CompTIA Security+ Practice Test of the Day 260611

Welcome to today’s CompTIA Security+ practice test!

This practice test uses our new UI!

Today’s practice test is based on Subdomain 3.3 (Compare and contrast concepts and strategies to protect data) from the CompTIA Security+ SY0-701 objectives.

This beginner-level practice test is inspired by the CompTIA Security+ (SY0-701) exam and is designed to help you reinforce key cybersecurity concepts on a daily basis.

These questions are not official exam questions, nor are they brain dumps, but they reflect topics and scenarios relevant to the Security+ certification. Use them to test your knowledge, identify areas for improvement, and build daily cybersecurity habits.

Note: CompTIA and Security+ are registered trademarks of CompTIA. This content is not affiliated with or endorsed by CompTIA.

To choose CompTIA Security+ practice tests based on specific domains/subdomains, click that link.

Recommended read: Ultimate CompTIA Security+ Study Guide (2026)

CompTIA Security+ Practice Test of the Day 260611
10 questions • Single best answer
Question 1
A data protection officer replaces stored credit card numbers with non-sensitive surrogate values, while the real numbers reside in a separate secured vault. The surrogate has no exploitable relationship to the original. Which method is this?
    Question 2
    A support application displays only the last four digits of a customer's account number, hiding the rest with asterisks on screen. Agents can verify identity without seeing full data. Which method protects the data here?
      Question 3
      To verify file integrity, a system computes a fixed-length one-way digest of each file and compares it later to detect tampering. The original data cannot be recovered from the output. Which technique is used?
        Question 4
        To protect stored data so only holders of the correct key can read it, an organization applies a reversible cryptographic transformation to files on disk. Without the key the contents are unintelligible. Which method is this?
          Question 5
          To comply with data sovereignty laws, a company configures systems so regulated records can only be accessed or stored within specific countries. Requests from other regions are blocked. Which method is applied?
            Question 6
            A company labels patient health records as subject to legal compliance mandates such as HIPAA, requiring strict handling controls. The label reflects external legal obligations governing the data. Which data type is this?
              Question 7
              An organization protects its proprietary manufacturing formula, which provides competitive advantage and is never disclosed publicly. Its value depends entirely on remaining confidential. Which data classification best fits?
                Question 8
                A security team focuses on protecting information as it actively moves across the network between a client and server. Encryption is applied to this flow to prevent interception. Which data state is being secured?
                  Question 9
                  An organization wants to protect sensitive information while it is actively being processed within a running application's memory. At that moment the data is decrypted and operated on by the CPU. Which data state does this describe?
                    Question 10
                    A team encrypts databases and backup files stored on disk to protect information that is not currently moving or being processed. The data simply sits in storage. Which data state is being protected?
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