CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Cert Guide

Appendix D

Memory Tables Answer Key

Chapter 1

Table 1-2 Comparison of HDD, SSD, and SSHD

Type of Hard Drive	Cost	Capacity	Speed	Reliability
HDD	Least expensive and readily available	Highest capacity	Slowest because of moving parts and magnetic disks	Has moving parts that can wear over time
SSD	Most expensive, but price is dropping	Lowest capacity, but improving	Fastest	Has no moving parts
SSHD	Midrange cost	Blends high HDD capacity with fast solid-state cache for most-used files	Blends fast solid-state cache with slower magnetic storage	Has moving parts that can wear out, but spins less than HDD

Table 1-4 SODIMM Features

Memory Type	Number of Pins	Notch Location	Notes
DDR3	204	After pin 36	67.6mm long and 30mm high ...