During the implementation of Spanning Tree Protocol, all switches are rebooted by the network administrator.
What is the first step of the spanning-tree election process?
A. All the switches send out BPDUs advertising themselves as the root bridge.
B. Each switch determines the best path to forward traffic.
C. Each switch determines what port to block to prevent a loop from occurring.
D. Each switch with a lower root ID than its neighbor will not send BPDUs.
