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 268049

How to communicate between difference process?

HP, IBM,

2 11611

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

HP,

1 4769

What is scheduling and How it effects the processor efficiency?

HP,

2 5633

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

HP,

6 16716

What is the best suited algorithm to avoid internal fragmentation?

HP,

2 9778

How to escape from external fragmentation?

HP,

2 5880

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

HP,

2757

What is the difference between mutex and semaphore?

HP, Microsoft,

14 61445

What are counting semaphores?

HP, IBM,

4 17209

which is best among semaphores and mutexes?

HP,

2 7661

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

HP,

2 7089

What are named pipes?

HP,

3 7046

What is the signal?

HP,

1 5614

What is the highest priority software interrupt?

HP,

1 6070

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Un-Answered Questions { Operating Systems General Concepts }

How does thread synchronization occur in a monitor?

994

What is the most powerful operating system?

987

Explain the concept of the distributed systems?

1045

What is a volatile keyword?

1072

What is a boot-strap program?

1108

Explain paging, faulting, and deadlock?

1077

Explain turnaround time and response time?

998

What is real time operating systems?

1004

How do you check if your computer is 32 or 64 bit?

914

What is the highest ram?

951

Will chkdsk fix corrupt files?

985

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

4315

Is 8gb ram good?

959

What is synchronous and asynchronous process?

965

What is the trtw/trwt timing?

1111

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