You are working on an older PC and your customer asks if you

You are working on an older PC, and your customer asks if you upgrade the 32-bit CPU and motherboard to 64-bit, will his 32-bit operating system work on the machine. What do you tell him?

A. You tell him that he will have to upgrade his operating system and all of his application software to 64-bit.

B. You tell him that he will have to upgrade his operating system to 64-bit but not his 32-bit application software.

C. You tell him that his operating system should work fine but not all of his 32-bit applications will work.

D. You tell him that his operating system and all of his application software will work exactly the same as it did on 32-bit hardware.

Solution

Option A is correct since 32 bit applications designed for 32 bit length instructions , hence application will no work on 64 bit OS which has 64 bit length instructions