单选题What is the purpose of Spanning Tree Protocol?（）Ato prevent routing loopsBto create a default routeCto provide multiple gateways for hostsDto maintain a loop-free Layer 2 network topologyEto enhance the functions of SNMP
单选题
What is the purpose of Spanning Tree Protocol?（）
A
to prevent routing loops
B
to create a default route
C
to provide multiple gateways for hosts
D
to maintain a loop-free Layer 2 network topology
E
to enhance the functions of SNMP
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What is the purpose of the Spanning Tree Protocol (STP)?A．To prevent routing loopsB．To create a default routeC．To provide multiple gateways for hostsD．To maintain a loop-free Layer 2 network topologyE．To enhance the functions of SNMP
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问答题What is the next state of initial in spanning-tree protocol？