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Operating Systems General Concepts Interview Questions

Which one you will use to implement critical section?

1588

Which one is not needed for Multi-pgm. enviornment?

3809

Advantage of SRAM over DRAM ?

44296

RAM chips arranged in 4X6 array and of 8kX4bit capacity each. How many address lines reqd. to access each byte a. 12 b. 16 c.15 d. 17

9726

process means?

BFL,

4166

BFL,

11826

BFL,

3859

semaphore is

BFL,

5373

abcD+abcd+aBCd+aBCD then the simplified function is ( Capital letters are copliments of corresponding letters A=compliment of a) [a] a [b] ab [c] abc [d] a(bc)* [e] mone (bc)*=compliment of bc

NDS, Wipro,

9356

A 12 address lines maps to the memory of [a] 1k bytes [b] 0.5k bytes [c] 2k bytes [d] none

22975

In a compiler there is 36 bit for a word and to store a character 8bits are needed. IN this to store a character two words are appended .Then for storing a K characters string, How many words are needed. [a] 2k/9 [b] (2k+8)/9 [c] (k+8)/9 [d] 2*(k+8)/9 [e] none

6597

Virtual memory size depends on [a] address lines [b] data bus [c] disc space [d] a & c [e] none

11535

Critical section is?

5207

If A>B then F=F(G); else B>C then F=G(G); in this , for 75% times A>B and 25% times B>C then,is 10000 instructions are there ,then the ratio of F to G [a] 7500:2500 [b] 7500:625 [c] 7500:625 if a=b=c else 7500:2500

6185

What are the basic functions of an Operating system?

3486

Un-Answered Questions { Operating Systems General Concepts }

What is pipelining in reference to ram?

423

What is the difference between af_inet and pf_inet?

377

How do I dual boot my pc?

370

How does DMA increase system concurrency? How does it complicate hardware design?

452

What are the different functions of Syntax phase, Sheduler?

457

How long does chkdsk take to run?

376

Explain translation lookaside buffer?

523

Give some benefits of multithreaded programming.

460

Give an example of Priority Inversion in Scheduling. What are the consequences of Priority Inversion?

409

390

Can x86 run 64 bit?

378

What is the difference between chkdsk r and f?

352

What is operating system and type of operating system?

382

What is validity fault?

435

How you can check whether a machine is 64 bit or 32 bit?

399