PSC(Port State Control)检查是()
A、世界各地的港口国当局对抵港的外籍船舶实施的以船舶和人员安全为对象的专门检查
B、世界各地的港口国当局对抵港的外籍船舶实施的以防止海洋污染及船舶技术状况为对象的专门检查
C、A+B
D、以上都不对
A、世界各地的港口国当局对抵港的外籍船舶实施的以船舶和人员安全为对象的专门检查
B、世界各地的港口国当局对抵港的外籍船舶实施的以防止海洋污染及船舶技术状况为对象的专门检查
C、A+B
D、以上都不对
A、 an edge port that transitions to the forwarding state B、 a non-edge port that transitions to the blocking state C、 a non-edge port that transitions to the forwarding state D、 an edge port that transitions to the blocking state E、 any port that transitions to the blocking state F、 any port that transitions to the forwarding state
A、The port must be put into forwarding state manually after root-inconsistent state has beencorrected B、A Root Guard port receiving superior BPDU goes into a root-inconsistent state C、A Root Guard port receiving inferior BPDU goes into a root-inconsistent state D、While the port is in a root-inconsistent state no user data is sent across that port E、The port returns to a forwarding state if inferior BPDUs stop F、It should be applied to all switch ports
A、A.a root port being transitioned to the blocking state B、B.a port being assigned as a root port C、C.a port being assigned as an alternate port D、D.a root port being transitioned to the forwarding state
A、The port immediately transitions to the Forwarding state. B、The switch generates a Topology Change Notification (TCN) BPDU. C、The port immediately transitions to the err-disable state. D、The port becomes a normal STP switch port.