.Assembler takes the assembly language code and generates an object file.Lin...
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Difference between Logical and Physical Address Space?
->The concept of a logical address space that is bound to a separate physical address space is central to proper memory management.Logical address – generated by the CPU; also referred to as virtual address.Physical address – address seen by the memory unit.->Logical and physical addresses are the same in compile-time and load-time address-binding schemes; logical (virtual) and physical addresses...
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Q which of the following scheduling policy is well suited for a time-shared operating system ? 1 shortest job first 2 round robin 3 first come=first served 4 elevator
thukral.rahul
- Jan 12th, 2010
In a time sharing system, the main concern is to reduce the response time so that the user is given an abstraction that whole of the processor is dedicated to the user process even though multiple pro...
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The process of transforming one bit pattern into another by bit-wise operations is called 1. masking 2. pruning 3. biting 4. chopping
R Abarna
- Dec 16th, 2018
Masking
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What is the difference between blocking and waiting state of process ?
dishaV
- Feb 16th, 2008
A process is said to be in waiting state when it is queuing in the main memory for its turn to be executed. Whereas, the process enters a blocked state in case of any interrupt or due to unavailabilit...
vipul_se
- Jan 28th, 2008
A blocking state is the state in which the process is waiting for some operation to get completed.It can be an I/O operaion,or some Inter-Process-communication. The process can not execute furthur wit...
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What are the latest versions of MSDOS?
What are the latest versions of dos?how does it help in booting the system?what are commands used?
rakesh trichy
- Oct 11th, 2008
MS-DOS 7.0 is the latest version of MS-DOS. Windows 95 included MS-DOS 7.0;this was not a stand alone version of MS-DOS and cannot be purchased by itself. ms-dos Version 7.0 of the Bernoulli driver is...
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32 bit and 64 bit
What is the difference between 32 bit and 64 bit system?
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What is difference between Win XP and Win 7
I want to know what is main difference between win xp and win 7. and how to compare in win xp and win 7.
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What to do when outlook fails to send outgoing email?
What to do when outlook fails to send outgoing email?
ANSWER IS NOT,
- Ping and check connectivity,
- Check password
- checking port connectivity
other than this, kindly let me know, other possibilities there which fails to send email(via outlook)
Windows Interview Questions
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