Question

In which writing scheme does all the data writes go through to main memory and update the system and cache?

(a) write-through

(b) write-back

(c) write buffering

(d) no caching of writing cycle

The question was asked in an international level competition.

I'd like to ask this question from Writing Scheme of Cache Memory topic in division Memory Systems of Embedded Systems

Answer 1

The correct choice is (a) write-through

To elaborate: There are different writing scheme in the cache memory which increases the cache efficiency and one such is the write-through in which all the data go to the main memory and can update the system as well as the cache.