Question

The analysts at Techno InfoSystems are considering the four-model approach to system development for a new client.

Answer 1

​It will provide a clear picture of current system functions before any modifications or improvements are made is a benefit if they use the four-model approach.

Option: D

Explanation:

The four model approach is followed by number of analyst which showcase that they construct the physical and logical model of both current and new system. The most important advantage of such approach is it portrays transparent image of ongoing system, before one apply any modification or variation. This is necessary because the flaws which generated earlier in system may affect the SDLC phases and outcome of such process may result into unsatisfied user by paying additional cost. This can be avoided by taking additional steps which make it worth it. The major disadvantage of such approach is the added time and cost of constructing model in both current system.