单项选择题

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？（）

A. Gatekeeper multizone
B. Call Admission Control （CAC）
C. Automatic Alternate Routing （AAR）
D. Survivable Remote Site Telephony （SRST）
E. Cisco Unified CallManager Express （CME）

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单项选择题

Using the G.729 codec and the default cRTP configuration， what is the approximate VoIP bandwidth savings across a Frame Relay link that adds a 6 byte frame header？"（）

A. 55%
B. 58%
C. 60%
D. 63%

多项选择题

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.

多项选择题

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