47, software requirements engineering activities can be divided into 5 separate stages: Demand acquisition, demand modeling, the formation of requirements, requirements validation and demand management, demand modeling is ()

The second half of 2013 soft test senior Information System Project Manager comprehensive knowledge of the real problem answer and analysis:

47, software requirements engineering activities can be divided into 5 separate stages: Demand acquisition, demand modeling, the formation of requirements, requirements validation and demand management, demand modeling is ()
A. The process of analyzing the correctness and feasibility of the requirements
B, abstract description of the requirements
C, a precise formal description of the build Demand model component
D. Developing, capturing and revising the needs of users

Pipe Network Reference Answer: B
Pipe Network analysis:
Requirement modeling is the process of requirement analysis, which aims at analyzing and describing various requirements information and establishing a conceptual model for the target system.
5 Phases of software requirements Engineering activities: http://www.cnitpm.com/pm/8990.html

The activities of demand engineering can be divided into the following 5 independent stages:
(1) Demand acquisition: Through the communication with the user, the observation of the existing system and the analysis of the task, so as to develop, capture and revise the needs of users;
(2) Demand modeling: Establish a conceptual model of the system that the end user sees as an abstract description of the requirements and, as much as possible, capture the semantics of the real world;
(3) Form Requirements Specification: Generate a precise formal description of the requirements model components as a compact between the user and the developer;
(4) Requirements verification: to the requirements specification as input, through symbol execution, simulation or rapid prototyping, and other ways to analyze the correctness and feasibility of requirements specifications;
(5) Demand management: Support the evolution of the requirements of the system, such as demand changes and traceability issues.

47. The activities of software requirements engineering can be divided into 5 separate phases: requirements acquisition, requirements modeling, requirements specification, requirements validation and demand management, and demand Modeling is ()