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

How will you check the disk performance?

Wipro,

2 6292

What are performance tool used

1 4144

Which service assign port no dynamically

1 4018

As a user how he can change is passwd with root privilege.

2 5058

What is default permission of /etc/passwd , /etc/shadow files

Accel Frontline,

7 35771

What is default permission of files and directory?

4 6102

What is UMASK

2 5063

Defalut value for umask

3 5888

Explain setuid, setgid and stickybit

2 7257

How to set passwd never expire for a user

4 13104

How to find the kernel bit version or architecture

5 8885

How to set the time zion

3 4941

How to enable and disable the dtlogin

1 3880

How to change the hostname and Ethernet address in single command

2 5680

How do you add the disk without reboot the server?

2 5469

Un-Answered Questions { Operating Systems }

Does concat mutate array?

918

What is GRUB?

1065

How to Destroy Sockets?

1621

Can I upgrade to windows 10 without losing everything?

801

What is a socket api?

882

How do you sort pseudocode?

879

Who introduced windows?

795

Where standard output is usually directed?

835

What are positional parameters in unix?

1027

when does error daemon start in boot process?

What is ipc message?

965

Which is faster hashmap or hashtable?

921

Explain the main purpose of an operating system?

1135

Is hashset synchronized?

1008

Do I need antivirus on linux mint?

854

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