Welcome to today’s CompTIA Network+ practice test!

This practice test uses our new UI!

Today’s practice test is based on Subdomain 4.1 (Explain the importance of basic network security concepts) from the CompTIA Network+ N10-009 objectives.

This beginner-level practice test is inspired by the CompTIA Network+ (N10-009) exam and is designed to help you reinforce key networking 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 Network+ certification. Use them to test your knowledge, identify areas for improvement, and build daily cybersecurity habits.

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

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

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

CompTIA Network+ Practice Test for Subdomain 4.1 #01
10 questions • Single best answer
Question 1
A security analyst at a financial institution is reviewing network design documents and emphasizes the importance of protecting data confidentiality, integrity, and availability. Which concept is the analyst focusing on?
    Question 2
    An administrator at a retail company enforces policies requiring users to log in with unique credentials and verifies their identity before granting access. Which security concept is being implemented?
      Question 3
      A systems engineer ensures that employees only have access to the resources necessary for their job roles. Which principle is being applied?
        Question 4
        A cloud administrator configures systems so that no user or device is automatically trusted, even if inside the network perimeter. Continuous verification is required. Which model is this?
          Question 5
          A network engineer implements multiple layers of security controls including firewalls, IDS, and endpoint protection. Which concept does this represent?
            Question 6
            An organization requires users to verify their identity using a password and a one-time code sent to their phone. Which concept is being applied?
              Question 7
              A company logs all user activities and reviews them regularly for suspicious behavior. Which security concept does this practice support?
                Question 8
                A network administrator configures systems so that any traffic not explicitly allowed is automatically denied. Which principle is this?
                  Question 9
                  A development team ensures that one person writes code while another reviews and approves it before deployment. Which concept is being applied?
                    Question 10
                    A company ensures that sensitive data cannot be altered without detection by implementing hashing and integrity checks. Which security principle is being enforced?

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