Free AT0-001 sample questions

Correct answer: A new local variable named `max_age_days` is created within the function, leaving the global variable unchanged.

In Python, assigning a value to a variable inside a function creates a new local variable by default. To modify the global variable, the engineer would need to explicitly declare `global max_age_days` inside the function before assignment.

Correct answer: for

The `for` loop is used in Bash to iterate over a sequence of items, such as the output of a command substitution like `$(cat servers.txt)`. A `while read` loop is another valid approach, but the syntax provided specifically matches the `for` loop structure.

Correct answers: Using parentheses immediately following the function name declaration.; Using the `Param()` block inside the function body.

PowerShell also allows defining parameters in parentheses immediately after the function name, similar to languages like C# or Python (e.g., `function My-Func($param1) { }`).

In PowerShell, you can define parameters using the `Param()` block directly inside the function's curly braces. This is a best practice for advanced functions.

Correct answer: Use the `unittest.mock` library to patch the HTTP request functions and return simulated API responses.

Mocking is the standard practice for testing code that interacts with external systems. By using a library like `unittest.mock` (specifically `@patch`), the team can simulate the API's responses (success, timeout, error codes) without making actual network calls, ensuring the script's logic is fully tested safely.

Correct answer: git commit

The `git commit` command saves a snapshot of the staged changes to the local repository history. Because `git push` is not used, the changes remain local and are not shared with the remote repository.

Correct answer: False

False. Semantic Versioning uses a MAJOR.MINOR.PATCH format. Backwards-incompatible changes require incrementing the MAJOR version. The MINOR version is incremented when functionality is added in a backwards-compatible manner.

Correct answer: Branch from `main` to create a `hotfix` branch. Fix the issue, merge the `hotfix` branch directly into `main`, and then merge the `hotfix` branch into `develop`.

In GitFlow, a `hotfix` branch is created directly from `main` to address critical production bugs immediately. Once fixed, the hotfix must be merged back into `main` (and tagged with an updated version) and also merged into `develop` to ensure the fix is included in future releases without pulling unfinished features into production. flowchart LR Main((main)) --> Hotfix([hotfix]) Hotfix -->|Merge| Main Hotfix -->|Merge| Develop((develop))

Correct answer: git pull --rebase

The `git pull --rebase` command fetches the remote changes and rebases the local branch's commits on top of them. This rewrites the commit history to be linear, avoiding the creation of an extraneous merge commit.

Correct answer: Idempotency

Idempotency in IaC means that applying a configuration multiple times results in the same outcome as applying it once. The tool checks the current state and only makes changes necessary to achieve the desired state, preventing duplicate resource creation.

Correct answer: Immutability

Immutability dictates that infrastructure components are never modified after they are deployed. Instead of updating existing servers (mutable infrastructure), changes are made by replacing the old components entirely with new ones. This eliminates configuration drift.