多項選擇題Which two statements are true about RSVP and the InServ QoS model？（）

A.a drawback of implementing RSVP is the requirement to migrate to a supporting routing protocol
B.RSVP uses DSCP to signal QoS requirements to routers 
C.RSVP is a routing protocol
D.RSVP is an IP protocol that uses IP protocol ID 46， and TCP/UDP ports 3455
E.RSVP specifically provides a level of service for rate-sensitive and delay-sensitive traffic
F.the flow-based approach of RSVP is ideal for large， scalable implementations such as the public internet


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3.單項選擇題Which certification-based protocol is implemented for wireless QoS between an AP and a wireless client over RF media？（）

A.WMM using DCF
B.WMM using EDCAF
C.802.1e using DCF
D.802.1e using EDCAF

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