单项选择题
A.ypbind
B.ypserv
C.ypwhich
D.yppasswdd
单项选择题 Asystemadministratorhasaddedanewportentryin/etc/servicesforanewapplicationtobetested.Whichofthefollowingcommandsshouldbeusedtoactivatethisport？（）
单项选择题 OnAIXsystems，whereDNSresolutiontakesprecedenceoverNIS，aparticularprocessneedstoresolvenamesusing/etc/hostsfirst.Whichofthefollowingprocessesisthebestwaytoaccomplishthiswithoutaffectingtherestofthesystem’snameresolution？（）
单项选择题 Whichcommandisusedtoturnipforwardingonoroff？（）