增强顾全大局的意识，必须坚持小道理服从大道理。
A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device? (Choose two.)（） hub。 router。 switch。 STP。 subinterfaces。 VLAN。
辛普森式行星齿轮机构为一种具有（）等几个独立元件的行星齿轮机构。 前齿圈。 前后太阳轮组件。 后行星架。 前行星架和后齿圈组件。
现有两辆试验样车进行30000km可靠性试验，1辆车出现3类以上故障14次，另1辆车出现3类以上故障16次，试计算平均故障间隔里程。
A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（） For the two vlans to communicate，a network statement for the trunk interface needs to be added to the OSPF configuration.。 For the two vlans to communicate， a network statement for each subinterface needs to be added to the OSPF configuration.。 Direct inter-vlan communication does not require OSPF。 OSPF cannot be used if router-on-a-stick is configured on the router。
《铁路客运运价规则》学生票可享受（）的优惠。
