RAM is volatile memory so you need to save your work before turning the computer off,is indeed volatile because of it's primary nature,so there is a need ]for back-up pin the advanced technology.By ibnbassoft.
Non-volatile memory, nonvolatile memory, NVM or non-volatile storage, is computer memory that can retain the stored information even when not powered. Examples of non-volatile memory include...
It depends on the type of cache memory.
In a typical processor, it is volatile. But on hard drives, it is non-volatile cache.
So the answer is: It depends.