CCIE系列認(rèn)證CCIE 415Q單項選擇題每日一練(2019.01.08)

來源：考試資料網(wǎng)

1 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？（）

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2 Which one of the following potential issues is eliminated by using split horizon？（）

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3 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？（）

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4 For the following items，what is the mathematical relationship between the committed information rate （CIR）， committed burst （Bc）， and committed rate measurement interval （Tc）？（）

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5 You are the network administrator of a Layer 3 switched network. Users in one VLAN are complaining that access to the server VLAN is very slow from time to time. Traffic in the local VLAN works without any issue， and users in other VLANs do not have any complaint to reach the server VLAN. What is most likely the cause of this issue？（）

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