Cisco Certified Network Associate (CCNA) Practice Exam

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Study for the Cisco Certified Network Associate (CCNA) exam with our comprehensive quiz featuring multiple-choice questions and detailed explanations. Prepare effectively and enhance your understanding of networking concepts!

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What is the cost assigned to a 10 Mbps link in Spanning Tree Protocol?

The correct answer is: 100

In Spanning Tree Protocol (STP), the cost assigned to links is based on their bandwidth, influencing the way the protocol determines the best path for data to travel through the network. For a 10 Mbps link, the cost assigned is specifically set at 100. This cost metric is crucial for the protocol's operation, as STP uses it to prevent loops in the network by designating a single active path through the topology and placing redundant paths in a blocking state. The cost for slower links is higher, while faster links have lower costs. Therefore, a link with a bandwidth of 10 Mbps is assigned a cost of 100, which accurately reflects the relationship between link speed and STP cost calculations.