What happens in OS when a subprogram is called?(Related hardware registers)

vurukalasc

 Profile Answers by vurukalasc Questions by vurukalasc

• Apr 30th, 2009

When a sub program is called all the temporary results are stored in process status word (psw) and the return address is stored in the stack.

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What are the advantages and disadvantages of installing XP operating system and Vista operating system on to one computer?

simple_anagh

 Profile Answers by simple_anagh Questions by simple_anagh

• Aug 13th, 2009

Installing XP and Vista doesnt have any drawback. Having two OS system helps you to retrive data if one OS crashes then from another OS you can easily reterive the data.

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What is difference between dual core and core 2 duo processors?

rustosubhash

 Profile Answers by rustosubhash Questions by rustosubhash

• Jun 8th, 2009

These term are related to speed of processor in the machine ,The Dual core is four ?time faster than the pentium4 and the core 2 duo is two times faster than the dual core, it means core 2 duo is 8 time faster than a pentium4.Subhash patel

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What are the security features in Windows 2000 OS?

sakthi_kiruthika

 Profile Answers by sakthi_kiruthika Questions by sakthi_kiruthika

• Apr 16th, 2009

Windows 2000 OS contain so many features some of features are:1. Converting NTFS format2. Disabling TCP/IP and IIS3. Securing guest and administrator account4. Creating a local security policy5. Creating groups6. Disable sharing

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What is External Fragmentation?

Praveen Swamy

• Sep 2nd, 2015

External fragmentation happens when the memory allocator leaves sections of unused memory blocks between portions of allocated memory. For example, if several memory blocks are allocated in a continuo...

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How to configure Active Directory on 2008 Server?

mifthahudeen

• May 30th, 2012

Press windows key + r => typr "dcpromo"then it displays the AD configuration and installation wizard . select option like "create a new dc in a new forest" or "create a domain in an existing forest".....

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How to disable and protect private data from recovery?

saif.paktin

 Profile Answers by saif.paktin Questions by saif.paktin

• Aug 2nd, 2009

When you plan to delete your personal data from your computer and you do not like to some one recover it back then do this.1. Change the extension of file which you want to delete.Example the file you...

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What is IRQ?

ROHIT_4444

 Profile Answers by ROHIT_4444 Questions by ROHIT_4444

• Jun 26th, 2009

Stands for "Interrupt Request." PCs use interrupt requests to manage various hardware operations. Devices such as sound cards, modems, and keyboards can all send interrupt requests to the processor. F...

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Which is the scheduling used by UNIX?

anukriti

 Profile Answers by anukriti Questions by anukriti

• Jul 5th, 2009

FCFS schedulingSJFS (premptive and non premptive)Priority SchedulingRR scheduling!

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How to find the HBA Card model, type or make in Solaris 10?

Ragyapa

 Profile Answers by Ragyapa Questions by Ragyapa

• Aug 18th, 2010

# prtdiag -vThere  look for "IO Cards":========================= IO Cards =========================              &n...

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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?

erdhavalpatel

 Profile Answers by erdhavalpatel Questions by erdhavalpatel

• Jun 26th, 2010

The basic idea behind the VM is that the combined size of the program, data and stack may exceed the amount of physical memory avaliable for it.  The operating system keeps those parts of the program currently in use in main memory and rest on disk. Thanks.

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When do pagefault occur? Describe the actions taken by the OS when page fault occurs.

venu chowdary

 Profile Answers by venu chowdary Questions by venu chowdary

• Apr 6th, 2010

A page is a fixed-length block of memory that is used as a unit of transfer between physical memory and external storage like a disk, and a page fault is an interrupt (or exception) to the software ra...

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How to configure Hard Disk Space, file system and domain during XP installation?

sholanki

 Profile Answers by sholanki Questions by sholanki

• Feb 14th, 2010

Insert your XP installation CD inside the CD ROM. Reboot your system. Go through the instructions. Make a new clean install of windows. It will ask you for hard disk partition. There you can change the space of each drive and can also make new drives of your desired space.

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What is the difference between Multitasking and Timesharing System? What are their properties, merits and demerits?

RANJAN

• Dec 20th, 2011

Timesharing system: There is a given time for each process and on the basis of this time, multiple programs are executed.

Multi-tasking system: Multiple request come to processor and one after another task should be carried out. It may be take more time than the timesharing system.

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What do we mean by Optimal Page Replacement?

bhavna123

 Profile Answers by bhavna123 Questions by bhavna123

• Nov 2nd, 2010

Optimal Page Replacement refers to the removal of the page that will not be used in the future, for the longest period of time. It is the reverse of Least Recently Used.For Eg: You have the reference ...

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How to install OS from Server to all system?

Saleem

• Dec 11th, 2013

There are several ways we could install OS over the network, most dominated one is WDS and better than this is SSCM

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Lokesh M

 Profile Answers by Lokesh M Questions by Lokesh M

• Feb 10th, 2012

NIM Server stands for Network Installation Management server. It is used for maintenance as well as management of AIX images on LPARs and also on individual stand alone servers. NIM can group instance...

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How to relocate partition of swap in RHEL 7?

• Jul 31st, 2016

1. You have to remove swap space after that
2. Add the swap space on your relocated space.

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Explain the purpose of system calls and give 4 fairy explained examples.

Soumil

• May 4th, 2016

System calls allow user level processes to request services from the operating system kernel. These services include accessing the hard disk, read , write, execute, create a process. examples of sy...

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Given the four primary types of resources - CPU, memory, storage devices, and files - select for each one the most suitable technique for fighting deadlock and briefly explain why it is your choice

Sreevathsa S

• May 27th, 2017

A deadlock is a situation in which two computer programs sharing the same resource are effectively preventing each other from accessing the resource, resulting in both programs ceasing to function. Th...

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