● (66) is a protocol that a host uses to inform. a router when it joins or leaves anInternet multicast group.(67) is an error detection code that most data conlmunication networks usE.(68) is an interior gateway protocol that uses a distance vector algorithm to propagaterouting information.(69) is a transfer mode in which all types of information are organized into fixed form. cells on all asynchronous or nonperiodic basis over a range of mediA.(70) is an identifier of a web pagE.(66) A.ICMPB.SMTPC.IGMPD.ARP(67) A.4B／5BB.CRCC.Manchester CodeD.Huffman Code(68) A.OSPFB.RIPC.RARPD.BGP(69) A.ISDNB.x.25C.FramE.RelayD.ATM(70) A.HTTPB.URLC.HTMLD.TAG
A.B.
C.
D.
E.
(66)
F.ICMP
G.SMTP
H.IGMP
I.ARP
(67)
J.4B／5B
K.CRC
L.Manchester
M.Huffman
N.OSPF
O.RIP
P.RARP
Q.BGP
(69)
R.ISDN
S.x.25
T.FramE.
U.ATM
(70)
V.HTTP
W.URL
X.HTML
Y.TAG
，试求该系统的冲激响应h(t)
