Dram — CompTIA A+ Core 1 (220-1101) Practice Questions

Dynamic RAM (DRAM) is the primary type of volatile memory used as system RAM in computers, storing each bit as a charge in a capacitor that must be continuously refreshed to prevent data loss. The CompTIA A+ Core 1 exam covers DRAM in the context of system memory modules including DDR4 and DDR5 DIMMs, where candidates must understand speed ratings, capacity, and slot compatibility. Because capacitors leak charge, DRAM requires constant refresh cycles, making it slower than SRAM but far cheaper and denser, which is why gigabytes of DRAM serve as main memory. The exam tests practical knowledge of installing, upgrading, and troubleshooting DRAM modules in desktop and laptop systems.

Free questions on dram