The CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025) defines the least privilege model as:

“One of the key foundations of an authorization system is the least privilege model. This states that users should be granted only the least amount of access required to perform their jobs, and no more. This principle applies to computers, files, databases, and all other available resources.”

This concept ensures that a student cannot access restricted folders such as a teacher’s network folder , because their role does not require that level of access.

Verified Reference:

Chapter 10: Security Concepts and Threats — “Authorization and the Least Privilege Model” (pp. 549–550).

To install and use a printer over a network, the printer must have an assigned IP address so that it can be located and communicated with by other devices on the same network.

“Network printers are assigned IP addresses so computers can locate and send print jobs to them over the network.” — CompTIA ITF+ Networking Guide

Correct answer: B

A byte consists of exactly 8 bits . Bits (binary digits) are the smallest unit of data, and eight of them grouped together form one byte, which is used to represent characters and numbers in digital systems.

“A byte is made up of 8 bits and is the standard unit of data used to represent information such as characters in computing.” — CompTIA ITF+ Fundamentals

Correct answer: C

The CompTIA Tech+ Study Guide lists input devices explicitly:

“Input devices include keyboards, mice, scanners, and web cameras—any device that allows the user to enter data into the computer.”

In contrast, printers and speakers are output devices, while a motherboard is an internal component.

Verified Reference:

Chapter 2: Peripherals and Connectors — “Input and Output Devices” (pp. 102–104).

According to the CompTIA Tech+ Study Guide :

“Changing Default Usernames and Passwords — The first thing a potential hacker will try to use is the default username or password for a device. Always change them.”

It also emphasizes:

“Enabling passwords and changing default usernames and passwords are essential password management best practices.”

Therefore, the correct action after server setup is to change the default usernames and passwords to secure the system.

Verified Reference:

Chapter 11: Security Best Practices — “Managing Passwords” (pp. 594–595).

Encryption protects files by converting them into unreadable formats unless the correct decryption key is provided. The CompTIA ITF+ FC0-U71 Official Study Guide explains:

" Encryption is the process of converting data into a secure format that cannot be read without a decryption key. Only users with the proper key can access the original data. "

File permissions control user access based on OS-level rules, but encryption specifically ensures that only those with the key can read the file even if they access the file storage.

Hidden folders merely conceal files but don’t protect content. Compression reduces file size but doesn’t protect access.

Interference or poor signal strength is a common issue in Wi-Fi networks, especially in distant or obstructed locations like basements.

“Physical obstructions and electronic interference can weaken wireless signals, leading to connectivity issues in areas like basements.” — CompTIA ITF+ Networking Fundamentals

Correct answer: A

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

Generative AI is used to create new content including images, music, videos, or text. This includes tasks like image editing, enhancement, or generation using tools such as DALL·E, MidJourney, or generative adversarial networks (GANs).

“Generative AI creates new data or content, such as images, music, or text. It is commonly used in image editing, graphic design, and media production.” — CompTIA ITF+ Guide

Other AI types:

Assistive AI helps with tasks like navigation or text suggestions.

Predictive AI forecasts outcomes using existing data.

Chatbots simulate conversation, often in customer service.

Cloud storage enables multiple users to access and modify data in real-time from different locations. It also ensures high availability by offering redundancy and online access.

“Cloud storage provides high availability, accessibility, and collaboration capabilities, making it ideal for group projects and remote access.” — CompTIA ITF+ Cloud Technologies

Correct answer: A