Chapter 1. Hardware

The first domain for the A+ Essentials (220-701) exam is hardware, which focuses on teaching you to identify components and to demonstrate a basic knowledge of hardware technology. This domain is essential because it gives you a background for the other domains and also counts as 27% of the test score, the largest percentage of all the domains. It also includes the most objectives because today’s PCs have such a wide variety of hardware and technology:

The objectives for this domain are as follows:

image 1.1—Categorize storage devices and backup media

1.2—Explain motherboard components, types, and features

1.3—Classify power supplies ...

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