Practice Quiz

Advanced Networking Administrator Test Prep

Category - CCNA

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David has connected two switches using two crossover cables for redundancy. STP is disabled. Which of the following is most likely to happen between the switches?
  1. The switched network will have broadcast storms.
  2. The switches load balance between the two available links.
  3. The routing tables on the switches will not get updated.
  4. The MAC forward/filter table on the switches will not get updated.
Explanation
Answer: A - If STP is disabled between two switches that are connected using 2 cables for redundancy, broadcast storms will occur on the switched network.

Key Takeaway: A broadcast storm is a situation in which messages are broadcast on a network and each message prompts a receiving node to respond by broadcasting its own messages on the network. This in turn prompts further responses and so on. This snowball has a negative impact on network performance. Spanning Tree Protocol is a protocol that ensures a loop-free topology for a bridged LAN. So if two switches are interconnected without an STP, it forms a loop and broadcast storms occur.
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