1. The file structure that redefines its first record at a base of zero uses the term

relative organization

key fielding

dynamic reallocation

hashing

2. A file organization component of a VSAM file is

relative record data set.

keyed sequential data set.

entry sequential data set.

all of these

3. Access time is the highest in the case of

floppy disk

cache

swapping devices

magnetic disks

4. A program P reads and processes 1000 consecutive records from a sequential file F stored on device D without using any file system facilities. Given the following: (i) Size of each record = 3200 bytes. (ii) Access time of D = 10 m secs. (iii) Data transfer rate of D = 800 x 103 bytes/sec (iv) CPU time to process each record = 3 m secs. What is the elapsed time of P if F contains unblocked records and P uses one buffer(i.e. it always reads ahead into the buffer)?

12 sec

14 sec

17 sec

21 sec

5. A program P reads and processes 1000 consecutive records from a sequential file F stored on device D without using any file system facilities. Given the following: (i) Size of each record = 3200 bytes. (ii) Access time of D = 10 m secs. (iii) Data transfer rate of D = 800 x 103 bytes/sec (iv) CPU time to process each record = 3 m secs. What is the elapsed time of P if F contains unblocked records and P does not use buffering?

12 sec

14 sec

17sec

21sec

6. A file sometimes called a

collection of input data

data set

temporary place to store data

program

7. In MS-DOS, relocatable object files and load modules have extensions

.OBJ and .COM or .EXE respectively

.COM and .OBJ respectively

.EXE and .OBJ respectively

.DAS and .EXE respectively

8. 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

9. 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

10. Shared sub-directories and files are example of

a cyclic graph directory

tree structured direction

one level directory

none of these