Which two benefits are provided by using a hierarchical addressing network addressing scheme? （）

多项选择题What are three advantages of VLANs? （）

A.VLANs establish broadcast domains in switched networks.
B.VLANs utilize packet filtering to enhance network security.
C.VLANs provide a method of conserving IP addresses in large networks.
D.VLANs provide a low-latency internetworking alternative to routed networks.
E.VLANs allow access to network services based on department, not physical location.
F.VLANs can greatly simplify adding, moving, or changing hosts on the network.

单项选择题Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?（）

A.the switch with the lowest MAC address
B.the switch with the higest MAC address
C.the switch witch the higest IP address
D.the switch with the lowest IP address

多项选择题Refer to the exhibit.Which two statements are true of the interfaces on switch1?（）

A.AhubisconnecteddirectlytoFastEthernet0/5
B.FastEthernet0/1isconfiguredasatrunklink.
C.FastEthernet0/5hasstaticallyassignedmacaddress
D.InterfaceFastEthernet0/2hasbeendisable.
E.MultipledevicesareconnecteddirectlytoFastEthernet0/1.
F.FastEthernet0/1isconnectedtoahostwithmultiplenetworkinterfacecards.

多项选择题Which two of these statements regarding RSTP are correct? （）

A.RSTP cannot operate with PVST+.
B.RSTP defines new port roles.
C.RSTP defines no new port states.
D.RSTP is a proprietary implementation of IEEE 802.1D STP.
E.RSTP is compatible with the original IEEE 802.1D STP.

多项选择题What are the possible trunking modes for a switch port? （）

A.transparent
B.auto
C.on
D.desirable
E.client
F.forwarding