CompTIA Network+ · N10-009
Objective 5.4: Given a scenario, troubleshoot general networking issues
Practice questions for Network+ objective 5.4, “Given a scenario, troubleshoot general networking issues.” Every question is original, written to the N10-009 exam objectives, and comes with a full explanation — answer them below to see instant grading.
This objective sits in Domain 5.0: Network Troubleshooting, which is about 18% of the exam — so mastering it moves your readiness score meaningfully.
1.Two devices on the same subnet are assigned IP address 192.168.1.50 — one by DHCP and one configured statically. What will likely occur?
2.A network technician observes that packets are routing in a circle: Router A sends to Router B, Router B sends to Router C, Router C sends back to Router A. The TTL value in the packets decreases with each hop until packets are dropped. What condition is this?
3.A technician captures network traffic and observes a large number of ARP requests flooding the network every few seconds. Which condition can cause this behavior?
4.A network technician notices that one switch port is continuously cycling between up and down states (flapping). What is the FIRST physical check the technician should perform?
5.A network switch is generating excessive broadcast traffic that is consuming all available bandwidth on the network segment. New device associations on that VLAN are failing. What condition is this?
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