Which two behaviors describe PortFast? (Choose two.)
Choose an answer
Tap an option to check your answer.
Correct answer: Ports transition directly from the blocking state to the forwarding state., Ports operate normally without receiving BPDUs..
Why this is the answer
PortFast is designed for end-device ports, allowing them to bypass the normal Spanning Tree Protocol (STP) listening and learning states and transition directly from blocking to forwarding. This speeds up device connectivity. These ports are expected to connect to end devices (like PCs), not other switches, so they operate normally without receiving BPDUs. If a BPDU is received on a PortFast-enabled port, it indicates a potential loop, and the port will typically shut down (if BPDU Guard is enabled) or revert to normal STP operation. "Convergence is fast after a link failure" is a benefit of RSTP, not specifically PortFast. "STP loops are mitigated for uplinks to other switches" is incorrect; PortFast is for access ports, and using it on inter-switch links can create loops. "Ports that connect to the backbone automatically detect indirect link failures" is not a function of PortFast.
Pass your exam — without the endless answer hunt
Get every verified question and explanation for this exam in one place, and save hours of prep. 1,000+ certifications · 20+ languages · free to start.
Pass your exam faster → No card needed