Tuning DNS timeout and retries | LinuC Level 1 102 Exam original practice question

1.07.4Basic

For a glibc resolver, wait two seconds per DNS attempt and try three times.

Choose the options line for /etc/resolv.conf.

Which line is appropriate?

Hint 1: Focus on resolver scope

Separate resolver directives, DNS record types, NSS sources, and query timing before comparing the settings or commands.

Hint 2: Key terms

Review the short definitions of resolver settings, DNS records, NSS sources, and query timing involved.

Detailed explanation

Incorrecttimeout 2 attempts 3

Incorrect. It lacks the options directive and colon syntax.

Incorrectnameserver timeout:2 attempts:3

Incorrect. nameserver is for resolver addresses.

Correctoptions timeout:2 attempts:3

Correct. It sets the requested timeout and attempts values.

Incorrectsearch timeout=2 attempts=3

Incorrect. search is for domain suffixes and does not use this syntax.

An example you can run in a temporary verification environment.

printf '%s
' 'options timeout:2 attempts:3' | awk '{print $1, $2, $3}'

options timeout:2 attempts:3

Foundation review

A group of directives that controls DNS query behavior.

The period a resolver waits for a response before retrying or failing.

The number of retries made when a DNS response is not received.

Question IDKL-102-1005

EnvironmentPOSIX awk / 一時標準入力のみ

Last technical review2026-08-13

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