A.jitterB.delayC.PoED.bandwidthE.packet lossWhichtwonet……

多项选择题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

多项选择题A network is deployed using best practices of the enterprise campus network model， including users with desktop computers connected via IP phones. Given that all components are QoS-capable，  where are the two optimal locations for trust boundaries to be configured by the network administrator？（）

A.host
B.IP phone
C.access layer switch
D.distribution layer switch
E.core layer switch

单项选择题Wireless has been operating correctly in the campus infrastructure. After the wireless controllers are upgraded from LWAPP to CAPWAP， access points no longer boot and operate normally.  What is the most likely issue causing this problem？（）

A.VLAN assignments
B.DHCP option 43
C.PoE
D.ACL
E.QoS

单项选择题A standalone wireless AP solution is being installed into the campus infrastructure. The access points appear to boot correctly， however， wireless clients are not obtaining correct access. You verify that the local switch configuration connected to the access point appears as the following：  interface ethernet 0 1  switchport access vlan 10  switchport mode access  spanning-tree portfast  mls qos trust dscp  What is the most likely issue causing the problem？（）

A.QoS trust should not be configured on a port attached to a standalone AP.
B.QoS trust for switchport mode access should be defined as "cos".
C.switchport mode should be defined as "trunk" with respective QoS.
D.switchport access vlan should be defined as "1".

单项选择题A campus infrastructure supports wireless clients via Cisco Aironet AG Series 1230， 1240， and 1250 access points. With DNS and DHCP configured， the 1230 and 1240 access points appear to boot and operate normally； however， the 1250 access points do not seem to operate correctly.  What is the most likely issue causing this problem？（）

A.PoE
B.DHCP with option 150
C.DHCP with option 43
D.DNS
E.switch port does not support gigabit speeds