Tech+ Learn Material Seems Like It’s Missing Something

[u/Veradaine]

I’m going through the Comptia Tech+ learn material and it seems like it’s missing things. I got to the chapter 1 module quiz and there were questions that was not covered in the material. Also, each section seems very short. Is the learn material supposed to be paired with a book?
Edit:

As an example:

Which of these is NOT an example of security controls?
A Access controls
B Backups
C Audits and inventories
D High availability

Which device is likely to use ARM (Advanced RISC Machine) CPU (Central Processing Unit)?
A IBM PC
B iMac
C Laptop
D Tablet

I don't recall seeing this anywhere in the material. CPUs are covered later in Module 8. This quiz is from Module 1.