单选题Refer to the exhibit. The command spanning-tree guard root is configured on interface Gi0/0 on both switch S2 and S5. The global configuration command spanning-tree uplinkfast has been configured on both switch S2 and S5. The link between switch S4 and S5 fails. Will Host A be able to reach Host B？（）A Yes. Traffic can pass either from switch S6 to S3 to S2 to S1， or， from switch S6 to S5 to S2 to S1.B No. Traffic will pass from switch S6 to S5 and dead-end at interface Gi 0/0.C No. Traffic will loop back and forth between switch S5 and S2.D Yes. Traffic will pass from switch S6 to S3 to S2 to S1.E No. Traffic will either pass from switch S6 to S5 and dead-end， or traffic will pass from switch S6 to S3 to S2 and dead-end.
单选题
Refer to the exhibit. The command spanning-tree guard root is configured on interface Gi0/0 on both switch S2 and S5. The global configuration command spanning-tree uplinkfast has been configured on both switch S2 and S5. The link between switch S4 and S5 fails. Will Host A be able to reach Host B？（）
A
Yes. Traffic can pass either from switch S6 to S3 to S2 to S1， or， from switch S6 to S5 to S2 to S1.
B
No. Traffic will pass from switch S6 to S5 and dead-end at interface Gi 0/0.
C
No. Traffic will loop back and forth between switch S5 and S2.
D
Yes. Traffic will pass from switch S6 to S3 to S2 to S1.
E
No. Traffic will either pass from switch S6 to S5 and dead-end， or traffic will pass from switch S6 to S3 to S2 and dead-end.
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