October 2019
Beginner to intermediate
1040 pages
27h 25m
English
Content preview from CompTIA A+ Core 1 (220-1001) and Core 2 (220-1002) Cert Guide, 5th Edition
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Appendix D. Answer Key to Memory Tables
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 due to 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 |
|---|---|---|---|
DDR |
200 |
After pin 20 |
67.6mm long and 30mm high Notch ... |
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