多項(xiàng)選擇題

Which two statements are true about CAC？（）

A.CAC is implemented in the call setup phase to allocate bandwidth resources
B.CAC is implemented in the call maintenance phase to allocate bandwidth resources
C.CAC is utilized during the call teardown phase to ensure that all resources have been released
D.CAC uses the Cisco RSVP （Resource Reservation Protocol） Agent to integrate call-processing capabilities with the underlying network infrastructure
E.CAC is implemented in the call setup phase to determine the destination of the call

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多項(xiàng)選擇題

For defining the QoS policies for each traffic class， which parameters should be identified？（）

A.minimum bandwidth guarantee
B.average bandwidth guarantee
C.optimum bandwidth guarantee
D.maximum bandwidth rate
E.IP precedence
F.priority

單項(xiàng)選擇題

Which statements is true about Foreign Exchange Station （FXS） ports on a router？（）

A.the FXS interface allows an analog connection to be directed at the public switched telephone network （PSTN’s） central office
B.the FXS interface connect directly to a standard telephone， fax machine， or sililar device and supplies ring， voltage， and dial tone
C.the FXS interface connect directly to an IP phone and supplies ring， voltage， and dial tone
D.the FXS interface connect directly to ISDN voice channels

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Which two statements are true about CAC？（）

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For defining the QoS policies for each traffic class， which parameters should be identified？（）

Which statements is true about Foreign Exchange Station （FXS） ports on a router？（）

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Which two statements are true about CAC？（）

For defining the QoS policies for each traffic class， which parameters should be identified？（）

Which statements is true about Foreign Exchange Station （FXS） ports on a router？（）