Question:
What is the first action in the boot sequence when a switch is powered on?
- load the default Cisco IOS software
- load boot loader software
- low-level CPU initialization
- load a power-on self-test program
Explanation: The first action to take place when a switch is powered on is the POST or power-on self-test. POST performs tests on the CPU, memory, and flash in preparation for loading the boot loader.
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