Lekcje modułu (4/4)
Czytanie śladu DNS
Reading a DNS trace
A trace is a sequence of questions and replies. The resolver asks a server, reads the answer or referral, and decides which server to contact next. A referral is a signpost; it is not the requested host record.
Laboratorio guidato: Risoluzione iterativa: www.training.test.
Scenario interamente simulato: .test non è una delega della root pubblica.
Simulazione didattica locale: nessuna query DNS viene inviata.
For each step, write down the queried server, the question name and type, the response code, and any name servers or addresses returned. Stop when the responsible authority supplies the requested RRset, or when a clear error ends the lookup. Cached data can shorten the path.
For real cases, separate the requested data, the source that publishes it, and the component answering the query. Record assumptions instead of treating an observed answer as proof of its cause.
Check your understanding
Choose the best answer. This quiz runs locally and sends no DNS queries to real domains.
Which response completes the search for the requested record?