多項選擇題Which two are natively included by the IEEE 802.1w standard?()

A.instances can control a selection of VLANs
B.load balancing
C.fast transition to forwarding state
D.backbone,uplink,and portfast (or equivalent)
E.root,loop,and BPDU guard (or equivalent)


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1.多項選擇題Which two attributes need to match for two switches to become members of the same MST region?()

A.the table of 4096 elements that map the respective VLAN to STP instance number
B.VTP version
C.configuration revision number
D.native VLAN ID

3.單項選擇題Which configuration would make an IP SLA probe use a precedence value of 5?()

A.ip sla 1 icmp-echo 1.1.1.1 tos 160
B.ip sla 1 icmp-echo 1.1.1.1 tos 20
C.ip sla 1 icmp-echo 1.1.1.1 precedence 5
D.ip sla 1 icmp-echo 1.1.1.1 dscp 20

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