Computer Organization

Secondary Storage

Question 1
Marks : +2 | -2
Pass Ratio : 100%
For the synchronization of the read head, we make use of a _______
Framing bit
Synchronization bit
Clock
Dirty bit
Explanation:
The clock makes it easy to distinguish between different values red by a head.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
The air pressure can be countered by putting ______ in the head-disc surface arrangement.
Air filter
Spring mechanism
coolant
None of the mentioned
Explanation:
The spring mechanism pushes the head along the surface to reduce the air pressure effect.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
The read/write heads must be near to disk surfaces for better storage.
True
False
Explanation:
By maintaining the heads near to the surface greater bit densities can be achieved.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
The digital information is stored on the hard disk by ____________
Applying a suitable electric pulse
Applying a suitable magnetic field
Applying a suitable nuclear field
By using optic waves
Explanation:
The digital data is sorted on the magnetized discs by magnetizing the areas.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
_____ pushes the heads away from the surface as they rotate at their standard rates.
Magnetic tension
Electric force
Air pressure
None of the mentioned
Explanation:
Due to the speed of rotation of the discs air pressure develops in the hard disk.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
The drawback of Manchester encoding is _________
The cost of the encoding scheme
The speed of encoding the data
The Latency offered
The low bit storage density provided
Explanation:
The space required to represent each bit must be large enough to accommodate two changes in magnetization.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
One of the most widely used schemes of encoding used is _________
NRZ-polar
RZ-polar
Manchester
Block encoding
Explanation:
The Manchester encoding used is also called as phase encoding and it is used to encode both clock and data.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
A hard disk with 20 surfaces will have _____ heads.
10
5
1
20
Explanation:
Each surface will have its own head to perform read/write operation.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
The method of placing the heads and the discs in an air tight environment is also called as ______
RAID Arrays
ATP tech
Winchester technology
Fleming reduction
Explanation:
The Disks and the heads operate faster due to the absence of the dust particles.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
The main reason for the discontinuation of semi conductor based storage devices for providing large storage space is _________
Lack of sufficient resources
High cost per bit value
Lack of speed of operation
None of the mentioned
Explanation:
In the case of semi conductor based memory technology, we get speed but the increase in the integration of various devices the cost is high.