单项选择题

Which configuration option will cause the link between two Cisco 3600 Series Multiservice Platforms to become a functional trunk？（）

A.switchport dynamic auto switchport dynamic auto
B.switchport access vlan 10 switchport mode dynamic desireable
C.switchport mode trunk switchport nonegotiate
D.Leave both ports with the default trunk settings

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单项选择题

What is the effect of applying the switchport trunk encapsulation dot1q command to a port on a Cisco Catalyst switch？（）

A.By default， native VLAN packets going out this port will be tagged.
B.Without an encapsulation command， 802.1Q will be the default encapsulation if DTP fails to negotiate a trunking protocol.
C.The interface will support the reception of tagged and untagged traffic.
D.If the device connected to this port is not 802.1Q-enabled， it will not be able to handle 802.1Q packets.

单项选择题

Which statement correctly describes the Cisco implementation of RSTP？（）

A.PortFast， UplinkFast， and BackboneFast specific configurations are ignored in Rapid PVST mode.
B.RSTP is enabled globally and uses existing STP configuration.
C.Root and alternative ports transition immediately to the forwarding state.
D.Convergence is improved by using sub-second timers for the blocking， listening， learning， and forwarding port states.

多项选择题

Which two statements correctly describe UDLD？（）

A.Unidirectional link detection is achieved through monitoring STP BPDUs.
B.It is recommended that it be enabled globally rather than on an individual port.
C.When an error is detected， normal mode will disable a port.
D.It is recommended that it be enabled in normal mode.
E.It is recommended that it be used with the loop guard feature.