You have two EBGP peers connected via two parallel serial lines. What should you do to be able to load-balance between two EBGP speakers over the parallel serial lines in both directions？ （） ["nothing，BGP automatically load-balances the traffic between different autonomous systems on all available links","peer between the eBGP speaker’s loopbacks， configuring eBGP multihop as required， and use an IGP to load-share between the two equal-cost paths between the loopback addresses","configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the EBGP peer loopback address；it is also necessary to use the next-hop-self command","use the ebgp-load-balance command on the neighbor statement on both sides","configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the peer loopback address；it is also necessary to use the ebgp-multihop and next-hop-self command"]
调解
How is RPF used in multicast routing？（） ["to prevent multicast packets from looping","to prevent PIM packets from looping","to instruct PIM where to send a （*， G） or （S， G） join message","to prevent multicast packets from looping and to instruct PIM where to send a （*， G） or （S， G） joinmessage"]
提单
课程注重教学的内容，强调传统文化的传递与继承，通常以逻辑组织严密的分科课程的面貌出现”，这是哪一种课程取向？（） ["人本主义取向","学术理性主义取向","认知发展取向","社会重建取向"]
静力载荷
