单项选择题

In 802.1s， how is the VLAN to instance mapping represented in the BPDU？（）

A.The VLAN to instance mapping is a normal 16-byte field in the MST BPDU.
B.The VLAN to instance mapping is a normal 12-byte field in the MST BPDU.
C.The VLAN to instance mapping is a 16-byte MD5 signature field in the MST BPDU.
D.The VLAN to instance mapping is a 12-byte MD5 signature field in the MST BPDU.

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多项选择题

Which three options are considered in the spanning-tree decision process？（）

A.lowest root bridge ID
B.lowest path cost to root bridge
C.lowest sender bridge ID
D.highest port ID
E.highest root bridge ID
F.highest path cost to root bridge

多项选择题

Which three options are features of VTP version 3？（）

A.VTPv3 supports 8K VLANs.
B.VTPv3 supports private VLAN mapping.
C.VTPv3 allows for domain discovery.
D.VTPv3 uses a primary server concept to avoid configuration revision issues.
E.VTPv3 is not compatible with VTPv1 or VTPv2.
F.VTPv3 has a hidden password option.

单项选择题

Spanning Tree Protocol calculates path cost based on which of these？（）

A. interface bandwidth
B. interface delay
C. interface bandwidth and delay
D. hop count
E. bridge priority