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

In GLBP， which router will answer on client ARP requests？（）

Which router is doing LSA type 7 to type 5 translation，and why？（）

Which three protocols should be explicitly managed by using Control Plane Policing on an Internet border router？（）

Phase I and Phase II DMVPN differ in terms of which of these characteristics？（）

Which two attributes need to match for two switches to become members of the same MST region？  （）

Multicast is being deployed in the network， and only ip pim sparse-dense mode has been configured on all interfaces in the network to support a new video streaming application. No other multicast configuration was applied anywhere in the network. Since enabling multicast， the network monitoring tools show periodic spikes in link utilization throughout the network， even in areas where the video application is not being used. What could be a possible cause？（）

Which statement is correct about an OSPF sham-link？（）

Which IOS security feature is configured by the ip inspect inspection-name {in  out} command？（）

Which three statements are true about policing？ （）