While troubleshooting an EIGRP routing problem you notice that one of the routers have generated a large number of SIA messages. What are two possible causes for EIGRP Stuck - In -Active routes?（）
ASome quer y or reply packets are lost between the routers.
BThe neighboring router starts receiving route updates from this router.
CA failure causes traffic on a link between two neighboring routers to flow in only one direction(unidirectional link).
DTh e neighboring router stops receiving ACK packets from this router.
被遣送出境的人员，自被遣送出境之日起一至三年内不准入境。
A、对
B、错
What is true about a Bypass Tunnel in MPLS Fast Reroute?（）
A、Only configured on the egress router
B、Only configured on the ingress router
C、Is pre-signalled to reduce packet loss
D、Must intersect the primary LSP at two locations
倡导以数学为基础的唯理论的演绎法的是（）。
A、亚里士多德
B、弗兰西斯·培根
C、笛卡尔
D、康德
商品交易行为时税负转嫁的必要条件。
A、对
B、错
梁启超云：“经学即理学一语，则炎武所创学派之新旗帜也。„„有清一代学术，却在此旗帜下获得了新生命。”“新生命”主要指的是（）
A、摒弃理学
B、弘扬孔孟
C、中西合璧
D、经世致用