Which of the following troubleshooting targets is considered to be a Layer 2 issue?(Choose allthat apply.)()
A. Spanning Tree Protocol
B. Cabling
C. Frame forwarding
D. Packet forwarding
EtherChannel
F. Routing protocol
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船舶中垂的特征是()。
A. 船中部上拱,上甲板受压,船底受拉
B. 船中部上拱,上甲板受拉,船底受压
C. 船中部下垂,上甲板受压,船底受拉
D. 船中部下垂,上甲板受拉,船底受压