Practice Free FC0-U71 CompTIA Tech+ Certification Exam Exam Questions Answers With Explanation

A console or command-line interface (CLI) allows users to input text-based commands that the computer can execute.

“The console (or command prompt or terminal) allows direct command input to control an operating system or application without using a graphical interface.” — CompTIA ITF+ Guide

Services are background processes.

Attributes define properties of objects or elements.

Processes are executing programs but are not used for inputting commands.

Correct answer: D

According to the CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025):

“The rules and structure of the database are called its schema. It defines the tables, forms, reports, queries, data types allowed, and pretty much everything else about the database.”

It also clarifies:

“The logical schema outlines the structure of the database, such as the tables and their fields (columns), and relationships between tables.”

Thus, an outline of a database’s structure is called a schema.

Verified Reference:

Chapter 7: Database Fundamentals — “Schema” (pp. 392–393).

The CompTIA Tech+ Study Guide provides a conversion table for storage units:

“1 bit = 1 bit, a single 0 or 1.

8 bits = 1 byte (one text character).

1,000 bytes = 1 kilobyte (KB).”

Thus, 8 bits equals 1 byte.

Verified Reference:

Chapter 1: Core Hardware Components — Table 1.2 “Bit and Byte Conversions” (p. 36).

The correct answer is C. Generative. The typing error “Al” should be corrected to “AI.” Drafting a digital advertisement requires creating new content, such as marketing text, images, or other creative material. Generative AI is used to create content. Predictive AI predicts or suggests future actions. An AI assistant helps with general tasks, and a chatbot usually responds to specific user questions or customer-service interactions.

Exact Extract/Reference: The CompTIA Tech+ Study Guide states, “The realm of generative AI focuses on creating content, including text, images, or videos.” It also says AI-generated content can include text forms and visual content, such as artwork, company logos, or videos.

A GPU (Graphics Processing Unit) is a specialized processor designed to perform calculations related to rendering images and videos. It’s an example of a processing component.

“The GPU is a processor dedicated to graphical computations and image rendering, assisting or replacing the CPU in handling visual data.” — CompTIA ITF+ Hardware Essentials

Correct answer: C

The CompTIA Tech+ Study Guide explains:

“For a table in a database to be relational, it must have a primary key. In fact, its creation is mandatory when a table is created. A primary key is one or more fields whose data is used to identify a record uniquely.”

It further adds:

“Primary keys for tables are stored in an index, which enforces the uniqueness requirement.”

Hence, the unique identifier for records in a relational database is the primary key.

Verified Reference:

Chapter 7: Database Fundamentals — “Primary Key” (pp. 394–395).

According to the CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025), one of the five critical steps when configuring a wireless router is to change the administrator username and password:

“The Wi-Fi Alliance lists five critical keys to setting up a secured wireless router:

Change the router’s SSID.

Change the administrator username and password. Make sure that it’s a strong password.

Enable WPA3 or WPA2 Personal.

Choose a strong security passphrase.

Connect clients using the same security mode.”

This ensures unauthorized users cannot log in to the router’s settings.

Verified Reference:

Chapter 8: Networking Concepts and Technologies — “Setting Up a Small Wireless Network” (pp. 463–467).

In CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025), the section “Reviewing Throughput Speeds” explains:

“The most basic measure of throughput is in bits per second (bps)—that is, how many bits are transmitted across the network media (or wireless connection) any given second. Each of the following designations increases that speed by 1000 times:

? Kilobits per second (Kbps)

? Megabits per second (Mbps)

? Gigabits per second (Gbps)

? Terabits per second (Tbps)”

This shows that Mbps (megabits per second) is the standard measurement unit for Internet connection speed.

802.11X is a wireless security standard,

MHz measures processor frequency, and

Bytes measure data size, not transfer rate.

Verified Reference:

Chapter 8: Networking Concepts and Technologies — “Reviewing Throughput Speeds” (pp. 424–425).

