OS Interview Questions

NTFS 1)allows access local to w2k,w2k3,XP,win NT4 with SP4 & later may get access for somefile. 2)Maximum size of partition is 2 Terabytes & more. 3)Maximum File size is upto 16TB. 4)File & folder Enc...

New Technology File System

Operating System;
System which controls the operations of the hardware. Serves as an intermediary between the application layer and the hardware it interfaces with.

1)data Management. (file ,folder,drive,also contain data.)
2)communicator b/w software and hardware.
3)provide user Interface.
4)provide working environment.

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.

Layered structure of an operating system: LAYERS ===== User User Interface Program / Application Program System Services and File System Input and Output Management User Console Memory Management Pro...

Resource Parameters are classified under 2 categories: Main Parameters Additional Parameters Main parameters are the most important parameters pertaining to functionality, performance, and availabil...

Prior to the introduction of Operating System, operation instructions were generally fed into the electronic system bit by bit on rows of mechanical switches or by jumper wires on plug boards.

Batch Processing:In batch processing Operating systems the tasks are performed in batches,os waits for a batch of tasks to arrive and performs the operation on the batch. Time Sharing: in time sharin...

batch processing when all the job in a batch is processed by the os on the basis of priority of job without user intervention is called batch processingIn time sharing systems the cpu time is shared b...

Wrong Ans ........bro ............. virtual memory is a feature of operating system that enables a process a memory(RAM) address space that is independent of other processes running, and USE THE SPACE THAT IS LARGER THEN THE ACTUAL AMOUNT OF RAM IS PRESENT.

Physical memory is the actual real memory used in RAM. Virtual memory as the name suggests is not real. The OS uses virtual memory as a memory management technique in which non-contiguous memory is pr...

Answer 1: use for contiguous memory allocation.

Answre is 1. For contiguous memory allocations

1: process is a program at execution time.
2: a part of program i.e some set of instructions which are in main memory i.e. thread is process.
3: thread is the smallest unit of process.

A Program is a passive unit of a job in computing language. It is a set of instruction to perform a task. It is stored on secondary memory and does not have any other resource.While a Process is an a...

Multitasking can be achieved by Time sharing operating system. In time sharing O/S CPU time is divided into fixed small time slices and each task given this fixed duration of time. It uses the Round Robin scheduling algorithm.
thanks!!!!!!!!!

Time Sharing: programs are executed in an interlived manner that is 1st the programs are merged together to form a single stream of instruction then given to the processos for execution.Multitasking: ...

Pre above explanation, only computer has "Hibernation Mode", whether the LAN HUB also include the function or not?

hibernation mode in windows refers to the mode in which we can just conserve power without closing applications.when we shut down,all the applications closes first and then the system gets off. but in...

The main difference between GPOS and RTOS is that the RTOS should be deterministic. That is, the time consumed by the operating system to execute it's service is fixed where as in GPOS it's variable...

The main difference between GPOS and RTOS is that the RTOS should be deterministic. That is, the time consumed by the operating system to execute it's service is fixed where as in GPOS it's variab...

semaphore is a abstract datatype and monitor is a  programming construct...although both performs the function of mutual inclusion using monitor is sometimes safer than using semaphores because &...

Semaphores are variables used for the synchronization.

Linux - File System format supported

EXT2 - Extended 2

EXT3 - Extended 2 + Journal

JFS - Journal file system

Resier - Advanced Journal

LVM - Logical Volume manager

VFAT - FAT 16 / 32

EXT 4 [WHICH IS LATEST IN RHEL6.0]

There are lot of file system types are used in Linux. Mostly Linux uses ext3 file ystem.You can know by using the command given below.

fdisk /dev/dsa
fdisk /dev/hda

Once you executed the above one just type "l" and it will show all fil system types in linux.

  Dear frnd,Win981. Win98 Support FAT file system & XP support NTFS And Also FAT. 2. Win98 Does not Having Remote Access facility While in XP there is.3. win98 Does not need faster proce...

1. Win98 Support FAT file system & XP support NTFS And Also FAT. 2. Win98 Does not Having Remote Access facility While in XP there is. 3. win98 Does not need faster processing speed while XP Need ...

UNIX:- free- open - multiuser and multitasking- file system in hierachical model (each file is a chil of another one)- no viruses ( because of the shell)- more stable- when it starts, it only runs nee...

UNIX is more secured Operating System.

Disadvantage:
 Not easy to interact with the system.
 Resource allocation is difficult.
No back up is available

Advantage
 Direct HARDWARE ACCESS.

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...

I think it is mentioned that 'x' is initialized to 0.I would solve it this way: Unrolling the loops, we get the following instructions to be executed in each of the following cases:C...

Part A : Since in case1 X is not initialized. Therefore the resulting values in case 1 will be some garbage values stored in X earlier.Whereas in case2 X has been initialized therefore the possib...