Operating Systems Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Windows (3805)
Linux (2255)
Unix (1304)
Solaris (894)

RTOS (43)
Bulnex (4)
Operating Systems General Concepts (1242)
Data Structures (2039)

Operating Systems Interview Questions

Questions Answers Views Company eMail

Write Hirarchy of ADS...?

2 7821

The statement “Every multiprogramming system is not a time sharing system” is correct or not. Justify your answer with the help of logic and example.

InterSoft,

1 8003

Hi All, Q. I have one log file that log file contains application message but the application message in log file not append any date value. so after 1 to 2 date that file is big size , I want to delete contents only that was appended before 4 days ago from that single file and rest of the file contents would be remains same.

HP,

2 5385

I have been working on one thread which manage and control a couple of circular buffers. It has api for other thread to access. As the thread grows bigger and bigger, I split it as 3 to 4 threads which need to share common buffers, and also their api could be used by other threads, (not these three threads). Inside api, I also allow other threads to access these three threads' common buffers(more than one buffer). SO I have to use mutex to avoid race condition . But I found mutex will be everwhere in all the threads when they update the common buffer. I am wondering whether I could reduce mutex usage(more mutex will hure my system performance). any ideas for how to reduce mutex usage meanwhile to avoid race condition. Thanks

2 5874

I have created one user account.I want to delete that. what can i do?How can i switch to admin account.?

HSBC,

3 7184

In FSMO role PDC Emulator acts as Primary Domain Controller for Legacy servers like NT 4.0 BDC's in our domain.If i have all 2003 servers no BDC's such case will it perform any other kind of services in our domain?

Accenture,

3 7978

29. How to display top 10 users Who | head -10 | wc –w

TCS,

4 12001

How can i recover the linux system after it was crashed. I want step by step process.

Wipro,

1 7597

My root password has been changed, how can i enter into the system without root password?

6 9589

What is the command to see all the processes are working in the last 30 days?

9 14831

How can i recover the linux system after it was crashed by step by step process..

IBM,

3 17439

please tell me what is graphics card ,version , type slot

1 2074

please tell me what is graphics card ,version , type slot

CMS,

1 2077

in which situation we use sjf scheduling algorithem??

2 6169

I want software development lifecycle of windows XP software?

1 2486

Un-Answered Questions { Operating Systems }

1.Have you used vxboot ? 2.Minimum requirement for mirror volume to created ?

2235

What does it cost to upgrade to windows 10?

917

What is the command for cut?

1029

What is the latest windows operating system?

1043

What is the latest version of linux?

1019

what's the latest ram lunch?

2717

How much does a copy of windows 10 cost?

892

What is the latest android operating system?

1065

What is the latest linux kernel?

1023

What is the latest version of microsoft edge for windows 10?

894

Are you in or at the office?

1193

Write a program for Sorting an Array. Which sorting will you prefer?

1038

Can you declare an array without assigning the size of an array?

1200

“int a[] = new int[3]{1, 2, 3}” – This a legal way of defining the arrays?

1273

can any one send me one project on linux ...?

2848

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