Final answer:
DDR2 uses 184 pins, DDR3 is not backward compatible with DDR2, and SDRAM does not run synchronized with the system clock, The S in SDRAM stands for synchronous.
Step-by-step explanation:
1) The statement that is true regarding DIMM technologies is that DDR2 uses 184 pins. DDR2 DIMMs use a 240-pin connector, while DDR4 DIMMs use a 288-pin connector.
2) DDR3 is not backward compatible with DDR2. Each DDR memory generation has its specific requirements and cannot be used interchangeably.
3) SDRAM does not run synchronized with the system clock. SDRAM stands for Synchronous Dynamic Random-Access Memory, but it does not necessarily operate at the same frequency as the system clock.
4) The S in SDRAM stands for synchronous, not static. SDRAM is a type of memory that is synchronized with the system clock to transfer data at specific intervals.