September 2025
Intermediate to advanced
1176 pages
43h 55m
English
book
Complete A+ Guide to IT Hardware and Software: CompTIA A+ Core 1 and Core 2 Exams (V15), 10th Edition
by Cheryl Schmidt, Christopher Lee
Content preview from Complete A+ Guide to IT Hardware and Software: CompTIA A+ Core 1 and Core 2 Exams (V15), 10th Edition
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Glossary
Numerals and Symbols
.. (navigation command) From a Windows command prompt, the two dots (..) represent the parent directory.
+12V A voltage level from the power supply that is used for drive motors, CPU, internal cooling fans, and the graphics card.
+5V A voltage level from the power supply that is used for electronics, the motherboard, adapters, ports, and peripherals.
1.8-inch A storage device form factor.
115V vs. 220V input voltage Some power supplies accept 120 V (listed as 115 V on the certification) or 220 V power from an electrical outlet.
10,000 RPM A hard drive speed. The faster the drive RPM, the faster the transfer rate.
15,000 RPM A hard drive speed. The faster the drive RPM, the faster the transfer rate.
2.4 GHz A common ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.