CompTIA
N10-005 · Question #400
N10-005 Question #400: Real Exam Question with Answer & Explanation
The correct answer is C: The workstation is configured with an incorrect IP address of the DNS server.. When a user can reach sites by IP but not by hostname, the workstation has an incorrect DNS server address, preventing hostname-to-IP resolution.
Question
A technician receives a work order that a user can no longer access any external websites. The user is the only one affected, but can still access websites by IP address. Which of the following is the MOST likely cause?
Options
- AThe workstation has been removed from the domain and needs to be re-added in directory services.
- BThe workstation is configured to use the IPv4 protocol instead of IPv6.
- CThe workstation is configured with an incorrect IP address of the DNS server.
- DThe workstation's DHCP IP address has expired and has assigned itself an APIPA address.
Explanation
When a user can reach sites by IP but not by hostname, the workstation has an incorrect DNS server address, preventing hostname-to-IP resolution.
Common mistakes.
- A. Domain membership controls authentication and group policy, not the ability to resolve public DNS names or access external websites by IP.
- B. Using IPv4 versus IPv6 does not inherently break DNS resolution; both protocol versions support DNS lookups.
- D. An APIPA address (169.254.x.x) would prevent the user from reaching any external resource including by IP address, since APIPA indicates no DHCP lease and no valid routable address.
Concept tested. DNS misconfiguration causing hostname resolution failure
Reference. https://learn.microsoft.com/en-us/windows-server/networking/dns/dns-top
Community Discussion
No community discussion yet for this question.