hardMultiple ChoiceObjective-mapped
FC0-U71 Practice Question: A technician is troubleshooting a workstation…
A technician is troubleshooting a workstation that cannot connect to a server at 192.168.1.100. The workstation's IP configuration shows: IP: 192.168.2.50, Subnet: 255.255.255.0, Gateway: 192.168.2.1. Which of the following is the MOST likely cause of the connectivity issue?
⚠ Common exam trap
A common mix-up: candidates assume any connectivity failure is due to an incorrect default gateway, but the gateway is actually correct for the workstation's subnet; the real issue is that the two devices are on different subnets with no router to bridge them.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Workstation and server are on different subnets with no routing
The workstation's IP address (192.168.2.50) and the server's IP address (192.168.1.100) belong to different subnets (192.168.2.0/24 and 192.168.1.0/24, respectively). Without a router configured to forward traffic between these subnets, the workstation cannot reach the server, even though the default gateway (192.168.2.1) is correct for its own subnet.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Incorrect default gateway
Why it's wrong here
The gateway is correct for the workstation's subnet.
- ✗
Incorrect subnet mask
Why it's wrong here
The subnet mask 255.255.255.0 is standard for a /24 network.
- ✗
Duplicate IP address on the network
Why it's wrong here
Duplicate IP would cause intermittent issues, not a consistent inability to reach one server.
- ✓
Workstation and server are on different subnets with no routing
Why this is correct
Without a router, devices on different subnets cannot communicate.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This FC0-U71 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FC0-U71 exam.