You are the network administrator at Certkiller . You want to configure VLAN 3 to be used for voice in CatOS. Which command should you use?

A.
set voice vlan 3 [mod/port]

B.
set auxiliaryvlan 3 [mod/port]

C.
set port voice vlan 3 [mod/port]

D.
set port auxiliaryvlan 3 [mod/port]

E.
set port auxiliaryvlan [mod/port] 3

Explanation:
D is not correct.
setport auxiliaryvlan
To configure the auxiliary VLAN ports, use the set port auxiliaryvlan command. set port auxiliaryvlan mod[/port] {vlan | untagged | dot1p | none} [cdpverify {enable | disable}]
Syntax Description

Defaults
The default setting is none.
Command Types
Switch command.
Command Modes
Privileged.
Usage Guidelines
If you do not specify a port, all ports are selected.The vlan option specifies that the connected device sends packets that are tagged with a specific VLAN. If you enter the none option, voice information will not be sent or received. Dynamic VLAN support for voice VLAN identifier (VVID) includes these restrictions to the following multiple VLAN access port (MVAP) configuration on the switch port:
You can configure any VVID on a dynamic port including dot1p and untagged, except when the VVID is equal to dot1p or untagged. If this is the case, you must configure VMPS with the MAC address of the IP phone. When you configure the VVID as dot1p or untagged on a dynamic port, this warning message is displayed:
VMPS should be configured with the IP phone mac’s. For dynamic ports, the auxiliary VLAN ID cannot be the same as the native VLAN ID assigned by VMPS for the dynamic port.
You cannot configure trunk ports as dynamic ports, but an MVAP can be configured as a dynamic port.
The presence of an IP phone is determined through CDP packet exchange between the switch and the phone. This detection method is used for both inline-powered IP phones and wall-powered IP phones.
If the auxiliary VLAN ID equals the port-VLAN ID or when the auxiliary VLAN ID is configured as none, dot1p, or untagged, this feature cannot be applied to the port. If any command entry results in the auxiliary VLAN ID equaling the port-VLAN ID, the feature is disabled and the following warning message is displayed:
cdpverify feature on port mod/port is disabled.Examples This example shows how to set the auxiliary VLAN port to untagged:
Console> (enable) set port auxiliaryvlan 5/7 untaggedPort 5/7 allows the connected device send and receive untagged packets andwithout 802.1p priority.Console> (enable) This example shows how to set the auxiliary VLAN port to dot1p:
Console> (enable) set port auxiliaryvlan 5/9 dot1pPort 5/9 allows the connected device send and receive packets with 802.1p priority.Console> (enable)This example shows how to set the auxiliary VLAN port to none:
Console> (enable) set port auxiliaryvlan 5/12 nonePort 5/12 will not allow sending CDP packets with AuxiliaryVLAN information.Console> (enable)This example shows how to set the auxiliary VLAN port to a specific module, port, and VLAN:
Console> (enable) set port auxiliaryvlan 2/1-3 222Auxiliaryvlan222 configuration successful.AuxiliaryVlan AuxVlanStatus Mod/Ports————- ————- ————————-222 active 1/2,2/1-3Console> (enable) http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_8_3/cmd_ref/set_po_r.htm#wp1235003