A.CBR B.rt-VBR C.nrt-VBR D.UBR
A.MML；6000 B.FTP；6001 C.MML；6001 D.TCP/IP；6000
A.LAN B.WAN C.P3 D.Integrated
A.A B.B C.C D.D
A.\An_nms\bam\maintain B.\An_nms\ws\maintain C.\An_nms\bam\track D.\An_nms\ws\track
