Final answer:
The question is about the process of memory addressing in computers, involving paging and translation from virtual to physical addresses, generally requiring three memory references.
Step-by-step explanation:
The student's question refers to the process of memory addressing in computer systems, particularly the mechanism used by a computer to translate virtual addresses into physical addresses in order to retrieve or store data. This involves a technique called paging, which is a part of memory management in operating systems. When a virtual address is used, the system will often need to access memory multiple times: one to access the page table to find the frame number (p1, p2), and another to access the data at the offset within the page (d). This operation of changing a virtual address into a physical address through a page table can indeed involve three memory references as suggested by the question.