UGCNET CSE December 2022: 5

Question

 

Which one of the following types of memory is fastest

1. Cache Memory
2. Register Memory
3. Main Memory
4. Secondary Memory

(Option $1 [39317]) 1$
(Option $2 [39318]) 2$
(Option $3 [39319]) 3$
(Option $4 [39320]) 4$

Answer Given by Candidate : $2$

Answer 1

As we know the memory hierarchy , from CPU  registers are closer and also they are in built in the chip so that cpu can access data from registers fastely. then , if data is not present in registers then goes to cache memory if hit then take the data otherwise from RAM (main memroy ) , then comes secondary memory. so fastest hierarchy is : REGISTERS > CACHE > MAIN MEMORY(RAM) > SECONDARY MEMORY.

HENCE , ANSWER IS 2