单项选择题

Refer to the exhibit. Which switching feature is being tested？（）

A.loop guard
B.PortFast
C.root guard
D.BDPU guard

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单项选择题

Refer to the exhibit. Voice traffic is marked precedence 5. How much bandwidth is allocated for voice traffic during periods of congestion？（）

A.a minimum of 48 kb/s
B.a maximum of 48 kb/s
C.a minimum of 48% of the available bandwidth
D.a maximum of 48% of the available bandwidth

多项选择题

InLayer2topologies，spanning-treefailurescancauseloopsinthenetwork.Theseunblockedloopscancausenetworkfailuresbecauseofexcessivetraffic.WhichtwoCatalyst6500featurescanbeusedtolimitexcessivetrafficduringspanning-treeloopconditions？（）

A.loop guard
B.storm control
C.storm suppression
D.broadcast suppression
E.BPDU guard

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