Question

The x86-64 architecture provides support for Select one: a. 32-bit physical addresses b. 52-bit physical addresses c. 48-bit physical addresses d. 64-bit physical addresses

Answer 1

52-bit physical addresses

Step-by-step explanation:

(original implementation only supported 40 bits)

Answer is from the AMD Corporation's pdf on AMD64 architecture.

52-bit physical addresses would allow access to 4PB of ram

PS: it's not 64 because that's a virtual memory address not physical