Chapter 2: Peripherals and Connectors — “Throughput units of measure” (p. 80).

Task management tools such as Task Manager in Windows or Activity Monitor in macOS allow users to monitor running applications and processes. They also provide the functionality to force-close (end) applications that are not responding.

“Task Manager provides a way to close applications that are unresponsive and manage running processes.” — CompTIA ITF+ Official Guide

Correct answer: A

Application data refers to user-generated or application-specific files that are critical to retain. This includes saved work, preferences, and databases. These must be included in backups to ensure continuity and recovery.

“Application data and user-generated content should be prioritized in backups to ensure critical information is retained during restoration.” — CompTIA ITF+ Data Protection

Correct answer: B

A cable lock (also called a Kensington lock) physically secures the laptop to a fixed object, making it difficult to steal in public spaces.

“Cable locks are physical security devices used to deter laptop theft by anchoring the device to a desk or other stationary object.” — CompTIA ITF+ Official Guide

A. Firewall is software-based and protects data, not the device.

B. Privacy shields prevent screen visibility, not theft.

C. USB locks prevent port access but not physical theft.

Correct answer: D

If the student’s built-in camera isn ' t functioning, it is likely due to a missing or outdated device driver. Updating the camera driver allows the OS to properly interface with the hardware.

“Drivers are essential software that enables communication between the OS and hardware devices. A malfunctioning camera often points to a driver issue.” — CompTIA ITF+

Correct answer: B

In object-oriented programming, methods are functions or procedures associated with an object that perform actions such as retrieving data:

“Methods are actions that an object can perform. They typically manipulate or retrieve data stored within the object.”

Variables store data, attributes define properties, and loops control repetition but do not directly handle data retrieval within objects.

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

The CompTIA Tech+ Study Guide details that wireless performance and range are significantly affected by interference:

“Interference from other electronics and obstructions will lower the data rate. Radio frequency interference (RFI) from communications devices will degrade the signal. Microwave ovens and electrical motors are notoriously harsh on wireless signals. Solid objects, especially concrete block walls and steel, cut down on range as well.”

Hence, interference is the most likely cause for the reduced wireless coverage.

Verified Reference:

Chapter 8: Networking Concepts and Technologies — “Wireless Interference and Attenuation” (pp. 440–441).

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).

The CompTIA Tech+ Study Guide states:

“Floats are numbers that include decimals. Integers are whole numbers with no decimals, and strings are text.”

An example from the book:

“It’s a float data type, which is a number with a decimal place.”

Therefore, -2.34 represents a float.

Verified Reference:

Chapter 6: Software Development Concepts — “Data Types and Structures” (pp. 372–373).

The CompTIA Tech+ Study Guide classifies critical data as essential information that organizations depend on for daily functioning:

“Critical data is information without which an organization cannot function effectively. Examples include customer records, transaction data, and operational databases. The loss or corruption of such data can significantly impact business continuity.”

This type of data differs from “big data,” which refers to massive data sets used for analytics, and from “monetized data,” which refers to data sold or used for financial gain.

Verified Reference:

Chapter 12: Data Continuity and Computer Support — “Understanding Data Importance and Critical Data” (pp. 619–621).

The correct answer is B. Firewall. A firewall filters network traffic based on configured rules. To disallow inbound file-sharing connections, the firewall can block the relevant inbound traffic. Anti-malware scans for malicious software, multifactor authentication verifies identity, and certificates help establish trust or encryption, but a firewall is the correct control for blocking inbound network connections.

Exact Extract/Reference: The CompTIA Tech+ Study Guide states that firewalls “filter inbound and outbound network traffic based on rules defined by the administrator.” It also explains that host-based firewalls protect one computer and that Windows includes Microsoft Defender Firewall. The guide further explains that firewall ACLs determine which traffic is passed and which traffic is blocked.

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).

A flat file is a simple database format often stored as a plain text or CSV file. It is ideal for small data sets where speed and simplicity are required.

