Question Detail

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.

1. Which types of register holds a single vector containing at least two read ports and one write ports ?

Data system
Vector register
Database
Memory

Answer: Option B

2. If CPU and I/O interface share a common bus than transfer of data between two units is known as ?

Asynchronous
Clock dependent
Synchronous
Decoder independent

Answer: Option C

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. Which memory is assembled between main memory and CPU ?

Primary Memory
Secondary Memory
Registers
Cache Memory

Answer: Option D

5. Which among following is an important data transfer technique ?

Answer: Option C

Explanation:

DMA is Direct Memory Access.