Artificial intelligence (AI) powers predictive text by analyzing user input patterns and language models to suggest likely words or phrases.

“AI enables predictive text by using language models and historical input to forecast what the user intends to type next.” — CompTIA ITF+ Emerging Technologies

Correct answer: C

An embedded operating system is used in dedicated devices such as smart appliances, printers, or industrial machines. It performs specific functions and interacts with other systems, like sending alerts.

“Embedded operating systems are designed to run on specialized hardware with a fixed function, such as in appliances or vehicles.” — CompTIA ITF+ Official Guide

Correct answer: B

The CompTIA Tech+ Study Guide explains:

“Firewalls filter network traffic. Firewalls filter inbound and outbound network traffic based on rules defined by the administrator. That list of rules is called an access control list (ACL). By default, most firewalls are configured as default deny, which means that all traffic is blocked unless specifically authorized by the administrator.”

Therefore, a firewall is the network security device that primarily permits and restricts traffic based on predefined rules.

Verified Reference:

Chapter 5: Software Applications — “Software Firewalls” (pp. 316–317).

Chapter 8: Networking Concepts and Technologies — “Firewalls” (pp. 447–448).

Installing software typically requires elevated permissions that standard user accounts do not have. The CompTIA ITF+ FC0-U71 Official Study Guide explains:

“An administrator account provides full system access, including installing or removing software, changing system settings, and managing user accounts.”

The user account does not have these privileges by default.

Least privilege refers to granting only the minimum permissions necessary (which would not typically include software installation for regular users).

Single factor refers to authentication methods, not access levels.

Since the employee is denied installation due to insufficient privileges, administrator access is needed to complete the installation.

The CompTIA Tech+ Study Guide identifies RJ45 as the standard Ethernet connector:

“An RJ45 connector is used to connect network cables to devices such as switches, routers, and computers. It’s the most common connector for Ethernet networking.”

RJ45 connectors terminate Cat 5, 5e, and 6 cables for network communication.

Verified Reference:

Chapter 2: Peripherals and Connectors — “Network Connectors: RJ45” (pp. 90–92).

The CompTIA Tech+ Study Guide explains:

“Remote support software allows technicians to connect to a user’s computer from another location, troubleshoot issues, install applications, and perform updates without physically being at the same site.”

Additionally, the review question section confirms:

“You are setting up a technical support help desk for a new app. What type of software should you get to help the technicians fix problems more effectively?

Answer: Remote support. ”

Thus, the technician in another state uses remote support software to perform the installation.

Verified Reference:

Chapter 5: Software Applications — “Remote Support Software” (pp. 347–348).

The CompTIA Tech+ Study Guide discusses social engineering prevention:

“Social engineering relies on manipulating people rather than technology. The best protection against social engineering is user awareness and verifying identity before sharing information.”

Verifying a user’s identity via a phone call before taking any action (such as password reset or data access) is an essential safeguard against impersonation attempts.

Verified Reference:

Chapter 11: Security Best Practices — “Recognizing Social Engineering and Phishing Attacks” (pp. 586–588).

According to the CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025) , a flowchart is explicitly defined as:

“A flowchart is a visual representation of a program that uses boxes to represent the logic. Flowcharts are critical in the software development process. They should be created before the code is developed, much like blueprints should be drawn before building a house. They help the developers visualize the flow of the program, making it easier to plan out the sections of code needed.”

The guide further elaborates that:

“Flowcharts show the order of operations within a program, including where data input is needed as well as decisions to be made and the logic choices. Different shapes are used to indicate different components. For example, a rectangle is used to indicate a process, whereas a diamond is used to show a decision point.”

This means the graphical depiction of how code executes step by step—including decisions and actions—is known as a flowchart , not pseudocode (which is text-based “fake code” for readability), nor branching or looping (which are logical control structures).

Additionally, in the “Exam Essentials” section of the same guide, it reinforces that:

“Understand what pseudocode and flowcharts are used for. Pseudocode is most often used to annotate the code with comments to make it easier for people to read. Flowcharts help organize the code and plan out a program.”

Verified Reference from CompTIA Tech+ Study Guide, Exam FC0-U71 (3rd Edition, 2025):

Chapter 6: Software Development Concepts — Sections “Flowcharts” and “Exam Essentials” (pages 373–374, 378).

The CompTIA Tech+ Study Guide highlights that:

“If no sound is coming from your speakers, even after confirming they’re powered and connected, check your sound settings. The wrong output device may be selected—especially when multiple audio devices are present.”

This describes a misconfigured output —where the OS is sending audio to the wrong device (e.g., Bluetooth or HDMI).

Verified Reference:

Chapter 4: Operating Systems — “Troubleshooting Sound Devices” (pp. 232–233).

Task management utilities like Task Manager in Windows are used to monitor and manage running applications and processes, including ending unresponsive ones.

“Task Manager is used to view and end processes or applications that are not responding.” — CompTIA ITF+

Correct answer: B