A subset of a network that includes all the routers but contains no loops is called ________

A. Spanning tree

B. Spider structure
C. Spider tree
D. Special tree

Explanation: Spanning tree protocol (STP) is a network protocol that creates a loop free logical topology for ethernet networks. It is a layer 2 protocol that runs on bridges and switches. The main purpose of STP is to ensure that you do not create loops when you have redundant paths in your network.

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