单项选择题
Ausercanpingeverythingonthelocalnetworkearth.netfromanAIXbox（whichislocatedonearth.net）.However，iftheusertriestopingsomethingonanothernetwork（mars.net）theusermusttypethefullyqualifiedhostname.WhatcantheuserdosothatthefullyqualifiedhostnamedoesnothavetobetypedeverytimetheuserwantstoaccessANYmachineonmars.net？（）
A.Editthe/etc/hostsfileandaddanaliastothecorrectentry
B.Setupanaliasinhis.kshrcfiletoaliasthehostnametothefullyqualifiedhostname
C.Addanaliasto/etc/aliases
D.Addmars.nettothesearchpathoftheresolv.conffile
A.netfromanAIXbox（whichislocatedonearth.net）.However，iftheusertriestopingsomethingonanothernetwork（mars.net）theusermusttypethefullyqualifiedhostname.WhatcantheuserdosothatthefullyqualifiedhostnamedoesnothavetobetypedeverytimetheuserwantstoaccessANYmachineonmars.net？（）
A.Editthe/etc/hostsfileandaddanaliastothecorrectentry
B.Setupanaliasinhis.kshrcfiletoaliasthehostnametothefullyqualifiedhostname
C.Addanaliasto/etc/aliases
D.Addmars.nettothesearchpathoftheresolv.conffile
