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

Which one you will use to implement critical section?

Verifone,

2277

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

Verifone, Verizon,

1 5777

Advantage of SRAM over DRAM ?

College School Exams Tests, HCL, Hughes, Intel,

7 48264

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

Hughes,

5 12236

process means?

BFL,

2 5706

Thread means?

BFL,

5 14213

linked list is implemented by

BFL,

2 5394

semaphore is

BFL,

4 8340

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,

6 12373

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

Wipro,

10 28228

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

Wipro,

1 7902

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

Wipro,

3 13730

Critical section is?

Patni, Wipro,

2 7218

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

Wipro,

2 7624

What are the basic functions of an Operating system?

1 4631

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Un-Answered Questions { Operating Systems General Concepts }

What is the cause of thrashing?

1094

Explain High Severity and Low Priority with example?

1110

Differentiate between pre-emptive and non-pre-emptive scheduling.

1271

Explain about assembler and the functions executed by them?

1143

What is the use of Synchronized keyword?

1076

How long does chkdsk f'r take?

1120

Explain the meaning of kernal.

1174

What is the current microsoft operating system?

1073

Can x86 run 64 bit?

1062

Give a non-computer example of preemptive and non-preemptive scheduling?

1167

Can I upgrade my cpu from 32 to 64 bit?

1047

What is the basic difference between pre-emptive and non-pre-emptive scheduling.

1133

What is aging in operating system?

1178

Different types of real-time scheduling?

1148

Explain the Difference between Process and a Thread.

1109

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