You created a snapshot of the /data2 filesystem as follows: # fssnap -F ufs -o bs=/data2/snap /data2 But, the system responds with the following error: snapshot error: Invalid backing file path What is the problem? ()
A. The /data filesystem does not exist.
B. This message indicates that the /data2/snap directory does not exist.
C. The name of the Backing Store is incorrect, it should be /dev/fssnap/0
D. This message indicates that you cannot have the backing store file on the same filesystem as the filesystem being snapped.
输电线路状态监测装置的数据采集单元外壳防护等级应符合()的要求。
A. IP54
B. IP55
C. IP64
D. IP65
过度聪明往往会自我意识膨胀,喜欢好大喜功,这提醒在团队建设中要()
A. 增强领导才能
B. 听取员工的意见
C. 为员工提供深造的机会
D. 充分发挥领导的沟通和协调作用
在300km/h及以上线路,CTCS-3级列控系统车载设备速度容限规定为超速5km/h报警,超速5km/h触发常用制动,超速15km/h触发紧急制动。
A. 正确
B. 错误