Exam 202-450 Topic 3 Question 60 Discussion

Explanation
The dig tool is a command-line utility that can query DNS servers and display the results in a human-readable format. The output of dig includes the following sections:
The header section, which shows the query parameters and response status.
The question section, which repeats the query name and type.
The answer section, which shows the resource records that match the query.
The authority section, which shows the authoritative name servers for the queried domain.
The additional section, which shows any additional records that may be useful.
The output format of dig is similar to the image provided in the question, which shows the following information:
The query was for the A record of www.lpi.org.
The response was received from the DNS server 8.8.8.8.
The response had an opcode of QUERY, a status of NOERROR, and a flags of QR RD RA.
The response had 1 question, 1 answer, 0 authority, and 0 additional records.
The answer record was www.lpi.org. 300 IN A 104.21.23.156, which means that the IP address of www.lpi.org is 104.21.23.156 and has a time-to-live of 300 seconds.
References: dig manual page, dig tutorial