Refer to the exhibit. At the end of an RSTP election process, which access layer switch port will assume the discarding role?()A.Switch3, port fa0/1B.Switch3, port fa0/12C.Switch4, port fa0/11D.Switch4, port fa0/2E.Switch3, port Gi0/1F.Switch3, port Gi0/2

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When creating a role in a Cisco Nexus 7000 Series Switch， rules are used to define the type of operations that a role will allow the user to perform.  Which two of these parameters cannot be applied as a rule？ （） 

• A、 port-profile
• B、 command
• C、 access-list
• D、 feature-group
• E、 OID

第5题：

Which two of the following statements describe a routed switch port on a multilayer switch？（）

• A、Layer 2 switching and Layer 3 routing are mutually supported.
• B、The port will not be associated with any VLAN.
• C、The routed switch port supports VLAN subinterfaces.
• D、The routed switch port is used when a switch has only one port per VLAN or subnet.
• E、The routed switch port ensures that STP remains in the forwarding state.

第6题：

Refer to the exhibit. The output that is shown is generated at a switch. Which three of these statements are true? （）

• A、All ports will be in a state of discarding, learning, or forwarding.
• B、Thirty VLANs have been configured on this switch.
• C、The bridge priority is lower than the default value for spanning tree.
• D、All interfaces that are shown are on shared media.
• E、All designated ports are in a forwarding state.
• F、The switch must be the root bridge for all VLANs on this switch.

第7题：

Which three statements about RSTP are true？（）

• A、RSTP significantly reduces topology reconverging time after a link failure.
• B、RSTP expends the STP port roles by adding the alternate and backup roles.
• C、RSTP port states are blocking，discarding，learing，or forwarding.
• D、RSTP also uses the STP proprsal-agreement sequence.
• E、RSTP use the same timer-baseed process as STP on point-to-point links.
• F、RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.

第8题：

Which statement is correct about RSTP port roles？（）

• A、The designated port is the switch port on every nonroot bridge that is the chosen path to theroot bridge. There can be only one designated port on every switch. The designated portassumes the forwarding state in a stable active topology. All switches connected to a given segment listen to all BPDUs and determine the switch that will be the root switch for a particular segment.
• B、The disabled port is an additional switch port on the designated switch with a redundant link to the segment for which the switch is designated. A disabled port has a higher port ID than the disabled port on the designated switch. The disabled port assumes the discarding state in astable active topology.
• C、The backup port is a switch port that offers an alternate path toward the root bridge. The backup port assumes a discarding state in a stable， active topology. The backup port will be present on nondesignated switches and will make a transition to a designated port if the current designated path fails.
• D、The root port is the switch port on every nonroot bridge that is the chosen path to the root bridge. There can be only one root port on every switch. The root port assumes the forwarding state in a stable active topology.

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第15题：

Which set of commands is recommended to prevent the use of a hub in the access layer?（）

• A、switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1
• B、switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1
• C、switch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1
• D、switch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1

第16题：

During voice implementation，  which two required items are configured at an access layer switch connected to an IP phone to provide VoIP communication？（）

• A、allowed codecs
• B、native VLAN
• C、auxiliary VLAN
• D、Cisco Unified Communications Manager IP address
• E、RSTP

第17题：

Refer to the exhibit. The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem?（）

• A、Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.
• B、Ensure that cables A and B are straight-through cables.
• C、Ensure cable A is plugged into a trunk port.
• D、Ensure the switch has power.
• E、Reboot all of the devices.
• F、Reseat all cables.

第18题：

Which three statements about RSTP aretrue?（）

• A、RSTP significantly reduces topology reconverging time after a link failure.
• B、RSTP expends the STP port roles by adding the alternate and backup roles.
• C、RSTP portatates are blocking,discarding,learing,orforwarding.
• D、RSTP also uses the STP proprsal-agreement sequence.
• E、RSTP use the same timer-baseed process as STP on point-to-point links.
• F、RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.

第19题：

Which command alone will disable trunking on a Layer 2 switch port？（）

• A、no switchport trunk native vlan vlan-id
• B、switchport nonegotiate
• C、no switchport mode dynamic desirable
• D、switchport mode access

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