In MPLS traffic engineering， which one of the following protocols is used for Path Setup？（） ["BGP","OSPF","ISIS","RSVP"]
Prior to 802.1w， Cisco implemented a number of proprietary enhancements to 802.1D to improve convergence in a Layer 2 network. Which statement is correct？（） ["Only UplinkFast and BackboneFast are specified in 802.1w； PortFast must be manually configured.","Only PortFast is specified in 802.1w； UplinkFast and BackboneFast must be manually configured.","None of the proprietary Cisco enhancements are specified in 802.1w.","PortFast， UplinkFast， and BackboneFast are specified in 802.1w."]
在李斯特本国幼稚产业保护论的政策主张有（）。 ["保护的目的","保护的对象","关税保护国内工业","不同工业保护程度不同","追求贸易顺差"]
It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit.Which of the following processes are required to accomplish this task?（） [" configure static frame relay map entries for each subinterface network."," remove the ip address from the physical interface"," create the virtual interfaces with the interface command"," configure each subinterface with its own IP address"," disable split horizon to prevent routing loops between the subinterface networks"," encapsulate the physical interface with multipoint PPP"]
动态相关性
何谓“手臂”？其长短与亲和层析效果有何联系？为什么？
