多項選擇題What are two components of the QoS Integrated Services （IntServ） model？（）

A. link efficiency
B. admission control
C. classification and marking
D. shaping and policing
E. congestion avoidance using the RTP protocol
F. resource reservation using the RSVP protocol


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1.多項選擇題In a VoIP network， which three call signaling protocols are supported by the Cisco CallManager for call setup， call maintenance， and call teardown？ （）

A. H·323
B. UDP
C. RTP
D. TCP
E. Media Gateway Control Protocol （MGCP）
F. session initiation protocol （SIP）

4.多項選擇題Which two statements about the open and shared key wireless-authentication methods are true？ （）

A. Shared key authentication is considered more secure than open authentication.
B. Shared key authentication is considered less secure than open authentication.
C. If the WEP keys do not match using the open authentication method， the client will not authenticate， associate， and transfer data.
D. If the WEP keys do not match using the open authentication method， the client will still be able to authenticate and associate， but will not transfer data.
E. If the WEP keys do not match using the open authentication method， the client will still be able to authenticate， associate， and transfer data.

5.多項選擇題What are two features of WCS wireless management？ （）

A. centralized management for autonomous access points
B. centralized management for lightweight access points
C. integration with the Location Appliance to expand real time tracking to 1500 devices for 30 days
D. integration with the Location Appliance to expand real time tracking to 2500 devices for 15 days
E. the inclusion of an integrated AAA server
F. an external AAA-server requirement