单项选择题
A disk contains several logical volumes. Which of the following commands indicates how much data is read from or written to a particular logical volume on the same disk?（）
A. sar B. iostat C. svmon D. filemon
单项选择题 Ausercomplainsthatthenetworkprinterisnotprinting.Thesystemadministratorknowsthereisaprintqueueforthenetworkprinterandneedstocheckonthequeue.Whichcommandisrun?（）
单项选择题 WhichsystemresourcesdoesWLMhavethecapabilitytocontrol?（）
单项选择题 Whichsaroptiongeneratesreal-timediskI/Ostatistics?（）
