When should traffic shaping be implemented on Frame Relay PVCs？（） ["When you want to drop excess traffic above the CIR","When there is a speed mismatch between the central site and the remote site","When using Frame Relay SVCs","When over-subscribing the central site link","When LLQ is implemented on the Frame Relay PVC","When Multilink PPP LFI is implemented on the Frame Relay PVC"]
情报检索和检索系统
Refer to the exhibit. Both routers have been configured as VoIP gateways. They must also support traditional telephony devices to connect to analog telephones. Which two configuration changes would correctly support the voice requirements?（） ["on each router， under the dial-peer voice 1 pots configuration， add the port fa0\/0 command","on each router， under the dial-peer voice 1 pots configuration， add the port 1\/0\/0 command","on each router， configure dial-peer voice 1 as a voip connection and configure dial-peer voice 2 as a pots connection","under the dial-peer voice 1 pots configuration， change the destination pattern of 1111 to 2222 on the R1 router， and 2222 to 1111 on the R2 router","under the dial-peer voice 2 voip configuration， change the destination pattern of 1111 to 2222 on the R1 router， and 2222 to 1111 on the R2 router","under the dial-peer voice 2 voip configuration， change the destination target address of 10.2.2.2 to 10.1.1.1 on the R1 router， and the destination target address of 10.1.1.1 to 10.2.2.2 on the R2 router"]
简述转速反馈控制的直流调速系统的静特性本质。
“时差利息论”把利息看成是人们对商品在不同时期的不同评价而产生的价值差异。（）
在《岩间圣母》一画中，达・芬奇使用明确的（）来安排人物。他的这一做法为当时盛行的（）构图奠定了基础。
