CompTIA Network+ Practice Test for Subdomain 1.7 #03

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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 1.7 (Given a scenario, use appropriate IPv4 network addressing) 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 of the Day 260609
10 questions • Single best answer
Question 1
A network administrator at a mid-sized enterprise is assigning addresses from the 192.168.10.0/25 subnet. She needs to know the valid usable host address range. What is the correct range of host addresses in this subnet?
    Question 2
    A network engineer documents a subnet using dotted-decimal notation: 10.0.0.0 with a subnet mask of 255.255.0.0. What is the equivalent CIDR (slash) notation for this address and mask?
      Question 3
      A network student is studying classful IPv4 addressing. She identifies an IP address beginning with 172 and needs to determine its default class in the classful addressing scheme. Which class does a 172.x.x.x address belong to?
        Question 4
        A network engineer is auditing IP addressing and needs to identify which addresses are RFC 1918 private addresses that must not be routed across the public internet. Which of the following addresses is a valid RFC 1918 private address?
          Question 5
          A network administrator needs to divide 192.168.1.0/24 to provide one subnet for 100 hosts and two subnets for 30 hosts each, minimizing wasted address space. Which addressing technique allows subnets of different sizes within the same address block?
            Question 6
            A network administrator needs to identify the broadcast address for the 172.16.4.0/26 subnet. What is the broadcast address for this subnet?
              Question 7
              A network engineer needs to summarize routes 10.0.0.0/24, 10.0.1.0/24, 10.0.2.0/24, and 10.0.3.0/24 into the smallest single summary route that covers all four networks. What summary route should be advertised?
                Question 8
                A network engineer needs to determine how many usable host addresses are available in a /27 subnet. What is the correct number of usable hosts in a single /27 subnet?
                  Question 9
                  A technician troubleshooting a workstation notices it has an IP address of 169.254.22.50. No DHCP server responded to the client's request. What is the name of the address range the workstation has self-assigned?
                    Question 10
                    A network engineer sends an ICMP echo request to a specific address to verify that the TCP/IP stack on a local workstation is functional. The test succeeds and no traffic leaves the workstation's network interface. Which address was used for this loopback test?
                      Answered: 0/10

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