Final answer:
DIMMs can be single-sided or double-sided, with double-sided DIMMs providing more than one memory bank that is accessed independently.
Step-by-step explanation:
DIMMs, or Dual Inline Memory Modules, can be single-sided or double-sided. Double-sided DIMMs provide more than one memory bank and are called dual ranked or quad ranked. A memory bank is a section of memory that has a 64-bit data path and is accessed by the processor independently of other banks.