Secondary Memory,I/O interfce(DMA,Interrupts)
1.

The main reason for the discontinuation of semi conductor based storage devices for providing large storage space is _________

A.  

Lack of sufficient resources

B.  

High cost per bit value

C.  

Lack of speed of operation

D.  

None of the mentioned

2.

The digital information is stored on the hard disk by ____________

A.  

Applying a suitable electric pulse

B.  

Applying a suitable magnetic field

C.  

Applying a suitable nuclear field

D.  

By using optic waves

3.

For the synchronization of the read head, we make use of a _______

A.  

Framing bit

B.  

Synchronization bit

C.  

Clock

D.  

Dirty bit

4.

One of the most widely used schemes of encoding used is _________

A.  

NRZ-polar

B.  

RZ-polar

C.  

Manchester

D.  

Block encoding

5.

The drawback of Manchester encoding is _________

A.  

The cost of the encoding scheme

B.  

The speed of encoding the data

C.  

The Latency offered

D.  

The low bit storage density provided

6.

The read/write heads must be near to disk surfaces for better storage.

A.  

True

B.  

False

7.

_____ pushes the heads away from the surface as they rotate at their standard rates.

A.  

Magnetic tension

B.  

Electric force

C.  

Air pressure

D.  

None of the mentioned

8.

The air pressure can be countered by putting ______ in the head-disc surface arrangement.

A.  

Air filter

B.  

Spring mechanism

C.  

coolant

D.  

None of the mentioned

9.

The method of placing the heads and the discs in an air tight environment is also called as ______

A.  

RAID Arrays

B.  

ATP tech

C.  

Winchester technology

D.  

Fleming reduction

10.

A hard disk with 20 surfaces will have _____ heads.

A.  

10

B.  

5

C.  

1

D.  

20