

InterviewSolution
Saved Bookmarks
1. |
What arises when a copy of data is held both in the cache and in the main memory?(a) stall data(b) stale data(c) stop data(d) wait for the stateThis question was posed to me in an international level competition.This is a very interesting question from Writing Scheme of Cache Memory in chapter Memory Systems of Embedded Systems |
Answer» CORRECT option is (b) STALE data Easy explanation: The stale data arises when the copy is held both in the cache memory and in the MAIN memory. If EITHER copy is modified, the other data become stale and the system coherency can be DESTROYED. |
|