單項(xiàng)選擇題Voice activity detection (VAD) suppresses the transmission of silence patterns. On average, and assuming that a link carries at least 24 calls, what percentage of total bandwidth could VAD save?()

A.5
B.15
C.25
D.35
E.45
F.55


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A.bursty
B.constant
C.bandwidth intensive
D.small packet sizes
E.time-sensitive
F.retransmittable

3.單項(xiàng)選擇題Which statement is true about the distributed call control in a VoIP network?()

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B.Call setup and control functionality is centralized in one call agent or cluster
C.Call setup and control resides in call agents that are distributed throughout the network
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4.單項(xiàng)選擇題What is the purpose of the NBAR protocol discovery?()

A.to build a Packet Description Language Module (PDLM) file to be used in protocol matching
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6.多項(xiàng)選擇題Which two Cisco Wireless Control System (WCS) statements are true?()

A.the WCS Base version includes all the features of the WCS Location version as well as additional enhancements
B.the WCS Base version provides on-demand location of rogue access points and clients to within 33 feet (10 meters)
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D.WCS includes a network management tool which is similar to a site survey tool
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7.單項(xiàng)選擇題What is a drawback to using the IntServ model?()

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8.單項(xiàng)選擇題What is the best description of serialization delay? ()

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10.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
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E.CAC is implemented in the call setup phase to determine the destination of the call

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