Multiple choice

PBX stands for

  1. Primary Branch Exchange

  2. Private Branch Exchange

  3. Private Brass Exchange

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

PBX stands for Private Branch Exchange, which is a telephone switching system used within organizations to handle internal and external calls. Option A incorrectly uses 'Primary' instead of 'Private'. Option C incorrectly uses 'Brass' instead of 'Branch'.

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