1.use case shows interactions between actors and environment :: true or false

True or false

use case shows interactions between actors and environment true or false

2. in incremental development the cost of accommodating changing customer requirement is high : true or F

3. majority of maintenance effort is spend on fault repair activity: T or F

4. the main drawback of the agile methodology is the difficult of accommodating cnage after the progress is underway : T or F:

5. customer software products are developed to be sold to a range of different customers

6. in incremental development , increments serve as examples to explore requirements : T or F

7. in agile development, responding to change is more important than following a plan : T or F

8. activity diagram show object interactions arranged in time sequence : T or F

9. IN OPEN-SOURCE development only volunteers and not professional developer can participate in the further development of the system: T or F