“Flat files are simple and fast for storing small amounts of data and are easy to process without requiring a full database management system.” — CompTIA ITF+ Data Concepts

Correct answer: A

Wireless interference is often caused by environmental factors such as proximity to kitchens, which may contain microwaves and other electronic devices operating on the same 2.4 GHz frequency used by many Wi-Fi networks. The CompTIA ITF+ FC0-U71 Official Study Guide explains:

“Wireless signals are subject to interference from physical objects, walls, appliances, and other electronic devices operating on the same frequency.”

“Microwave ovens and cordless phones are common sources of interference for Wi-Fi networks.”

In this case, the user ' s proximity to the kitchen is causing interference, not access control or standards issues.

The correct answer is A. CPU. The CPU, or central processing unit, is the processor that controls and directs computer activities. The operating system provides instructions, and the CPU processes them. An HDD stores data, RAM temporarily stores active data and instructions, and a NIC provides network connectivity. Only the CPU executes instructions.

Exact Extract/Reference: The CompTIA Tech+ Study Guide states that the role of the CPU is “to control and direct all the activities of the computer” and that the terms “processor” and “CPU” are interchangeable. It also explains that the processor “just does what it’s instructed to do.”

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

The correct answer is A. Flowchart. A flowchart is used before coding to visually plan how a program flows from one step to the next. A linear sequence is a set of ordered logical steps, and a flowchart is designed to show that order clearly. Object-oriented programming is a programming model based on objects and classes, not a planning tool for a sequence. Branching is logic that chooses between paths, and Boolean is a true/false data type or result.

Exact Extract/Reference: The Tech+ Study Guide states that “A flowchart is a visual representation of a program that uses boxes to represent the logic” and that flowcharts help developers “visualize the flow of the program.” It also states that flowcharts show the “order of operations within a program.” The review answer confirms that “A flowchart is designed to depict visually the sequence of events and logic within a program.”

The correct answer is C. Databases provide better data organization, indexing, and querying. A flat file is a two-dimensional structure made of rows and columns, such as a simple spreadsheet. Databases are better for larger, more complex, multiuser, scalable, searchable data systems. Databases can manage relationships between data points, support queries and reports, and provide stronger data persistence, availability, and security. A flat file does not represent a relational system, and query languages are associated with databases rather than basic flat files.

Exact Extract/Reference: The Tech+ Study Guide explains that a flat file has “two dimensions, rows and columns,” while databases can “manage far more complicated relationships between data points.” It also states that databases are better when multiple users, large quantities of data, speed, scalability, data persistence, data availability, and security matter. The guide further states that databases can be queried and reports can be run from them.

The correct order of storage units from smallest to largest is:

Kilobyte (KB)

Megabyte (MB)

Terabyte (TB)

Petabyte (PB)

“A kilobyte is approximately 1,000 bytes. It is smaller than a megabyte (1 million bytes), terabyte (1 trillion bytes), or petabyte (1 quadrillion bytes).” — CompTIA ITF+ Reference

Hence, C. Kilobyte is the smallest unit listed.

The correct answer is C. Onboard NICs are built into the motherboard. An onboard NIC is integrated into the motherboard, while an expansion card NIC is a separate add-on card installed into an expansion slot. The question asks for the primary difference, not speed or cost. Onboard does not automatically mean faster or more expensive.

Exact Extract/Reference: The CompTIA Tech+ Study Guide states that Tech+ objective 2.2 expects knowledge of “wired and wireless cards as well as onboard (integrated into the motherboard) versus expansion cards.” It also explains that “most computers today have the NIC circuitry integrated into their motherboards.”

Recording user actions is an example of accounting, which helps track what users do on a system, especially for auditing purposes.

“Accounting refers to the recording and logging of system activities, including tracking user actions within applications or services.” — CompTIA ITF+

Correct answer: A

In the database schema shown in the images, there are four rows (excluding the header row) representing data entries for four people (John, Jane, Allison, and Anna).

