班级工作的检查与调节以检查方式为依据，可分为全面检查与调节和专题检查与调节。
While troubleshooting a network， you need to verify the liveness of hosts in the subnet 192.168.1.64/26. All of the hosts are able to reply to ping requests. How would you confirm the existing nodes using one single command？（） ["ping 192.168.1.255","ping with sweep option","ping 192.168.1.127","ping 192.168.1.64","ping with broadcast optio"]
Which three statements describe the configuration change management feature in DCNM LAN？ （） [" Switch profiles allow configurations to be synchronized between switches and are supported with any Cisco NX-OS Software managed device."," DCNM LAN can archive configurations from devices even if they are not managed by the DCNM server， and the administrator can supply the device management IP address and credentials."," You can archive a maximum of 50 configuration versions per managed device."," Managed devices must be licensed in DCNM LAN before they can be used with configuration change management."," Device-running configuration will be archived only if it differs from the last archived version."]
列车行李员要充分利用运输能力，并组织（），维护列车正点运行。 ["巧装满载","快装快卸","计划装车","先卸后装"]
按照ITU-T规定，在TWC常用的指标的测试中，描述正确的是（） ["SMSR的测试结果应该大于35dBm","-20dB谱宽小于或等于0.2nm","波长最大中心频率偏移为±40GHz","输出光功率范围为-10dBm～0dBm"]
迁移性
