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FC0-U71 Practice Question: That they can access websites by IP address but…
Exhibit
Refer to the exhibit. C:\> ipconfig Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : example.com IPv4 Address. . . . . . . . . . . : 192.168.1.50 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.254 DNS Server . . . . . . . . . . . . : 192.168.1.100
A user reports that they can access websites by IP address but not by domain name. Based on the exhibit, which of the following is the MOST likely cause?
⚠ Common exam trap
It's easy for candidates to confuse DNS failure with gateway or routing issues, but the ability to access sites by IP address proves that routing and gateway settings are correct, isolating the problem to name resolution.
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
✓
Incorrect or unreachable DNS server
The user can access websites by IP address but not by domain name, which indicates that IP routing and connectivity are functioning correctly. The failure to resolve domain names points directly to a DNS issue, such as an incorrect or unreachable DNS server. DNS translates human-readable domain names into IP addresses; without a working DNS server, name resolution fails while direct IP access remains unaffected.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Duplicate IP address on the network
Why it's wrong here
Duplicate IP would cause intermittent issues, not just name resolution failure.
- ✗
Incorrect default gateway
Why it's wrong here
The default gateway is provided and likely correct.
- ✗
Incorrect subnet mask
Why it's wrong here
255.255.255.0 is appropriate for a /24 network.
- ✓
Incorrect or unreachable DNS server
Why this is correct
DNS is needed for name resolution; if it's down or wrong, domains won't resolve.
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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.