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Computer Science Set-1
Operating System
24

Operating System MCQ with Answers

24) Which types of file organization are supported by magnetic tape

random files

contiguous sequential file

indexed sequential file

all of these

Answer is:

contiguous sequential file

Operating System MCQ with Answers

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25) Shared sub-directories and files are example of

a cyclic graph directory

tree structured direction

one level directory

none of these

Answer is:

a cyclic graph directory

26) Consider six files : F1, F2, F3, F4, F5, F6 with corresponding sizes 100, 200, 70, 40, 250 and 50 respectively, the files are to be stored on a sequential device in such a way that as to optimize access time. In what order should the files be stored?

F6, F5, F4, F3, F2, F1

F1 F2, F3, F4, F5, F6

F5, F2, F1, F3, F6 , F4

F4, F6, F3, F1 F2, F5

Answer is:

F4, F6, F3, F1 F2, F5

27) Which type of design problem in file system?

How the file system should look to the user

Algorithm and data structure must be created to map the logical file system onto the secondary storage device

Both (a) and (b)

None of these

Answer is:

Both (a) and (b)

28) Consider six files F1, F2, F3, F4, F5 and F6 of corresponding sizes 100, 200, 70, 40, 250 and 50 respectively. If the files are stored in such a manner to optimize access time, what will be the approximate average access time of a record from one of the six files on the sequential device ?

131

198

286

433

Answer is:

286

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