多项选择题

Which two statements about the use of VLANs to segment a network are true? （）

A.VLANs increase the size of collision domains.
B.VLANs allow logical grouping of users by function.
C.VLANs simplify switch administration.
D.VLANs enhance network security.

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单项选择题

A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffiC.What is the effect of adding switch ports to a new VLAN on the switch?（）

A.More collision domains will be created.
B.IP address utilization will be more efficient.
C.More bandwidth will be required than was needed previously.
D.An additional broadcast domain will be created.

单项选择题

Which switch would STP choose to become the root bridge in the selection process?（）

A.32768：11-22-33-44-55-66
B.32768：22-33-44-55-66-77
C.32769：11-22-33-44-55-65
D.32769：22-33-44-55-66-78

单项选择题

A default Frame Relay WAN is classified as what type of physical network？（）

A.point-to-point
B.broadcast multi-access
C.nonbroadcast multi-access
D.nonbroadcast multipoint.broadcast point-to-multipoint