XK0-006 Troubleshooting Practice Question
A technician needs to check the DNS A record for example.com using a specific DNS server at 8.8.8.8. Which command accomplishes this?
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
✓
dig example.com @8.8.8.8 A
dig @8.8.8.8 example.com A queries the specified DNS server for the A record.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
host -a example.com 8.8.8.8
Why it's wrong here
host is another tool, but not the most common on Linux+.
- ✗
dig -x 8.8.8.8 example.com
Why it's wrong here
-x is for reverse lookup; incorrect syntax.
- ✓
dig example.com @8.8.8.8 A
Why this is correct
Correct syntax: dig @server name type.
- ✗
nslookup example.com 8.8.8.8
Why it's wrong here
nslookup syntax is 'nslookup name server' but it's deprecated; dig is preferred.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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