A.FXS
B.FSO
C.E&M
D.auxiliary port
E.802.3af ethernetports

A.FIFO queuing， which provides a means to hold packets while they are waiting to exit an interface
B.Priority queuing， which ensures a fixed amount of bandwidth
C.Custom queuing （CO）， which provides a queuing tool that services all queues， even during times of congestion
D.Bandwidth queuing， which ensures a minimum amount of bandwidth
E.Weighted fair queuing （WFO）， which classifies packets based on flows

A.World Wide Web traffic using load balanced web servers
B.voice
C.peer to peer applications mission critical applications
D.peer to peer applications
E.multicast routing protocols

A.An autonomous wireless solution includes lightweight APs and WLAN controllers. The APs and the WLAN controllers are managed by a WLAN solution engine （WLSE/WLSM）.
B.An autonomous wireless solution includes lightweight APs and WLAN controllers. The APs and the WLAN controllers are managed by the Cisco Wireless Control System （WCS）.
C.A lightweight wireless solution includes lightweight APs and WLAN controllers. The APs and the WLAN controllers are managed by a WLAN solution engine （WLSE/WLSM）.
D.A lightweight wireless solution consists of autonomous access points （APs）， which are managed by a WLAN solution engine （WLSE/WLSM）.
E.A lightweight wireless solution includes lightweight APs and WLAN controllers. The APs and the WLAN controllers are managed by the Cisco Wireless Control System （WCS）.

A.core distribution access
B.multisite with centralized call processing
C.multisite with distributed call processing
D.clustering over WAN
E.PSTN-WAN
F.Enterprise Composite Model