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Cisco Certified Network Associate (CCNA) · Cisco
Select one answer.
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B is correct
https://community.cisco.com/t5/blogs-routing-y-switching/caracter%C3%ADsticas-avanzadas-de-spanningtree-portfast-bpdu-guard-y/ba-p/3104851 PortFast permite que el puerto entre en un estado de Forwarding inmediatamente, pasando por alto los estados Listening y Learning.
In a spine-and-leaf topology, each leaf switch is connected to every spine switch, which is option B. This design provides high bandwidth, redundancy, and low latency between the end hosts connected to the leaf switches and enables east-west traffic to traverse the network fabric in a non-blocking manner. The spine switches act as a high-speed backplane, while the leaf switches provide access ports to end hosts.