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

Windows (3805)
Linux (2255)
Unix (1343)
Solaris (894)

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

Operating Systems Interview Questions

Questions Answers Views Company eMail

ndd -get /dev/hme0 link-mode

Satyam, Wipro,

3 7093

solaris booting process.

HCL, Satyam, Wipro,

4 10205

what are bootloaders in solaris booting? bootblk, ufsboot

Satyam, Wipro,

3 11361

what are the daemons running In NIS? how to do u create NIS users and update Maps?

Satyam, Wipro,

5 13694

what is multihomed system?

Satyam, Wipro,

2 6867

What is the difference between semaphore and spinlock?

1 6542

what is the advantages of using Windows XP?

CTS,

6 11922

Tell me the 5 differences between Linux and Unix?

4 10466

What is the difference between RedHat linux and Fedora and Ubuntu?

CSC,

3 14317

What is 2 tier and 3 tier?

2 4124

1) What is an Virtual memory? 2) How do we test API's in both Windows/Linux/Unix? 3) What is an IOCTL? 4) How do you open a char device through API's? 5) What is major num/ minor num? 6) What is the max num for minor num? 7) Who gives you the major / minor numbers? 8) Reverse a string using recursive func. 9) fork/vfork/clone. 10) What does fork returns? 11) What is a zombie process? 12) What happens when a child completes before parent tries to wait for it? 13) Interrupt handlers, top-hdnl....?

TCS, Wipro,

2466

hi in our system not conected to sharing any folders why ? can u pls xplain

HCL,

10 14817

can we use cat command as an editor ..???

TCS,

12 23732

Explain the more details of vmstat output?

IBM,

2 10085

whenever you are creating a new user (while creating user every time) file /etc/passwd file inode number will be changed why????

Accel,

1 6363

Un-Answered Questions { Operating Systems }

Can I delete temporary files?

915

Where can I find the windows explorer?

857

What is delayed write in unix?

935

how would you change the default o.s. Boot option with some interval say 30 seconds in linux?

899

Will I lose windows 10 if I factory restore?

846

How much ram do I need for gaming?

1068

How do I open edge in windows 10?

891

What is runtimebroker exe?

964

What is the state of the processor in windows operating system?

Who invented semaphore?

842

Where the system time is stored? In processor or in separate timer ic for that?

951

Which is better chkdsk r or f?

940

Is hashtable throw concurrentmodificationexception?

759

How long does it take to upgrade from windows 7 to windows 10?

810

What to do if windows 10 is not starting?

837

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