单项选择题 A previously functional, scheduled snapshot operation against a JFS2 filesystem has failed. The JFS2 filesystem is mounted and appears intact. What is the most likely cause of the failure and how should it be resolved?（）

单项选择题 An administrator is supporting an AIX 6.1 LPAR remotely and needs a tape operator to plug a cable into an Ethernet adapter. The tape operator does not have POWER6 595 knowledge. What can the administrator do to assist the tape operator to locate the correct adapter?（）

单项选择题 Which command will list the top 5 memory intensive processes?（）