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

What is FTP?

BMC,

5 10201

In detail elaborate the system? What is driver?

BMC,

2151

What is mutex?

BMC,

2 9930

What are the parts of root node?

BMC, JCE, TCS,

7 16273

What is B+ tree?

BMC, CMC, Satyam, TCS,

6 30757

What is virtual memory?

BMC,

2 9085

in samba server if we share a file like a.txt from unix(solaris) to windows how it displays at windows.wheather like a.txt (or)A.txt.any case sensitive.why?

Wipro,

1 5539

How to send automated email to a set of people at fixed time ?

Accenture, HP,

3 10987

How will retrieves incoming mails from different web sites

HP, Wipro,

4 9899

have you ever got warning message from unix admin that file system running out of space or not enough disk space?what will u do?

HP,

5 9896

Did you work with linux? What flavors and versions?

HP,

5 9233

How do you rate yourself in unix(if 0 is novice and 10 is sys admin)?

HP,

2 7265

How do you find out the server processes running?

HP,

4 10018

How would you find whether a remote server is up or not?

HP,

8 14530

How will you execute a java program inside a kornshell script?

HP,

1 5995

Un-Answered Questions { Operating Systems }

Is it ok to delete old windows updates?

889

Is merge sort better than quick?

888

Is dllhost exe a virus?

929

Can I use windows without activation?

863

How much time does it take to learn data structures?

922

What types of migrations windows easy transfer supports?

942

How do I fix a windows 10 update error?

911

What is ulimit command?

1082

Can windows 7 be upgraded to windows 10?

818

Do solid state drives wear out?

903

Why is arraylist not thread safe?

916

What does resetnavpane command do?

1337

How is unix different from other operating system?

887

Is red black tree balanced?

893

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

4351

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