What is the purpose of the Spanning Tree Protocol (STP)?

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问题 What is the purpose of the Spanning Tree Protocol (STP)?

选项 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

答案D

解析 Explanation:
STP’s main task is to stop network loops from occurring on your Layer 2 network (bridges or switches). It vigilantly monitors the network to find all links, making sure that no loops occur by shutting down any redundant ones. STP uses the spanning-tree algorithm (STA) to first create a topology database, then search out and destroy redundant links. With STP running, frames will only be forwarded on the premium, STP-picked links.

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What is the purpose of the Spanning Tree Protocol (STP)?

思科640802

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