The CompTIA Tech+ Certification Exam (FC0-U71)

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

Although the values look numeric, the sequence “1, 10, 2...” suggests they are being treated as strings (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

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).

A query is a request for information from a database. Structured Query Language (SQL) is commonly used to retrieve specific records or information from a data set.

“A query is used to extract and retrieve specific data from a database based on defined criteria.” — CompTIA ITF+ Data Concepts

Correct answer: D

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

This structure uses branching , which allows a program to make decisions based on conditions using " if, " " else if, " and similar statements.

“Branching allows the flow of execution in a program to change based on decisions or conditions.” — CompTIA ITF+ Programming Concepts

Correct answer: D

A variable is a named space in memory used to store data that can change during program execution.

“Variables are memory storage locations used to hold data that can change while a program runs.” — CompTIA ITF+ Programming Concepts

Correct answer: A

UESTION NO: 83 [IT Concepts and Terminology]

A systems administrator resolves a persistent issue with a laptop. Which of the following steps should the administrator take next?

A. Test the theory.

B. Document the findings.

C. Create an action plan.

D. Implement the action plan.

Answer: B

After resolving the issue, the final step in the CompTIA troubleshooting methodology is to document the findings . This includes noting what was done, what caused the issue, and how it was resolved, so others can reference it in the future.

“After resolving and verifying the issue, document the findings, actions taken, and outcomes to complete the troubleshooting process.” — CompTIA ITF+ Troubleshooting Steps

Correct answer: B

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

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