100-140 Question 375
Select 3A user reports that they are unable to access the company’s internal file server. After performing basic connectivity checks, you suspect there might be an issue with the DNS configuration. Which of the following troubleshooting actions should you take to research this issue and update internal documentation with your findings?
- A
Use the 'nslookup' command to verify the DNS resolution for the file server's hostname.
- B
Ping the file server's IP address to confirm network connectivity.
- C
Document the user's operating system version in the internal knowledge base without performing further checks.
- D
Check the company’s internal DNS server logs for errors or misconfigurations.
- E
Update the internal documentation with details about the server’s DNS records after resolving the issue.
Show answer and explanation
Correct answers: A, D, E
Explanation
Effective troubleshooting of a DNS-related issue involves verifying DNS resolution using tools like 'nslookup', analyzing DNS server logs for errors, and updating internal documentation to support future troubleshooting efforts. This structured approach ensures the root cause is addressed and the knowledge base is enriched for similar incidents.
- A. Correct.
The 'nslookup' command is a reliable troubleshooting tool to verify if the DNS resolution is working as expected for the file server. This helps pinpoint DNS issues.
- B. Incorrect.
While pinging the file server's IP address can confirm network connectivity, it does not directly address potential DNS configuration issues, making it less relevant to this scenario.
- C. Incorrect.
Documenting the user's operating system version without further investigation is not a practical troubleshooting step in this DNS-related scenario.
- D. Correct.
Checking the internal DNS server logs can help identify errors or misconfigurations that may be causing the DNS resolution issue.
- E. Correct.
After resolving the issue, updating internal documentation with details about the server’s DNS records ensures that future incidents can be resolved more efficiently.