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思科认证考试

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Please match the Cisco STP enahancement term to its definition.() (1) BPDU guard (2) PortFast (3) BackboneFast (4) Loop guard (5) Root guard (a) shuts down a port that receives a BPDU when enabled (b) cuts convergence time by mas-age for indirect failure (c) prevents the aliernate or root port from being designated in absence of BPDUs (d )causes Layer 2 LAN interface access port to immediately enter the forwarding state (e) helps prevent bridging loops due to jni-directional link failures on point-to-point links

  • A、(a)-(1);(b)-(2);(c)-(4);(d)-(5);(e)-(3)
  • B、(a)-(4);(b)-(3);(c)-(2);(d)-(5);(e)-(1)
  • C、(a)-(3);(b)-(2);(c)-(4);(d)-(5);(e)-(1)
  • D、(a)-(1);(b)-(3);(c)-(4);(d)-(2);(e)-(4)
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