TCP/IP协议在Internet网中的作用是()（1.0）
A. 定义一套网间互联的通信规则或标准
B. 定义采用哪一种操作系统
C. 定义采用哪一种电缆互连
D. 定义采用哪一种程序设计语言
The ultimate goal of the design approach for the data structure is to arrive at a descript() of the data structure.
A. The data stream
B. The state transition
C. The process of the program
D. The data dictionary
Structured analysis is essentially an activity of ()
Access the user
B. Create a quick prototype
C. Make decisions
D. Create a model
The following statement about the data flow diagram is incorrect in ( )
All possible data flows and conditions for the data flow should be depicted in the data flow diagram
B. The basic point of a data flow diagram is to describe "what to do" regardless of "how to do"
C. A data flow diagram is a logical model of a system
D. One of the main uses of data flow diagrams is as a tool for analysis and design
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