200-901 Question #457: Real Exam Question with Answer & Explanation

Question

Drag and Drop Question Drag and drop the first four stages of a DevOps toolchain from the left into the order on the right to create a new complex product. Not all options are used. Answer:

Explanation

The question requires ordering the initial four stages of a DevOps toolchain for a new product, starting from planning, moving through development and build preparation, to comprehensive testing.

Approach. The correct interaction is to drag the activities into the right-hand stages in the following order:

1. Stage 1: Gather requirements and assign development tasks. - This is the foundational planning phase, essential for defining what the product will do and how the work will be distributed.
2. Stage 2: Design, build, and test application code. - After planning, the core development work begins, which includes designing the solution, writing the code, building it into executables, and performing initial unit or developer-level testing.
3. Stage 3: Set necessary properties, files, and dependencies. - Following the initial code build, this stage involves ensuring the application is correctly configured, all required files are present, and dependencies are met. This is crucial for creating a complete, deployable artifact and preparing for integration.
4. Stage 4: Perform acceptance and integration testing and security scans. - Once the application is built and configured with its dependencies, it must undergo more rigorous testing, including integration testing (how components work together), acceptance testing (verifying against requirements), and security scans, before being released or deployed.

Common mistakes.

• common_mistake. Common mistakes include incorrectly ordering the core development activities, placing testing too early or too late, or confusing operational tasks with development lifecycle stages. For example:
• Placing 'Review uptime and performance' early: This is an operational monitoring task that occurs much later, after deployment, and is not one of the first four stages of creating a new product.
• Placing 'Combine code with infrastructure requirements' too early: While Infrastructure as Code (IaC) is part of DevOps, combining code with infrastructure (typically for deployment) generally happens after the application code is developed, built, and thoroughly tested, not within the first four stages of initial product creation.
• Swapping 'Design, build, and test application code' with 'Set necessary properties, files, and dependencies': While 'Set necessary properties...' is part of the build process, 'Design, build, and test application code' represents the broader initial development effort before the more detailed configuration and comprehensive testing.

Concept tested. The underlying technical concept being tested is the understanding of the standard phases and workflow of a DevOps toolchain and software development lifecycle, particularly for initiating a new product. This includes the sequence of planning, coding, building, configuring, and testing phases.

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