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.

How many pins does a standard DIMM for DDR2 and DDR3 memories have?

184 pins
200 pins
240 pins
288 pins

The correct answer is: 240 pins

A standard DIMM (Dual Inline Memory Module) for DDR2 and DDR3 memory has 240 pins. This is important for understanding memory compatibility because each generation of DDR memory (DDR, DDR2, DDR3, and DDR4) has a different pin configuration. In the case of DDR2 and DDR3, 240 pins are utilized for the module itself, allowing the motherboard to establish data and power connections effectively. The increased number of pins compared to earlier generations (like DDR which has 184 pins) contributes to improved data transfer rates and overall performance. Maintaining the correct pin count is crucial when selecting compatible memory for a computer system, as attempting to install a module with the wrong configuration would result in incompatibility issues. Therefore, recognizing that DDR2 and DDR3 both utilize the 240 pins standard is essential for anyone working with memory upgrades or replacements in personal computers.