Acme Company has several offices around the country. The company has deployed a VoIP network with Cisco Unified CallManager in a multisite centralized configuration but there is a requirement to place a call agent at some of the remote sites. Which IOS gateway feature should be deployed at the remote site to enable local call control？（）

单项选择题UsingtheG.729codecandthedefaultcRTPconfiguration，whatistheapproximateVoIPbandwidthsavingsacrossaFrameRelaylinkthataddsa6byteframeheader？ （）

A. 55%
B. 58%
C. 60%
D. 63%

多项选择题Whichtwostatementsabouttheopenandsharedkeywireless-authenticationmethodsaretrue？（）

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.

多项选择题WhataretwofeaturesofWCSwirelessmanagement？（）

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

多项选择题WhataretwofeaturesofWLSE-Expresswirelessmanagement？（）

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

多项选择题Whenarouterconvertsanalogsignalstodigitalsignals，whatthreestepsarealwaysincludedintheprocess？（）

A. involution
B. encoding
C. sampling
D. quantization
E. compression
F. companding