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dbt Labs dbt Analytics Engineering Certification Exam Sample Questions (Q23-Q28):
NEW QUESTION # 23
You want to restrict which models can refer to a specific model.
How can this be done?
Choose 1 option.
Answer: D
Explanation:
The correct answer is A: Add model groups and set access to private.
dbt's access control system is designed to restrict which models may reference others purely within the dbt project itself, independent of data warehouse permissions. This system uses model groups and an access property, which can be set to public, protected, or private. Setting a model to private means that only models within the same group are allowed to reference it. Any attempts to reference the model from outside the group will cause a compilation error, enforcing strong boundaries between domains or data products within a dbt project.
Option C (protected) is incorrect because protected allows references from other groups but requires explicit configuration-the intention is stewardship, not restriction. It does not fully restrict referencing.
Option B is incorrect because dbt model access control is not tied to warehouse permissions. Warehouse- level grants cannot control dependency references inside the dbt DAG.
Option D is irrelevant to access control. Versioning does not restrict references; it only manages updates to published models.
Therefore, the only correct way to restrict which models can reference another model is by placing it into a model group and marking it as private, which enforces strict internal usage boundaries.
NEW QUESTION # 24
Which command materializes my_model and only its first-degree parent model(s) in the data platform?
Choose 1 option.
Answer: C
Explanation:
The correct answer is D: dbt run --select +1 my_model.
In dbt's selection syntax, the + operator is used to include parents (upstream) and/or children (downstream) of a given node. When used as +my_model or my_model+, it means "include all ancestors" or "all descendants" respectively, with no limit on depth.
To limit how many levels of parents or children are included, dbt allows a numeric depth between the + and the resource name. +1 my_model (or my_model+1) means:
* Select my_model
* Plus only its first-degree parents (direct dependencies), and no further ancestors.
Because you want to materialize the models, you must use dbt run, not dbt compile. dbt compile only compiles SQL and does not create or update relations in the data platform.
So:
* Option A (dbt run --select +my_model) would include all upstream ancestors, not just first-degree parents.
* Options B and E use compile, so they don't materialize.
* Option C is just syntactically wrong.
Therefore, the only command that both runs models and limits selection to my_model plus its first-degree parents is dbt run --select +1 my_model.
NEW QUESTION # 25
You define a new generic test on model customers in a YAML file:
version: 2
models:
- name: customers
columns:
- name: customer_id
tests:
- unique
- not_null
The next time your project compiles you get this error:
Raw Error:
mapping values are not allowed in this context
in "<unicode string>", line 7, column 21
What is the cause of this error?
Answer: B
Explanation:
This error occurs because the YAML structure is incorrectly indented, causing dbt's parser (and YAML itself) to misinterpret the test definitions. In dbt, generic tests must be declared as a list under the tests: key, but YAML is extremely sensitive to indentation levels. In the faulty YAML, unique and not_null are indented incorrectly relative to the tests: key, which produces the error: "mapping values are not allowed in this context." According to the dbt Testing documentation, valid generic test syntax follows this exact pattern:
columns:
- name: id
tests:
- unique
- not_null
The indentation under tests: must be consistent and aligned so that YAML interprets the items as list elements, not as malformed mappings. When indentation is wrong, YAML attempts to parse list entries as key-value mappings, which leads to the error seen during compilation.
dbt does not require generic test names to be quoted, nor does it expect tests to be a dictionary. The test list format is correct-only the indentation is wrong. Therefore, the root cause is incorrect YAML indentation, making Option D correct.
NEW QUESTION # 26
Given this dbt_project.yml:
name: "jaffle_shop"
version: "1.0.0"
config-version: 2
profile: "snowflake"
model-paths: ["models"]
macro-paths: ["macros"]
snapshot-paths: ["snapshots"]
target-path: "target"
clean-targets:
- "logs"
- "target"
- "dbt_modules"
- "dbt_packages"
models:
jaffle-shop:
+materialized: table
...and this warning when compiling your project:
[WARNING]: Configuration paths exist in your dbt_project.yml file which do not apply to any resources.
There are 1 unused configuration paths:
- models.jaffle-shop
What is the root cause?
A run hook in the jaffle_shop project was defined with an incorrect regular expression.
Answer: A
Explanation:
The true root cause is not related to run hooks or regular expressions. The warning clearly indicates that dbt found a configuration path that does not match any actual model path inside the project. In this case, the config block uses the key models.jaffle-shop, which is incorrect because dbt model paths must match the folder structure and cannot contain hyphens unless the folder itself contains a hyphen. Since the project folder is named jaffle_shop (with an underscore), dbt cannot map the configuration to any model.
dbt evaluates configuration paths based on directory names under the models/ folder. A mismatch between the folder name and the configuration key causes dbt to ignore the configuration entirely. This results in the warning:
"Configuration paths exist in your dbt_project.yml file which do not apply to any resources." This warning is specifically triggered when dbt identifies unused configuration paths due to typos, incorrect nesting, or invalid identifiers. dbt does not interpret hyphens (-) as valid Python identifiers for resource names, so a config path like models.jaffle-shop will never be applied.
Therefore, the assertion that the cause is a "run hook with an incorrect regular expression" is incorrect. The actual root cause is that the configuration path uses the wrong name (jaffle-shop instead of jaffle_shop).
NEW QUESTION # 27
A developer has updated multiple models in their dbt project, materialized as tables and views.
They want to run and test all models upstream and downstream from the modified models that are materialized as views.
What command will achieve this? Choose 1 option.
Answer: E
Explanation:
The requirement is:
* Select all models that have been modified # this uses the state selector:state:modified
* But only those modified models that are materialized as views # this uses the config selector:config.
materialized:view
* Then include upstream and downstream dependencies of those models # this requires adding + around the selectors.
To combine both selectors, dbt uses a comma-separated list within --select, meaning both selectors must match simultaneously.
The correct syntax is:
dbt build --select +state:modified, +config.materialized:view+
This command:
* Finds models whose state is modified.
* Filters them to only those materialized as views.
* Includes upstream (+) and downstream (+) dependencies.
* Runs and tests the selected nodes because dbt build includes running models, tests, seeds, and snapshots.
Why the other options are wrong:
* A and C use invalid selector syntax (config.materialized:view+ must be prefixed with +).
* B only selects modified models but does not filter by materialization type.
* D uses materialized:view, which is invalid without the config. prefix.
Thus, only Option E satisfies all conditions and uses correct dbt selector syntax.
NEW QUESTION # 28
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