答案:A
--- ____ at the new school?
--- Fine, I've got used to the life there and I've made some friends.
A.How are you
B.How are you doing
C.Are you getting on well
D.How do you do
DiffServ是Internet实现QoS的一种方式,它主要依靠___1___,其主要缺点是___2___。
1()
A.RSVP和PATH
B.SLA和PHB
C.LSR和RTP
D.RESV和FEC