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,

2227

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

Verifone, Verizon,

1 5716

Advantage of SRAM over DRAM ?

College School Exams Tests, HCL, Hughes, Intel,

7 48027

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 12088

process means?

BFL,

2 5601

Thread means?

BFL,

5 14068

linked list is implemented by

BFL,

2 5300

semaphore is

BFL,

4 8204

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 12181

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

Wipro,

10 27965

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 7841

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

Wipro,

3 13623

Critical section is?

Patni, Wipro,

2 7103

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 7531

What are the basic functions of an Operating system?

1 4578

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Un-Answered Questions { Operating Systems General Concepts }

How to find the number of SIMM Pins

1148

How do I do a system restore?

994

What is the difference between mailbox and queue?

1159

Tell me about different OS related issues for a given set of C-programs (mainly address issues address space, paging etc.)

1069

What's the difference between 32 and 64 bit?

993

What is context-switching in multi-threading?

1163

What is the difference between ram and cache memory?

994

Can chkdsk get stuck?

974

Why partitioning and formatting is a prerequisite to installing an operating system?

1599

What is the main difficulty that a programmer must overcome in writing an operating system for a real-time environment?

1429

Stable storage cannot be implemented. (A) Explain why it cannot be. (B) Explain how database system deal with database applications

2274

What are starvation and aging?

1100

Give some benefits of multithreaded programming.

1141

What is GUI?

1102

Describe the Operating System concept of Fragmentation

1134

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