CompTIA
220-801 · Question #599
220-801 Question #599: Real Exam Question with Answer & Explanation
The correct answer is B: The DDR3 notebooks are the only ones that will accept the new memory.. A DDR3 memory can only work with other DDR3 chips. It cannot work with DDR2. Therefore, the DDR3 memory purchased can only be used to upgrade notebook computers that have DDR3 memory installed.
Question
A PC technician must upgrade memory from 2 GB to 4 GB in twenty Windows 7 notebook computers. Some of the laptops have DDR2 memory, and some have DDR3. The memory purchased for the upgrade is DDR3. Which of the following is the MOST likely outcome of this upgrade?
Options
- AThe DDR2 notebooks will work with DDR3 provided the DDR2 is installed in the first DIMM positions.
- BThe DDR3 notebooks are the only ones that will accept the new memory.
- CThe DDR2 memory will fit into the DIMM positions and work.
- DThe DDR3 memory will not work correctly unless the CAS (CL) values are the same.
Explanation
A DDR3 memory can only work with other DDR3 chips. It cannot work with DDR2. Therefore, the DDR3 memory purchased can only be used to upgrade notebook computers that have DDR3 memory installed.
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