As per the CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025):
"Some companies' IT policies require that you change or reset your password at regular intervals, such as every 90 days. The rationale for having a password expiration policy is that the longer you keep a password, the more likely it is that someone has seen it or written it down." The guide further notes:
"Many companies have password policies in place that enforce strict requirements... The policy can also make users reset their password every so often, such as 90 days." This describes password expiration, which ensures that passwords are periodically updated to reduce security risks.
Verified Reference:
* Chapter 11: Security Best Practices - "Password Changes" (pp. 596-598).

Personally Identifiable Information (PII) refers to any data that can be used to identify an individual uniquely.
Full name and date of birth are classic examples of PII.
"PII includes data such as names, birth dates, Social Security numbers, and other information that can directly or indirectly identify a person." - CompTIA ITF+ Security Essentials Correct answers: A and B

The correct answer is C. Company files saved on a hard disk. Data storage refers to keeping data so it can be used later. A hard disk drive provides long-term, nonvolatile storage and keeps files even when the computer is powered off. RAM is temporary volatile memory, Task Manager shows running processes and system information, and hardware IDs recorded on boards are not the best example of user data storage.
Exact Extract/Reference: The CompTIA Tech+ Study Guide explains that storage devices provide "long-term, nonvolatile, or persistent storage options," meaning they do not lose data when powered off. It also states that HDDs are used for "permanent storage and quick access" and hold user data and files the system needs.

The correct answer is C. 192.168.1.10. A valid IPv4 address is written in dotted-decimal notation, using four decimal numbers separated by periods. Option A is formatted like a MAC address, not an IP address. Option B has no dotted-decimal separation. Option D uses colons, which is not the standard IPv4 dotted-decimal format.
Exact Extract/Reference: The CompTIA Tech+ Study Guide states that an IP address is "typically written in dotted-decimal notation," such as 192.168.10.55, and explains that each number represents an octet. The guide also distinguishes IP addresses from MAC addresses, noting that an IP address is logical and a MAC address is physical.