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Which technologies listed below help prevent network loops in a
switched (bridged) environment?
A.) Store-and-Forward
B.) IEEE 802.1d
C.) Diikjstra Algorithm
D.) Cut-Through
E.) Spanning Tree Protocol
F.) Routing
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Answer: B E
The Spanning Tree Protocol (STP) eliminates loops by
disabling the
port(s) that are causing the bridging loop. This is also
called putting
a port into 'blocking' mode. The industry standard for STP
is IEEE 802.1d
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CCNA 
