what is DSCP？
what is DSCP？
相关考题：
以下对于DSCP描述正确的是()。 A.在网络入口处对分组进行分类，流量控制，设置DSCP值。B.在网络中根据DSCP值，进行队列调度，分组丢弃。C.IP报文TOS字节的前6个bit定义为DSCP值。D.DSCP的定义也向前兼容IP Precedence。
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
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.
Whichtrafficdescriptorscanberecognizedandcategorizedbyciscoqualityofservice(qos)features?() A.incominginterface.outgoinginterface.ipprecedence.anddifferentiatedservicescode P.oint（DSCP）.B.Incominginterace.ipprecedence.differentiatedservicescodepoint（DSCP），andsourceor d.estinationaddress.C.Outgoinginterface.ipprecedence.differentiatedservicescodepoint（DSCP）.andsourceor d.estinationaddress.D.Incominginterface.outgoinginterface.ipprecedenceanddifferentiatedcodepoint s.ervices（DCPS）E.Incominginterface.ipprecedence.andsourceordestinationaddress.F.Outgoinginterface.ipprecedence.andsourceordestinationaddress.
LTE业务到PTN的QoS映射分为两步,分别是() A.PTN根据基站上报的DSCP进行速率QoS映射B.PTN设备根据IP报文的IP DSCP和VLAN PRI映射到MPLS TCC.基站根据QCI映射到IP报文的IP DSCP和VLAN PRID.基站根据UE发起的期望速率上报DSCP
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
End-to-end QoS is maintained in the Cisco WLAN deployment model by utilizing what parameter in lieu of 802.1p？（）A、 IP precedenceB、 type of service （ToS）C、 class of service （CoS）D、 differentiated services code point （DSCP）
Which two statements correctly describe a Cisco WLC configuration of Wireless QoS Profiles Wired_QoS_Profiles for an implementation of DSCP or CoS deployment?（）A、It must always be set on all QoS profile types because this sets the type of markings as either CoS or DSCP.B、It is optional if the Cisco WLC attached switch operates on a trust DSCP model.C、It must be set if the Cisco WLC attached switch operates on a trust CoS model.D、It sets the EDCF queue used for the radio-transmitted frames.
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
What is the typical marked DSCP value for a voice signaling packet in VoIP technology？（）A、BEB、AF41C、AF21D、EFE、AF31
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
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
What is the typical marked DSCP value for a voice media packet in Voice over IP technology？（）A、AF41B、AF31C、AF21D、BEE、EF
You are the network administrator of an enterprise company that just deployed a global IP telephony environment. In order to guarantee good voice quality， you asked your provider to implement QoS on the CE routers of your MPLS network. On your LAN， you have also deployed QoS. Users， however， keep complaining about bad voice quality， and the provider does not see matches on the DSCP values that you have asked him to match upon. What is most likely the problem？（）A、The phones are not sending traffic with the correct DSCP value.B、The Cisco CallManager is not marking the traffic correctly.C、This is most likely a bug on the CE routers.D、Your LAN QoS is incorrectly configured.
Your Cisco network currently runs OSPF and you have a need to policy-route some specific traffic，regardless of what the routing table shows. Which one of these options would enable you to policy-route the traffic?（）A、source IP address and the protocol （such as SSL，HTTPS，SSH）B、the packet Time to Live and the source IP addressC、type of service header and DSCP valueD、destination IP address
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.
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
单选题With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）AAF ClassBDrop ProbabilityCCS（Class Selector Value ）DPHB （Per-Hop Behavior ）EIP PrecedenceFQueue Depth
单选题Your Cisco network currently runs OSPF and you have a need to policy-route some specific traffic，regardless of what the routing table shows. Which one of these options would enable you to policy-route the traffic?（）Asource IP address and the protocol （such as SSL，HTTPS，SSH）Bthe packet Time to Live and the source IP addressCtype of service header and DSCP valueDdestination IP address
单选题What is the typical marked DSCP value for a voice signaling packet in VoIP technology？（）ABEBAF41CAF21DEFEAF31
单选题End-to-end QoS is maintained in the Cisco WLAN deployment model by utilizing what parameter in lieu of 802.1p？（）A IP precedenceB type of service （ToS）C class of service （CoS）D differentiated services code point （DSCP）