Trace DNS Answers
Compare DNS answers, record types, caching and resolver behavior using public test names.
Compare DNS answers, record types, caching and resolver behavior using public test names.
Prepare 20m · Build 110m · Verify 30m · Document 20m
Work only inside the folder created by Smartphone-Academy.py prepare dns-observation. Use the supplied samples or systems you personally administer.
Prepare the Termux workspace
Open Termux in the Academy root and prepare this lab with the local companion. It creates safe samples, notes and evidence files under your Termux account.
python Smartphone-Academy.py prepare dns-observationNo root. Use the supplied files and keep the workspace under $HOME.Practical mission
- Query a reserved or public documentation domain
- Compare answers from the system resolver and one explicit resolver
- Record time-to-live values and repeat after a short delay
- Explain why an answer is useful evidence but not proof of trust
A DNS worksheet covering A, AAAA, CNAME, MX and TXT observations.
Quality gate
Analyst reflection
Which result from “Explain why an answer is useful evidence but not proof of trust” would need more evidence before it could support an operational decision?
After checking the evidence, run python Smartphone-Academy.py complete dns-observation. Progress is stored locally in the Termux home directory.