__ read the data by reflecting pulses of laser beams on the surface ?
Magnetic disk
Optical disk
Floppy disk
ROM
Answer: Option B
Similar Questions :
1. Which exception is also known software interrupt ?
Trap
Call
System Call
All of above
Answer: Option C
2. What is full form of LED ?
Low Emitting Diode
Light Emitting Diode
Light Emitting Data
Light Encounter Diode
Answer: Option B
Explanation:
In optical mouse we use pair of LED.
3. An exception condition in a computer system caused by an event external to the CPU is known as ?
Halt
Process
Interrupt
None of above
Answer: Option C
Explanation:
In my own experience I found very few questions with answer "None of above", if you do not know the answer then its always better to guess among other (If there is no negative marking) ;)
4. What Mnemonic represents ?
Strings
Physical Address
Operation Address
Operation codes
Answer: Option D
5. Which memory is assembled between main memory and CPU ?