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单选题
在QOSDiff-SERVER模型中，DSCP的0-2位定义了8种服务类别，5表示（）
A
EF
B
其他选项均不对
C
BF
D
AF
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下列关于OSI参考模型的描述中，错误的是( )。A．OSI参考模型定义了开放系统的层次结构B．OSI参考模型定义了各层所包括的可能的服务C．OSI参考模型定义了各层接口的实现方法D．OSI参考模型作为一个框架协调组织各层协议的制定
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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
考题
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
考题
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
考题
What is the typical marked DSCP value for a voice signaling packet in VoIP technology？（）A、BEB、AF41C、AF21D、EFE、AF31
考题
以下关于DSCP和IP Precedence的比较的说法正确的是（）。A、DSCP可以兼容IP PrecedenceB、因为DSCP扩展了用于流分类的比特位，所以不能简单的映射到IP Precedence里面去C、DSCP包括6比特而IP Precedence包括3比特D、因为仅仅可以使用RFC定义的DSCP，DSCP在使用上比IP Precedence更受限制
考题
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
考题
多选题以下关于DSCP和IP Precedence的比较的说法正确的是（）。ADSCP可以兼容IP PrecedenceB因为DSCP扩展了用于流分类的比特位，所以不能简单的映射到IP Precedence里面去CDSCP包括6比特而IP Precedence包括3比特D因为仅仅可以使用RFC定义的DSCP，DSCP在使用上比IP Precedence更受限制
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
考题
单选题在许多的服务质量评估模型中，最受其他学者认同的是（ ）。A
SERVQUALB
PZBC
服务质量概念化模型D
顾客感知质量模型
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