CompTIA Network+ Practice Test for Subdomain 1.1 #02

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Welcome to today’s CompTIA Network+ practice test!

This practice test uses our new UI!

Today’s practice test is based on Subdomain 1.1 (Explain concepts related to the Open Systems Interconnection (OSI) reference model.) 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 1.1 #02
10 questions • Single best answer
Question 1
A network architect at a university is reviewing device configurations to ensure only authorized users can access the network. The architect implements port-based authentication requiring credentials before granting access. Which technology is being used?
    Question 2
    A security analyst at a financial firm is configuring a firewall rule to block traffic from a specific IP address while allowing all other traffic. Which concept is being applied?
      Question 3
      A network administrator notices unusual traffic patterns and wants to analyze packets in real time. Which tool should be used?
        Question 4
        A technician is troubleshooting a secure web application that fails to load. The browser reports certificate errors. Which protocol is MOST likely involved?
          Question 5
          A network engineer wants to remotely manage a router securely over the internet. Which protocol should be used?
            Question 6
            A systems administrator configures a device to automatically obtain an IP address and network settings. Which protocol is responsible?
              Question 7
              A technician is investigating why users cannot access a website using a domain name but can access it via IP address. Which service should be checked?
                Question 8
                A network administrator wants to monitor bandwidth usage and device statistics across the network. Which protocol should be used?
                  Question 9
                  A user reports that email messages are not being downloaded from the mail server to their client. Which protocol should be checked?
                    Question 10
                    A technician is troubleshooting connectivity and wants to verify that a remote host is reachable at the network layer. Which tool should be used?
                      Answered: 0/10

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