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

Operating Systems General Concepts Interview Questions

Questions Answers Views Company eMail

What is Difference between thread and process?

AirTies, Azingo, Bloomberg, Encora, Goldman Sachs, HCL, HP, MES, Microsoft, Samsung,

28 270061

How to communicate between difference process?

HP, IBM,

2 11903

What is the best way of communication in multi process environment? ex: getting log from different applications from multi servers?

HP,

1 5013

What is scheduling and How it effects the processor efficiency?

HP,

2 6024

What is virtual memory, if OS didt have that concept What are the problems can arise?

HP,

6 17198

What is the best suited algorithm to avoid internal fragmentation?

HP,

2 10064

How to escape from external fragmentation?

HP,

2 6127

What is difference in managing processes in windows, unix, RTOS?

HP,

2903

What is the difference between mutex and semaphore?

HP, Microsoft,

14 62502

What are counting semaphores?

HP, IBM,

4 17568

which is best among semaphores and mutexes?

HP,

2 7918

which is best among pipes, queues, shared memory and why?

HP,

2 7405

What are named pipes?

HP,

3 7350

What is the signal?

HP,

1 5839

What is the highest priority software interrupt?

HP,

1 6244

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Un-Answered Questions { Operating Systems General Concepts }

What are the necessary conditions for deadlock to occur?

1072

How long does it take to chkdsk 1tb?

1055

What does a 64 bit processor mean?

1036

What is the cause of thrashing? How does the system detect thrashing?

1214

What are the 7 c's of communication?

1070

Explain the resident set and working set of a process?

1150

Explain the difference between trap and trapdoor?

1102

Where are chkdsk logs stored?

1170

Does direct memory manipulation is an unsafe operations, if yes, how?

1138

Explain the difference between internal and external fragmentation in memory management. Suggest ways to reduce them.

1186

Explain Marshalling?

1096

What replaced ifconfig?

1182

What is the trtw/trwt timing?

1228

What is dedicated processor assignment in operating system (os)?

1447

Given a Pid, how will you distinguish whether it is a process or a thread?

1149

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