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 267848

How to communicate between difference process?

HP, IBM,

2 11581

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

HP,

1 4744

What is scheduling and How it effects the processor efficiency?

HP,

2 5605

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

HP,

6 16661

What is the best suited algorithm to avoid internal fragmentation?

HP,

2 9744

How to escape from external fragmentation?

HP,

2 5856

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

HP,

2747

What is the difference between mutex and semaphore?

HP, Microsoft,

14 61324

What are counting semaphores?

HP, IBM,

4 17144

which is best among semaphores and mutexes?

HP,

2 7627

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

HP,

2 7053

What are named pipes?

HP,

3 7012

What is the signal?

HP,

1 5577

What is the highest priority software interrupt?

HP,

1 6038

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Un-Answered Questions { Operating Systems General Concepts }

Which event determines that all the controls are completely loaded into memory?

1007

How do I uninstall remnants of uninstalled programs?

843

What are real-time systems?

1008

Differentiate between the user mode and monitor mode.

1034

Can I use x86 on 64bit?

908

Briefly explain FCFS.

1113

What is the basic function of paging?

1170

How do I do a system restore?

952

What is a critical section in os?

935

Is safari the same as internet explorer?

826

What are the differences between Real Time Operating System (RTOS) and General Purpose Operating Systems (GPOS)?

992

What are the 7 layers of networking?

966

Where is the root directory?

897

How is the maximum addressable memory calculated?

969

How much ram can a 64 bit system use?

942

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