Changed FC0-U71 Exam Questions

The question asks how the value 9 can be represented using only ones and zeros, which is the definition of binary. In binary, the decimal number 9 is represented as 1001.

“Binary is a base-2 numeral system that represents numeric values using only two symbols: 0 and 1. Computers use binary to process and store all data.” — CompTIA ITF+ Study Guide

Correct answer: C

Output devices display or present data to users:

“A Smart TV displays visual and audio output, qualifying it as an output device.”

Web cameras, keyboards, and microphones are input devices that capture data rather than display or present it.

A relational database uses tables consisting of rows and columns where a primary key uniquely identifies each row (record). As stated in the CompTIA ITF+ FC0-U71 Official Study Guide:

" Relational databases store data in tables consisting of rows and columns. Each table has a primary key, which uniquely identifies each record. "

" Document and key/value databases are types of NoSQL databases and do not use primary keys in the same structured tabular format. "

Non-structured databases (like object storage or big data repositories) do not enforce primary keys.

The CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025) explains that software requiring activation often stops working after a trial period—typically 30 days—until a valid product key is entered:

“Activating software is a different story—you have to do it. Either you will need to enter the product key before the app will work the first time, or it might work for a few times for free then ask you to activate. Some products… include activation features that lock the installed copy… Usually you have 30 days to do so, or a certain number of uses, before it stops working.”

This clearly identifies a product key as the required input to activate or continue using the software.

Verified Reference:

Chapter 5: Software Applications — “Registering and Activation” (pp. 288–290).