（）所基于的原则是：证券市场本身并不创造新价值，如果行动同大多数投资者相同，则一定不是获利最大的，要获得最大利益，一定要同大多数人的行动不一致。

● Every host and router on the Internet has an IP address，which encodes its (69) ．

(69) A．host number

B．host number and socket

C．network number

D．host number and network number

Every host and router on the Internet has an IP address, which encodes its

A．host number

B．host number and socket

C．network number

D．host number and network number

Every host and router on the Internet has an IP address, which encodes its(12).

A．host number

B．network number

C．host number and socket

D．host number and network number

Every host and router on the Internet has an IP address, which encodes its(72).

A．host number

B．network number

C．host number and socket

D．host number and network number

Every host and router on the Intemet has an IP address, which encodes its

A．host number

B．host number and socket

C．network number

D．host number and network number

Every host and muter on the Internet has an IP address,which encodes its(69).

A．host number

B．host number and socket

C．network number

D．host number and network number

A．200. 132. 112.1

B．255. 258.250.0

C．200. 173. 254..50

D．255. 252.250.0

A. any route advertisements it has received

B. prefixes for the link

C. keepalive timers

D. IPv6 address for the host

E. request for the local host IP address

F. lifetime of the prefix

A.from host PC1 to host 5.1.1.10

B.from host PC1 to host 5.1.3.10

C.from host PC2 to host 5.1.2.10

D.from host PC2 to host 5.1.3.8

Which of the following statements about internet is (are) correct？

Ⅰ.Each host in internet only has a IP address.

Ⅱ.It is possible to have multiple names corresponding to the same IP address.

Ⅲ.In users' points, Internet means a virtual network.

A．None

B．Ⅰ and Ⅱ

C．Ⅱ and Ⅲ

D．All