FC0-U71 CompTIA Tech+ Certification Exam Free Practice Exam Questions (2025 Updated)

Achar (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

Task managementtools 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

Anti-malwaresoftware 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

Changing the router's password (particularly the Wi-Fi password) prevents unauthorized users from reconnecting to the network. It’s the most immediate and effective response.

“One of the most effective ways to secure a wireless network is by changing the default and existing passwords to prevent unauthorized access.” — CompTIA ITF+ Security Topics

Calling support may help but doesn’t address the issue directly.

Decreasing signal range may reduce but not eliminate access.

Resetting the router is more disruptive and unnecessary if the password can be changed.

Correct answer: C

Personally Identifiable Information (PII)refers to any data that can be used to identify an individual uniquely.Full nameanddate of birthare 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 pseudocode reads from a block of numbers listed in line 40. This collection of values is structured like anarray—a group of data elements stored together.

“An array is a collection of similar data elements stored in a structured sequence, often referenced or processed in loops.” — CompTIA ITF+ Programming Concepts

Correct answer: B

The units from smallest to largest are:

MB (Megabyte)

GB (Gigabyte)

TB (Terabyte)

PB (Petabyte)

Thus,PB (Petabyte)is the largest unit listed.

“Data storage is measured in bytes, with increasing units from kilobytes (KB) to megabytes (MB), gigabytes (GB), terabytes (TB), and petabytes (PB).” — CompTIA ITF+ Study Guide

Correct answer: C

ALAN (Local Area Network)connects devices in a limited geographical area such as a building or office.

“A LAN is a network that connects computers within a small geographical area such as a home, school, or office building.” — CompTIA ITF+ Networking Fundamentals

Correct answer: C

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 most important consideration when opening a file on anOperating System Graphical User Interface (OS GUI)is thefile extension. A file extension identifies thetype of fileanddetermines which software application can open it. In the official CompTIA ITF+ Student Guide, it is stated that:

“The last part of the file name represents anextension, which describes what type of file it is and is used by Windows to associate the file with an application.”

“Files are usually opened by double-clicking them. You may want to open a file in a software product other than the default, however. When you right-click a file, the shortcut menu displays a list of suitable choices, or you can chooseOpen Withand browse for a different application. You can also use the Default Programs applet to configure file associations.”

“Do not change a file's extension if it is shown. If you delete or change the extension, the file will not be associated with the correct program for opening it.”

This means the OS uses thefile extensionto decide which application to use to open a file.Changing or deleting the extensioncan result in the file not opening properly because it no longer matches the program expected to open it.

The correct order for creating a network cable:

Measure and cut with wire cutter

Strip the wires

Attach Ethernet connector using a crimper

Finally, test the cable with acable testerto ensure connectivity and proper pinout.

“After crimping the RJ-45 connectors, a cable tester is used to validate the electrical continuity and correct wiring order.” — CompTIA ITF+ Curriculum

Correct answer: A

A keyboard allows a user to enter data into a system:

“Input devices allow users to provide data or control signals to the computer; keyboards are primary examples.”

Storage saves data, output displays data, and processing handles data operations.

In flowcharts, adiamondrepresents adecision point— a place where the program branches based on a yes/no or true/false condition.

“A diamond shape in a flowchart is used to depict a decision, indicating that the flow can take different paths based on a condition.” — CompTIA ITF+ Programming Concepts

Correct answer: B

The CompTIA troubleshooting methodology is clearly outlined:

"Once a theory of probable cause has been established, the next step is to test that theory."

Testing confirms whether the identified potential cause is correct before proceeding with action planning, repairs, or documentation.

After identifying the issue, implementing a solution, and verifying functionality (test page), the next step in the troubleshooting process is to document the solution for future reference.

“The final step in the troubleshooting methodology is to document findings, actions, and outcomes to ensure organizational learning and continuity.” — CompTIA ITF+ Study Guide

Correct answer: D

Although the values look numeric, the sequence “1, 10, 2...” suggests they are being treated asstrings(text values), especially if they are not sorted numerically. In programming, strings are sequences of characters—even if those characters are digits.

“String data type is used to store alphanumeric characters, including numeric characters represented as text rather than numbers.” — CompTIA ITF+ Data Concepts

Correct answer: D

USB-Cis commonly used for both charging and data transfer between modern computers and smartphones. It supports high-speed data transmission and is a standard port on most new smartphones.

“USB-C cables support power delivery and high-speed data transfer, and are commonly used to connect smartphones to computers.” — CompTIA ITF+ Guide

VGA is for video output.

Thunderbolt is high-speed, but typically used with Apple or specialized hardware.

NFC is a wireless protocol, not a cable.

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.

Aloopis a programming construct that repeats a set of instructions while a condition is true. This is used to automate repetitive tasks in code.

“Loops are used in programming to execute the same block of code multiple times under specific conditions.” — CompTIA ITF+ Programming Concepts

Correct answer: A