Post — CompTIA A+ Core 1 (220-1101) Practice Questions
POST (Power-On Self-Test) is the diagnostic routine executed by the BIOS or UEFI immediately after a computer is powered on, before the operating system begins loading. It checks that essential hardware components such as the CPU, RAM, and storage controllers are present and functioning, and signals errors through beep codes or on-screen messages if problems are found. The 220-1101 exam tests your ability to interpret POST beep codes and error messages to identify which hardware component has failed during the boot process.
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What does BIOS stand for?
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What is the purpose of a POST (Power-On Self-Test)?
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More post questions in the full bank
- Which of the following is a function of the POST (Power-On Self-Test)? Unlock answer & explanation →
- What does POST stand for? Unlock answer & explanation →
- What is the primary purpose of the BIOS/UEFI in a computer system? Unlock answer & explanation →