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CompTIA Network+ Practice Tests

CompTIA Network+ Practice Test for Subdomain 5.4 #01

ByThe Test Master

Apr 13, 2026 #CompTIA, #Network+, #performance issues

Welcome to today’s CompTIA Network+ practice test!

This practice test uses our new UI!

Today’s practice test is based on Subdomain 5.4 (Given a scenario, troubleshoot common performance issues) 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 5.4 #01
10 questions • Single best answer
Question 1
A network engineer at a global manufacturing company observes that remote offices experience severe slowdowns when accessing centralized applications during shift changes. Monitoring shows traffic spikes at those times. What is the MOST likely cause?
    Question 2
    A systems administrator notices that a database server responds slowly even though network utilization is low. Further inspection shows memory usage is maxed out. What is the MOST likely issue?
      Question 3
      A VoIP administrator receives complaints about robotic-sounding audio during calls. Network analysis reveals inconsistent packet arrival times, even though packets are not being dropped. Which issue BEST describes this condition?
        Question 4
        A network technician analyzing file transfer performance sees repeated retransmissions in a packet capture. Which underlying issue is MOST likely responsible?
          Question 5
          A branch office reports slow access to cloud storage services. Testing reveals that the link is constantly operating near maximum capacity throughout the day. Which performance condition is being observed?
            Question 6
            A network administrator measures the time it takes for packets to travel from a client to a remote server and back. Which metric is being evaluated?
              Question 7
              A technician identifies excessive collisions on a network segment caused by inconsistent duplex settings between devices. What is the MOST likely result?
                Question 8
                A cloud engineer observes that application response times fluctuate unpredictably despite stable bandwidth and low packet loss. Which condition BEST explains this behavior?
                  Question 9
                  A network engineer compares the maximum theoretical capacity of a link to the actual data transfer achieved during testing. What is the difference between these two measurements called?
                    Question 10
                    A streaming service experiences buffering issues, and analysis shows packets are arriving in bursts rather than evenly spaced. Which issue is MOST likely causing this problem?
                      Answered: 0/10

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