Practice Quiz

CompTIA A+ 220-801

Category - 801: Hardware

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The Customer Service Department manager is looking to upgrade his 32-bit processor machines with AMD Athlon 64-bit processors. The manager wants to know if his 32-bit applications (like the 32-bit Windows XP Professional) will run on the 64-bit hardware. What do you tell the manager?
  1. The AMD Athlon 64-bit processor is backward compatible with 32-bit software but not 32-bit operating systems.
  2. The AMD Athlon 64-bit processor is backward compatible with 32-bit operating systems but not 32-bit software.
  3. The AMD Athlon 64-bit processor is not backward compatible with 32-bit operating systems or software.
  4. The AMD Athlon 64-bit processor is backward compatible with 32-bit operating systems and software.
Explanation
Answer: D - The AMD Athlon 64-bit processor is completely backward compatible with 32-bit operating systems and software.

Key Takeaway: Because of the 64-bit processor architecture, a 32-bit operating system will run more efficiently on a 64-bit processor than when using a 32-bit CPU.
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