Which of the protocols operates at Layer 2 of the OSI model, and is used to maintain a loop-free network?

Which of the protocols operates at Layer 2 of the OSI model, and is used to maintain a loop-free network?

Which of the protocols operates at Layer 2 of the OSI model, and is used to maintain a loop-free network?




A. VTP
B. IGRP
C. RIP
D. STP



Answer: D


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