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CompTIA® A+® Complete Deluxe Study Guide: Exams 220-901 and 220-902, 3rd Edition by Toby Skandier, Emmett Dulaney, Quentin Docter

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Appendix A Answers to Review Questions

Chapter 1: Motherboards, Processors, and Memory

  1. A. The spine of the computer is the system board, otherwise known as the motherboard. On the motherboard, you will find the CPU, underlying circuitry, expansion slots, video components, RAM slots, and various other chips.
  2. C. DDR SDRAM is manufactured on a 184-pin DIMM. DIMMs with 168 pins were used for SDR SDRAM. The SIMM is the predecessor to the DIMM, on which SDRAM was never deployed. DIMMs with 240 pins are used for DDR2 and DDR3 SDRAM.
  3. B. Remember the 8:1 rule. Modules greater than but not including SDR SDRAM are named with a number eight times larger than the number used to name the chips on the module. The initials PC are used to describe the module, ...

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