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单选题
What is the typical marked DSCP value for a voice signaling packet in VoIP technology？（）
A
BE
B
AF41
C
AF21
D
EF
E
AF31
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What is the typical marked DSCP value for a voice signaling packet in VoIP technology？（）A、BEB、AF41C、AF21D、EFE、AF31
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VoIP bearer traffic is typically marked to which DSCP value？（）A、cs3B、cs7C、efD、af41E、af31F、0（default）
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With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）A、AF ClassB、Drop ProbabilityC、CS（Class Selector Value ）D、PHB （Per-Hop Behavior ）E、IP PrecedenceF、Queue Depth
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You are working with CIS .com. who has identified the following IP applications on their network: IP voice and voice signaling, streaming video, PeopleSoft, Microsoft SQL, e-mail, and Internet traffic. If the voice traffic was classified as EF and AF31, the e-mail was classified as AF11, and the Internet traffic was classified as DSCP 0, how would the transactional traffic represented as PeopleSoft and Microsoft SQL be classified?（）A、DSCP AF21B、DSCP CS4C、DSCP AF33D、DSCP AF13
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On the basis of the definitions of different services in various RFCs， traffic with Expedited Forwarding per-hop behavior should be marked as which of these？（）A、IP ToS of 0xEFB、IP experimental ECNC、DSCP decimal 5D、Binary value of 101110
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考题
单选题What is the typical marked DSCP value for a voice media packet in Voice over IP technology？（）A
AF41B
AF31C
AF21D
BEE
EF
考题
单选题What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones？（）A
79xx IP phones do not automatically mark voice packets with non-zero DSCP values.B
79xx IP phones do not mark protocol packets such as DHCP， DNS， or TFTP with non-zero DSCP values.C
79xx IP phones do not mark voice packets with optimal DSCP values.D
79xx IP phones use a custom protocol to communicate CDP information to the switch.
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多选题Which two statements are correct about the signaling methods that are utilized for transmitting voice？ （）AChannel-associated signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.BChannel-associated signaling utilizes a separate TDM channel for transmitting control signals.CCommon channel signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.DCommon channel signaling uses one of the TDM channels to transmit control information reducing the number of channels available for voice.EISDN BRIs implement channel-associated signaling.
考题
单选题For acceptable voice calls, the packet error rate should be no higher than what value?（）A
0.1%B
1%C
2.5%D
25%
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单选题You are working with CIS .com. who has identified the following IP applications on their network: IP voice and voice signaling, streaming video, PeopleSoft, Microsoft SQL, e-mail, and Internet traffic. If the voice traffic was classified as EF and AF31, the e-mail was classified as AF11, and the Internet traffic was classified as DSCP 0, how would the transactional traffic represented as PeopleSoft and Microsoft SQL be classified?（）A
DSCP AF21B
DSCP CS4C
DSCP AF33D
DSCP AF13
考题
单选题With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）A
AF ClassB
Drop ProbabilityC
CS（Class Selector Value ）D
PHB （Per-Hop Behavior ）E
IP PrecedenceF
Queue Depth
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单选题You are the network administrator of an enterprise with a main site and multiple remote sites. Your networkcarries both VOIP and data traffic. You agree with your service provider to classify VOIP and data trafficaccording to the different service RFCs. How can your data and VOIP traffic be marked？（）A
data marked with DSCP AF21，VOIP marked with DSCP EFB
data marked with DSCP AF51，VOIP marked with DSCP EFC
data marked with the DE-bit. VOIP marked with the CLP-bitD
data marked with DSCP EF，VOIP marked with DSCP AF31E
data marked with IP precedence 5，VOIP marked with DSCP EF
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单选题What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）A
CS3B
CS1C
EFD
5E
6
考题
单选题VoIP bearer traffic is typically marked to which DSCP value？（）A
cs3B
cs7C
efD
af41E
af31F
0（default）
考题
单选题You are the network administrator of an enterprise with a main site and multiple remote sites. Your network carries both VOIP and data traffic. You agree with your service provider to classify VOIP and data traffic according to the different service RFCs. How can your data and VOIP traffic be marked？（）A
data marked with DSCP AF21，VOIP marked with DSCP EFB
data marked with DSCP AF51，VOIP marked with DSCP EFC
data marked with the DE-bit，VOIP marked with the CLP-bitD
data marked with DSCP EF，VOIP marked with DSCP AF31E
data marked with IP precedence 5 VOIP marked with DSCP EF
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