Can primary memory be access directly by DMA devices?

Can primary memory be access directly by DMA devices?

Yes. DMA - Direct Memory Access, as you probably know is a path to increase processor efficiency by not letting it run the trouble of having to control slow devices such as the memory. Instead special chips (DMA controllers) (these may be integrated onto the mobo or the chip nowadays) are used that directly verbs data between the at a tangent devices (extremely slow) to the memory (relatively slow), there by disappearing the fast processor to fetch on with computation which may not entail memory access (the fast processor may use facts in its registers or cache)
Yes! That's what Direct Memory Access is adjectives about ~
Yes sir that's the pretext for having DMA within the first place. Due to DMA the CPU is not required to waste time servicing memory requests from devices and can instead complete its other considerable tasks.
yes