TestOut LabSim A+ Certification Practice Exam

To add memory to a system with an existing DDR3 module, what is the first step you should take?

1. Purchase additional DDR4 modules

2. Check if modules are compatible with the existing one

3. Install the new modules without checking

4. Remove the current module before installation

The correct answer is: Check if modules are compatible with the existing one

The first step in adding memory to a system with an existing DDR3 module is to check if the modules are compatible with the existing one. This involves confirming that the new memory modules match the specifications of the existing DDR3 module, including the type (DDR3), speed (measured in MHz), and physical dimensions (such as the number of pins). Memory modules that are incompatible can lead to system instability, failure to boot, or performance issues. By ensuring compatibility, you can avoid potential problems associated with mixing different types of memory, like DDR3 and DDR4, which are not compatible due to different electrical and physical characteristics. Checking compatibility also helps in understanding if the motherboard supports the additional memory, as some motherboards may have specific requirements regarding the maximum supported memory size and configuration (e.g., dual-channel configurations). This step fosters a more reliable and effective upgrade process, ensuring that the memory works correctly with the existing system components.