Querying an A record with dig | LPIC-1 102-500 Exam original practice question

109.4Standard

Use dig to query the configured resolver for the IPv4 address record of app.example.test.

Which command is appropriate?

Hint 1: Focus on the requirement

Identify what must change and what must remain unchanged. Then choose the command whose scope matches that requirement.

Hint 2: Check each command's role

Separate commands that display information, change state, remove data, or affect a child process.

dig app.example.test A: Correct. It queries the A record for the name.
dig app.example.test MX: Incorrect. MX queries mail exchanger records.
dig A app.example.test PTR: Incorrect. It adds an unnecessary PTR and places the query form incorrectly.
dig --hosts app.example.test: Incorrect. dig does not query only /etc/hosts with a --hosts option.

Detailed explanation

Correctdig app.example.test A

Correct. It queries the A record for the name.

Incorrectdig app.example.test MX

Incorrect. MX queries mail exchanger records.

Incorrectdig A app.example.test PTR

Incorrect. It adds an unnecessary PTR and places the query form incorrectly.

Incorrectdig --hosts app.example.test

Incorrect. dig does not query only /etc/hosts with a --hosts option.

An example you can run in a temporary verification environment.

printf '%s
' 'dig app.example.test A -> DNS type A query'

dig app.example.test A -> DNS type A query

Foundation review

Check whether the command acts on the current shell, a new process, an existing process, or a file.

Use the supplied command and compare the output with the expected result.

Question IDKP-109-835

Environmentdig構文の表示のみ（DNS通信なし）

Last technical review2026-08-13