1.LAB

　　Drag and drop question. Drag the items to the proper locations.

　　Correct Answers:

　　2.Which two statements about the various implementations of STP are true? (Choose two.)

　　A:Common Spanning Tree maintains a separate spanning-tree instance for each VLAN configured in the network.

　　B:The Spanning Tree Protocol (STP) is an evolution of the IEEE 802.1w standard.

　　C:Per-VLAN Spanning Tree (PVST) supports 802.1Q trunking.

　　D:Per-VLAN Spanning Tree Plus(PVST+) is an enhancement to 802.1Q specification and is supported only on Cisco devices.

　　E:Rapid Spanning Tree Protocol (RSTP) includes features equivalent to Cisco PortFast, UplinkFast, and BackboneFast for faster network reconvergence.

　　F:Multiple Spanning Tree (MST) assumes one spanning-tree instance for the entire Layer 2 network, regardless of the multiple number of VLANs.

　　Correct Answers:　D, E

　　3.How does VTP pruning enhance network bandwidth?

　　A: by restricting unicast traffic to across VTP domains

　　B: by reducing unnecessary flooding of traffic to inactive VLANs

　　C: by limiting the spreading of VLAN information