COMPTIA A+ Practice Exam

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Ace your COMPTIA A+ certification with our practice exam. Engage with a variety of questions including multiple choice and performance-based, complete with hints and detailed explanations. Prepare effectively and boost your confidence for the big day!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

PC2-6400 DIMMs are rated for which voltage?

2.5V
1.8V
1.5V
3.3V

The correct answer is: 1.8V

PC2-6400 DIMMs are rated for 1.8V because it is part of the DDR2 memory specification, which requires a voltage of 1.8V. The other options listed (2.5V, 1.5V, and 3.3V) are not compatible with the DDR2 specification and would not be able to deliver the necessary performance for a PC2-6400 DIMM. In fact, operating a DDR2 DIMM outside of its designed voltage can cause damage to the memory module and potentially the entire computer system. Therefore, the correct voltage for PC2-6400 DIMMs is 1.8V.