Online CTFL_Syll2018 Questions Video

 According to the syllabus, the choice of a particular type of software development life cycle (SDLC) model depends on various factors, such as project size, complexity, scope, budget, schedule, quality requirements, risk level, customer involvement, etc. The type of product being developed is one of the most important factors that influences the selection of an SDLC model, as different products may have different characteristics, expectations, and challenges that require different approaches to development. For example, a product that has well-defined and stable requirements may benefit from a sequential SDLC model like waterfall or V-model, while a product that has vague or changing requirements may benefit from an iterative SDLC model like incremental or agile. The answer D is correct because it best reflects the reason for selecting a particular type of SDLC model. The other answers are incorrect because they are not good reasons for selecting a particular type of SDLC model. Tester skill level with the SDLC model (A) may affect the effectiveness and efficiency of testing activities, but it should not be the primary factor for choosing an SDLC model. Testers should be able to adapt to different SDLC models depending on the project context and objectives. The project manager’s preference (B) may reflect their personal experience or opinion, but it should not be the sole factor for choosing an SDLC model. The project manager should consider various factors and consult with other stakeholders before selecting an SDLC model. The project team’s overall familiarity with the model © may affect the productivity and collaboration of the team members, but it should not be the main factor for choosing an SDLC model. The project team should be able to learn and apply different SDLC models depending on the project context and objectives.

References: Certified Tester Foundation Level Syllabus, Section 1.1.1, page 9-10.

 it provides the highest level of transition coverage for the model. Transition coverage is a white-box test technique that focuses on the percentage of transitions that have been exercised by a test suite1. In this case, the model is a state transition diagram that shows the possible states and transitions of a sales order software. The diagram has five states: PLACED, IN PRODUCTION, SHIPPED, INVOICED, and CANCELLED. The diagram has nine transitions: PLACED to IN PRODUCTION, PLACED to CANCELLED, IN PRODUCTION to SHIPPED, IN PRODUCTION to CANCELLED, SHIPPED to INVOICED, SHIPPED to CANCELLED, INVOICED to CANCELLED, CANCELLED to PLACED, and CANCELLED to IN PRODUCTION. Option C covers all nine transitions in the following sequence:

• IN PRODUCTION -> SHIPPED
• SHIPPED -> INVOICED
• INVOICED -> CANCELLED
• CANCELLED -> PLACED
• PLACED -> IN PRODUCTION

Option A covers only six transitions in the following sequence:

• PLACED -> CANCELLED
• CANCELLED -> PLACED
• PLACED -> IN PRODUCTION
• IN PRODUCTION -> CANCELLED

Option B covers only five transitions in the following sequence:

• PLACED -> IN PRODUCTION
• IN PRODUCTION -> SHIPPED
• SHIPPED -> CANCELLED
• CANCELLED -> PLACED

Option D covers only four transitions in the following sequence:

• IN PRODUCTION -> CANCELLED
• CANCELLED -> PLACED
• PLACED -> IN PRODUCTION

Therefore, option C is the correct answer. Options A, B, and D are incorrect, as they do not cover all the transitions in the model. References: 1, Section 4.2.2

Statement coverage is a white-box test technique which focuses on the percentage of executable statements that has been executed by a test suite. This is the best description of statement coverage, as it measures how many statements in the source code have been covered by one or more test cases. Option A is incorrect, as it describes state transition testing, which is a black-box test technique that uses a state table to derive test cases. Option B is incorrect, as it describes error guessing, which is an experience-based test technique in which test cases are based on the tester’s knowledge of past failures. Option D is incorrect, as it describes decision coverage, which is a white-box test technique that covers the decision results which determine the next statement to be executed.

References: , Section 4.2.2