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

List at least three things that a running process might do that would cause the scheduler not to move it to the ready state when it stops running.

2 7579

What is an advantage of a large scheduling quantum? What is a disadvantage?

1 8766

Measurements of a certain system have shown that the average process runs for a time T before blocking on I/O. A process switch requires a time S, which is eﬀectively wasted (overhead). The CPU’s eﬃciency is the fraction of its time its spends executing user programs, i.e., executing user processes. For round robin scheduling with quantum Q, give a formula for the CPU eﬃciency for each of the following: (a) Q = ∞ (b) Q > S + T (c) S 4362

Why do inode number start from 1 and not 0 ?

3 13886

is it possible to break the grub password in linux

6 11090

How can you backup and restore DC

IBM,

4 11439

what is ls -ltd?

HCL,

5 15899

how make a bootable dick

Accenture, HCL, Wipro,

2884

what is a solaris toolkit

1 4296

i installed clustering packages.When i try to run it getting LUCI error...what is it..??

2388

How to create NULL files of specific size in solaris ?

IBM,

9 14788

How to change rsc ip in sun V490?

Wipro,

4 17413

what is the difference betweenh the NFS and FTP?

IBM,

4 41772

what are the different types of Backups..?

IBM, SDG,

6 13771

what is NIS Server...?

IBM,

2 6118

Un-Answered Questions { Operating Systems }

How would you delete a directory in linux?

985

What are page frames?

972

What is thread and types of thread?

954

What do you mean by a file path?

996

What is basic data structure?

909

How do you know if I can install 64 bit windows?

805

Explain about lpr filename?

1102

What are the devices represented in unix?

951

Who is unix command?

1040

Explain about refer?

997

What are conditions on which deadlock can occur while swapping the processes?

1128

What does scanning and repairing drive do?

901

How can deadlock be prevented?

925

What is linked list ?

949

What is rundll32 exe virus?

908

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