MCQs on SDLC models with answers and detailed explanations for UGC NET, ISRO, and Assistant Professor: 1. In the Spiral Model, the radial dimension represents: a) Progress made in completing each cycle b) Cost of the project c) Level of risk involved d) Number of iterations completed Answer: a) Progress made in completing each cycle Explanation: In the spiral model diagram, the radial dimension shows the cumulative cost and progress, while the angular dimension represents phases. 2. Which of the following is a key feature that distinguishes the Spiral Model from other models? a) Phased development b) Heavy documentation c) Risk assessment at each iteration d) Parallel testing and coding Answer: c) Risk assessment at each iteration Explanation: Spiral is unique in systematically addressing risks at every stage. 3. In the Incremental Model, which of the following risks is reduced compared to the Waterfall model? a) Risk of system failure b) Risk of changing requireme...