单项选择题 To examine the Exhibit, press the Exhibit button. Based on the output of the "netstat -p udp" command as shown in the exhibit, which of the following procedures should be performed?（）

单项选择题 Adiskcontainsseverallogicalvolumes.Whichofthefollowingcommandsindicateshowmuchdataisreadfromorwrittentoaparticularlogicalvolumeonthesamedisk?（）

单项选择题 Ausercomplainsthatthenetworkprinterisnotprinting.Thesystemadministratorknowsthereisaprintqueueforthenetworkprinterandneedstocheckonthequeue.Whichcommandisrun?（）