32 Questions
What is the basic storage device where the O.S., application software, and data are kept?
Disk
What is the time it takes to position the head at the track known as in a movable-head system?
Seek time
What is the most commonly used I/O device for basic storage?
Disk
What is the sum of seek time and rotational delay in disk performance parameters known as?
Access time
What is the average rotational delay for disks other than floppy disks?
8.3ms
What does the seek time consist of?
Initial start up time and time taken to traverse the cyclinders
How is the transfer time to or from the disk calculated?
$T = \frac{b}{r \cdot N}$
In sequential organization, what is the total time to read the first track of a file 128KB long stored on disk occupying 8 adjacent tracks?
45ms
For a file 128 KB long stored on different locations on the disk with random organization, what is the total time to read all sectors?
7373ms
What is the formula for estimated seek time?
$TS = m \cdot n \cdot s$
What are the two key components of seek time?
Initial start up time and time taken to traverse the cyclinders
What does the access time of a disk I/O operation include?
$TS + (1/2r) + [b / (r.N)]$
What is the formula for calculating transfer time to or from the disk?
$T= b / (r \cdot N)$
What does the total average access time consist of?
Ts + (1/2r) + [b / (r.N)]
What is the average rotational delay for floppy disks?
8.3ms
What does fragmented files on disk lead to?
Slower access to scattered sectors of files.
What is the sum of seek time and rotational delay in disk performance parameters known as?
Access time
In sequential organization, what is the total time to read the first track of a file 128KB long stored on disk occupying 8 adjacent tracks?
$8 \times (\text{access time} + \text{seek time})$
What does fragmented files on disk lead to?
Increased seek time
What are the two key components of seek time?
Head positioning and track selection
What is the formula for calculating the estimated seek time of a disk drive?
TS = m.n.s
What is the formula for calculating the transfer time to or from the disk?
T = b / (r.N)
What does fragmented files on disk lead to?
Slower access to scattered sectors
What is the average rotational delay for disks other than floppy disks?
16.7ms
What does the access time of a disk I/O operation include?
Seek time, rotational delay, and queuing delays
What are the two key components of seek time?
Initial start up time and rotational delay
What is the basic storage device where the O.S., application software, and data are kept?
Hard Drive
What is the time it takes to position the head at the track known as in a movable-head system?
Seek time
What is the sum of seek time and rotational delay in disk performance parameters known as?
Access time
What does the total average access time consist of?
Seek time, rotational delay, and transfer time
What does the seek time consist of?
Initial start up time and traversal time
In sequential organization, what is the total time to read the first track of a file 128KB long stored on disk occupying 8 adjacent tracks?
45ms
Test your knowledge of disk I/O operations with this quiz. Explore the details of disk I/O transfer, including the wait for device, wait for channel, seek, rotational delay, and data transfer processes.
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