n your Cisco EIGRP network， you notice that the neighbor relationship between two of your routers was recently restarted. Which two of these choices could have made this occur？（） An update packet with init flag set from a known， already established neighbor relationship was received by one of the routers.。 The ARP cache was cleared.。 The counters were cleared.。 The IP EIGRP neighbor relationship was cleared manually.。
自由升起高度
怎样判断课程内容的正确性？
Which of the following correctly describe steps in the OSI data encapsulation process?（） The transport layer divides a data stream into segments and may add reliability and flow control information.。 The data link layer adds physical source and destination addresses and an FCS to the segment.。 Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.。 Packets are created when the network layer adds Layer 3 addresses and control information to a segment.。 The presentation layer translates bits into voltages for transmission across the physical link.。
对“规则”的理解方式与感受方式有哪些？
旅客须按票面载明的日期、车次、席别乘车，并在票面规定（）内到达到站。
