A.voice gateways with analog interfaces need a gatekeeper to convert analog signals into digital format before voice is encapsulated into IP packets
B.voice gateways need a gatekeeper to interconnect the VoIP networks the PSTN network
C.voice gateways with Cisco Unified CallManager Express （CME） can permanently act as a call agent for IP phones
D.voice gateways equipped with a DSP module can take the role of the call agent during WAN failure.
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A.in global configuration mode， apply the service policy and use the qos pre-classify
B.in global configuration mode， apply the service policy but do not use the qos pre-classify command
C.apply the service policy on the physical interface but do not use the qos pre-classify
D.apply the service policy on the tunnel interface but do not use the qos pre-classify command
E.apply the service policy on the tunnel interface and use the qos pre-classify command
A.business-critical
B.high priority
C.middle class
D.voice
E.best effort
F.scavenger
A.end-to-end network delay times that exceed 50 ms for real-time traffic are considered unacceptable
B.end-to-end network delay times that exceed 250 ms for real-time traffic are considered unacceptable
C.end-to-end network delay is not a factor as long as the delay is consistent
D.some packet loss can be corrected by codec algorithms
E.RSVP handles voice packet retransmission
F.fragmentation is a result of packet loss
A.analog trunks that provide the Survivable Remote Site Telephony (SRST) feature
B.analog trunks that provide VoIP gateway functionality
C.analog trunks that connect a gateway to plain old telephone service (POTS) device such as analog phones, fax machines, and legacy voice-mail systems
D.analog trunks that connect a gateway to a central office (CO) or private branch exchange (PBX)
A.sampling
B.packetization
C.quantization
D.serialization
最新試題
What are two reasons to implement H·323 gatekeepers？（）
Which two commands should be entered on a WLAN controller to remove any residual configuration？（）
For delay sensitive traffic， what are the three best ways that are used to prevent packet loss？ （）
What are three factors used to determine the amount of bandwidth that is required for a single VoIP call？ （）
Which three functions can an Integrated Services Router perform in a VoIP network？（）
When deploying a Cisco Wireless Control System （WCS） with the 2700 series location appliance， to within what range is on-demand location of rogue APs possible？（）
Which two statements are true about Voice over IP （VoIP） packet delivery in a digital infrastructure？ （）
When QoS levels in the Cisco Wireless Control System （WCS） are entered， which profile names are used to identify the access categories？（）
Which two VoIP capabilities are utilized when the CallManager and the gateway are configured for Survivable Remote Site Telephony？（）
What is the term that is used to describe the process of converting a signal from digital to analog？（）