Each row represents a record in the database table, also known as a tuple. The term record refers to a complete set of fields (ID, Name, and Age) for one entry. So, counting the four rows:

John

Jane

Allison

Anna

That makes a total of 4 records in the database schema.

Anti-malware software is specifically designed to detect, quarantine, and remove malicious software from a system. It is the most appropriate tool for protecting a computer after a suspicious or infected file is downloaded.

“Anti-malware software scans downloaded files and running processes to identify and remove malicious software, providing real-time protection against viruses, trojans, and spyware.” — CompTIA ITF+ Study Guide

Other options:

B. Firewall – Prevents unauthorized access but doesn’t clean infections

C. Patching – Prevents exploitation of known vulnerabilities, not infection removal

D. Permissions – Limit access but do not remove malware

Correct answer: A

Account logs provide details about authentication attempts and can confirm whether a user successfully logged in or was denied access.

“Authentication events are recorded in system and application logs, helping verify login success or failure.” — CompTIA ITF+ Security Concepts

Correct answer: A

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.

A char (character) represents a single letter, number, or symbol. It differs from a string, which is a sequence of characters.

“The char data type stores a single alphanumeric character or symbol.” — CompTIA ITF+ Programming Fundamentals

Correct answer: C

A password reuse policy prevents users from using the same password across multiple platforms or reusing previously used passwords. This is a best practice to reduce the risk of credential stuffing attacks.

“Password reuse policies help ensure users do not reuse old or existing passwords across multiple platforms, reducing exposure from compromised accounts.” — CompTIA ITF+ Security Objectives

Correct answer: A

Compiled languages (e.g., C, C++, Go) are translated into machine code before execution, making them faster and more efficient at runtime than interpreted or scripting languages.

“Compiled code is translated into machine language before execution, providing faster performance compared to interpreted code.” — CompTIA ITF+ Software Concepts

Correct answer: B

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.

The CompTIA Tech+ Study Guide explains:

“Solid-state drives (SSDs) use flash memory, which is non-magnetic and non-volatile. They have no moving parts, unlike HDDs, which use magnetic platters.”

It further notes:

“Conventional hard drives have spinning platters and read/write heads, whereas SSDs use flash memory. SSDs are faster but generally more expensive than their HDD counterparts.”

Therefore, SSD (solid-state drive) meets all the listed requirements.

Verified Reference:

Chapter 1: Core Hardware Components — “Exploring Storage and Expansion Devices” (pp. 35–60).

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.

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

RAM (Random Access Memory) in smartphones and computers is most commonly measured in gigabytes (GB) today. Typical smartphone RAM ranges from 2GB to 16GB depending on performance and price.

“Memory capacity in modern devices like smartphones is measured in gigabytes (GB), reflecting their need to support multitasking and app usage.” — CompTIA ITF+ Official Resources

Other options:

KB and MB were used in earlier computing generations.

TB is used for storage, not RAM.

Correct answer: A

An e-reader is designed specifically for reading digital books in a portable, lightweight format:

“E-readers are mobile devices optimized for reading electronic books, offering portability, long battery life, and digital storage of thousands of titles.”

Servers, external drives, and workstations are either not portable or not designed for reading books.

A printer is an output device because it receives digital data from a computer and converts it into a printed physical format (such as paper).

“Output devices display or reproduce information from the computer. Examples include monitors, speakers, and printers.” — CompTIA ITF+ Fundamentals

Correct answer: B

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.

The CompTIA Tech+ Study Guide clearly defines:

“To talk to the hardware, operating systems use specialized programs called device drivers, or drivers for short. A driver tells the OS how to talk to the specific piece of hardware and how to use its features. If there is no driver for that OS, then the hardware will not be compatible with it.”

Hence, drivers are the software components that control and enable communication between the OS and hardware devices.

Verified Reference:

Chapter 4: Operating Systems — “Coordinating Users and Hardware” (pp. 208–209).

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).