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In a switched LAN network, what is the Spanning-Tree algorithm used for?

单选题
2022-02-23 00:06
A、It is used to provide a mechanism for routing updates in switched environments.
B、It is used to prevent routing loops in networks with redundant routes.
C、It is used to prevent switching loops in networks with redundant switched routes.
D、It is used to manage, the addition, deletion, and naming of VLANs across multiple switches.
E、It is used to segment a network into multiple collision domains.
F、None of the above.
G、All of the above are functions of STP.
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正确答案
C
试题解析
C 解析：Explanation:To avoid loops, all bridging devices, including switches, use STP. STP causes each interface on a bridging device to settle into a blocking state or a forwarding state. Blocking means that the interface cannot forward or receive data frames. Forwarding means that the interface can send and receive data frames. By having a correct subset of the interfaces blocked, a single currently active logical path will exist between each pair of LANs. STP resides at the data link layer, so it is used to prevent loops within a switched network. It is not used to prevent routing loops; that is the function of the mechanisms within a routing protocol.
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