Which of the following environment variables can be defined in locale.conf? (Choose two.)

Question

Options

• ALC_ALL
• BLC_USERNAME
• CLC_UTF8
• DLC_GEOGRAPHY
• ELC_TIME

• A
  74% (17)
• B
  9% (2)
• C
  4% (1)
• D
  13% (3)

Explanation

LC_ALL and LC_TIME are both valid locale categories recognized by the POSIX locale system and can be set in /etc/locale.conf (or ~/.config/locale.conf). LC_ALL is a powerful override that forces all locale categories to a single value, and LC_TIME controls date and time formatting - both are standard, documented locale environment variables used by the C library and systemd's locale system.

The three distractors are simply invented names: LC_USERNAME (B) is not a locale category - usernames aren't a formatting concern; LC_UTF8 (C) doesn't exist - character encoding is controlled via the locale name itself (e.g., en_US.UTF-8) in variables like LANG or LC_CTYPE, not a separate variable; LC_GEOGRAPHY (D) is also fabricated - no such standard category exists.

Memory tip: Every real LC_* variable maps to a concrete formatting category - time, numbers, monetary values, messages, collation, paper size, etc. If the suffix sounds like a user attribute (USERNAME) or a technology (UTF8) or a vague concept (GEOGRAPHY) rather than a formatting domain, it's fake.

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