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    Exam 4: Cisco Certified Network Associate (CCNA)
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    How Does STP Prevent Forwarding Loops at OSI Layer 2
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How Does STP Prevent Forwarding Loops at OSI Layer 2

Question 223

Question 223

Multiple Choice

How does STP prevent forwarding loops at OSI Layer 2?


A) TTL
B) MAC address forwarding
C) Collision avoidance
D) Port blocking

Correct Answer:

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