从《共产党宣言》发表到今天，170年过去了，人类社会发生了翻天覆地的变化，但马克思主义所阐述的一般原理整个来说仍然是完全正确的。
查看答案
In the following four descriptions, which one is correct?( )
A. In C/S architecture, clients communicate with each other directly.
B. In C/S architecture, client has a fixed well-known address.
C. In P2P architecture, peers communicate with each other directly.
D. In P2P architecture, peer has a fixed well-known address.
In the context of a communication session between a pair of process, the process that initiates the communication is labeled as the( ) , the process that waits to be contacted to begin the session is labeled as the( ).
A. client process, server process
B. sending process, receiving process
C. input process, output process
D. communicating process, connecting process
A socket is the interface between ( )within a host.
A. the network layer and the link layer
B. the link layer and the physical layer
C. the application layer and the transport layer
D. the transport layer and the network layer
In the following applications, which one is a loss-tolerant application?( )
A. E-mail
B. file transfer
C. instant messaging
D. real-time audio
微信支付 
支付宝支付