請解釋以下網路封包的傳遞原理:
a. A(192.168.1.10)→B(192.168.1.120)
b. F(172.100.3.10)→E(172.100.3.120)
c. A(192.168.1.10)→R(172.100.6.126)
d. A(192.168.1.10)→G(172.100.6.98)
e. A(192.168.1.10)→D(172.100.6.88)
f. A(192.168.1.10)→F(172.100.3.10)
g. A(192.168.1.10)→E(172.100.3.120)
h. A(192.168.1.10)→網際網路(120.140.1.2)