Windows Interview Questions
What is the meaning of register and main memory(ram) ?
And give the difference between them
Differentiate between complier and interpreter?
An interpreter reads one instruction at a time and carries out the actions implied by that instruction. it does not perform any translation. but a compiler translates the entire instructions.
The compiler converts a high level language instruction into into machine language where as an interpreter converts the high level instruction into some intermediate form and after that, the instructi...
While running dos on a pc, which command would be used to duplicate the entire diskette?
Diskcopy Java thread states
Diskcopy command is used to duplicate the diskette,while running DOS on PC.
Paging is solution to external fragmentation problem which is to permit the logical address space of a process to be noncontiguous, thus allowing a process to be allocating physical memory wherever the latter is available.
Paging is a process of dividing the memory into equal sized logical blocks.When any page is required the operating system searches for that page in the secondary memory and copies that page to the mai...
Switching the cpu to another process requires saving the state of the old process and loading the saved state for the new process. This task is known as a context switch.Context-switch time is pure overhead, because the system does no useful work while switching. Its speed varies from machine to machine,...
Context switching is a process of storing and restoring the state of the CPU So that the execution of the process can be resumed from the same point where it had been switched. There are 3 situations ...
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...
Throughput: Number of processes completed per unit time. Turnaround time: The interval from time of submission of the process to the time of completion of the process. Waiting time: The sum of the pe...
Throughput:Total amount of work done in a unit of time.Waiting Time:The amount of time that is taken by a process in ready queue.Turn Around Time:The sum total of waiting time & execution time is ...
What is heartbeat in clustering?
Heartbeat cluster is a program that runs specialized scripts automatically whenever a system is initialized or rebooted.This cluster allows clients to know about the presence (or disappearance!) of pe...
It is a Bootstrap Protocol that relays DHCP(Dynamic Host Configuration Protocol) messages between clients and servers for DHCP on different IP Network.using DHCP in a single segment network is easy. I...
How will you troubleshoot user login problem?
check whether Caps lock is on ,user is in AD or not...
What is the port no used by kerberos protocol?
88
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?
What are the difference between win 2003 and win 2008 os?
Difference between 2003 server and 2008 server 1.we can install windows 2008 server either in full version(install all services& applications) or server core(only install minimal required services), ...
Primary difference is visualization management and power management tools.
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...
logical address is the address generated by the CPU But physical add is the actual add of any process.
cpu basically generates logically address but physical address is the actual address of the process in the memory.
What is the important aspect of a real-time system or mission critical systems?
A real time operating system has well defined fixed time constraints. Process must be done within the defined constraints or the system will fail. An example is the operating system for a flight control computer or an advanced jet airplane. Often used as a control device in a dedicated application such...
Guest What is the important aspect of a real-time system or Mission Critical Systems? A real time operating system has well defined fixed time constraints. Process must be done within the defined con...
What are root hints?
root hints are DNS data store table used in basic terms to locate authoritative dns servers.
Which tool is used to check for application and os errors in a server?
Within a windows system event logs capture system, applications, a security events by default. Dependent upon error or events captured there is a plethora of tools which can be used to diagnose and gain in-depth analysis. once such common set of tools are sysinternals suite.
What is the difference between synchronization and mutual exclusion?
As I understand it, and I'm just revising it, Conditional synchronisation is the mechanism that allows one to achieve mutual exclusion in a program.
Regards
Jared
Mutual Exclusion:1. Lock and unlock operations are always performed by the same thread. 2. Thread blocked on semaphore cannot be awakened by a signal. Synchronization: 1. Lock and unlock operations...
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...
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...
Windows uses priority based pre-emptive CPU / Job scheduling algorithm.
What are the basic functions of an operating system?
Operating system controls and coordinates the use of the hardware among the various applications programs for various uses. Operating system acts as resource allocator and manager. Since there are many possibly conflicting requests for resources the operating system must decide which requests are allocated...
-Interface between User Copmuter and Copmuter Harware.
-create the environment to user can execute the process.
-intermediate between application and hardware.
-control the execution of application program.
Basically operating system is a system sofware and a set of instructions which creates a plateform for the user to interact with the computer hardware. It works as an intermediary between the computer...
What is the difference between process and thread?
A process is a collection of one or more threads thread is a subset of a process multitasking of two or more process is known as process based multitasking multitasking of two or more threads is kn...
Process is program that is in execution, but threads are the division of process in multiple task simultaneously.
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Registers are present in the CPU and are directly associated with ALU.So,overhead involved in accessing information from the registers is the lowest
registers are used for storing the values.
eg ADD R1,R2
where R1,R2 are registers for performing the operation addition.
and main memory is also used for storing and registers are stored in main mem.