The core of a network has four routers connected in a square design with Gigabit Ethernet links using /30 subnets. The network is used to carry voice traffic and other applications. Convergence time is taking more than expected. Which three actions would you take to improve OSPF convergence time？（） Increase MTU of the interfaces to accommodate larger OSPF packets.。 Change the network type to point-to-point on those links.。 Reduce SPF initial timer.。 Increase hello interval to avoid adjacency flapping.。 Enable OSPF。
修饰定量组学需要做重复分析实验么？
《中华人民共和国铁路法》对无票乘车或者持失效车票乘车的，应当补收票款，并按照规定加收票款；拒不交付的，铁路运输企业可以责令下车。
简述班级中非正式群体与正式群体的关系。
褶曲构造时，采煤工作面运输巷沿（）掘进，即可便利运输，又可减少煤炭损失。 背斜轴。 向斜轴。 与背斜轴垂直方向。 与向斜轴垂直方向。
包裹是指适合在旅客列车行里车内运输的（）.
