Question 1 |
A magnetic disk has 100 cylinders, each with 10 tracks of 10 sectors. If each sector contains 128 bytes, what is the maximum capacity of the disk in kilobytes?
12,80,000 | |
1280 | |
1250 | |
1,28,000 |
Question 1 Explanation:
Question 2 |
A particular disk unit uses a bit string to record the occupancy or vacancy of its tracks, with 0 denoting vacant and 1 for occupied. A 32-bit segment of this string has hexadecimal value D4FE2003. The percentage of occupied tracks for the corresponding part of the disk, to the nearest percentage is:
12 | |
25 | |
38 | |
44 |
Question 2 Explanation:
Question 3 |
SATA is the abbreviation of
Serial Advanced Technology Attachment | |
Serial Advanced Technology Architecture | |
Serial Advanced Technology Adapter | |
Serial Advanced Technology Array |
Question 3 Explanation:
Question 4 |
Consider a disk pack with 16 surfaces, 128 tracks per surface and 256 sectors per track. 512 bytes of data are stored in a bit serial manner in a sector. The capacity of the disk pack and the number of bits required to specify a particular sector in the disk are respectively:
256 Mbyte, 19 bits | |
256 Mbyte, 28 bits | |
512 Mbyte, 20 bits | |
64 Gbyte, 28 bits |
Question 4 Explanation:
Question 5 |
A hard disk system has the following parameters :
Number of tracks =500
Number of sectors/track =100
Number of bytes /sector =500
Time taken by the head to move from one track to adjacent track =1 ms
Rotation speed =600 rpm.
What is the average time taken for transferring 250 bytes from the disk ?
Number of tracks =500
Number of sectors/track =100
Number of bytes /sector =500
Time taken by the head to move from one track to adjacent track =1 ms
Rotation speed =600 rpm.
What is the average time taken for transferring 250 bytes from the disk ?
300.5 ms | |
255.5 ms | |
255 ms | |
300 ms |
Question 5 Explanation:
There are 5 questions to complete.