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[General] Don't Waste Time Preparing for Talend Talend-Core-Developer Exam. Crack it Insta

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【General】 Don't Waste Time Preparing for Talend Talend-Core-Developer Exam. Crack it Insta

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Talend Core Certified Developer Exam Sample Questions (Q49-Q54):NEW QUESTION # 49
You need a list of all customers whose first name contains "Tom" and who are older than 18. Which processor should be used?
  • A. Aggregate
  • B. Filter
  • C. Data sampling
  • D. Join
Answer: B
Explanation:
Comprehensive and Detailed Explanation:
To filter customer records based onfirst name containing "Tom"andage greater than 18, theFilter processor is the correct choice.
* TheFilter processorallows users to setconditional rulesto extract only the required data.
* Users can specify conditions such as:
first_name CONTAINS "Tom"
AND
age > 18
* This ensures that only relevant records are included in the output.
Why not other options?
* Option A (Join):Used to combine data from multiple datasets based on a key field, not for filtering.
* Option B (Aggregate):Used for summarizing data, such as calculating counts, sums, or averages.
* Option D (Data Sampling):Used to select a random subset of data, not for filtering based on conditions.

NEW QUESTION # 50
Which aspects contribute to the calculation of the validity of a dataset? Choose 2 answers.
  • A. Use of user ratings and certification
  • B. Use of semantic types across the dataset sample
  • C. Number of valid and invalid values across the dataset sample
  • D. Number of empty rows across the dataset sample
Answer: B,C
Explanation:
Comprehensive and Detailed Explanation:
The validity of a dataset in Talend's Trust Score framework is determined by:
* Number of valid and invalid values across the dataset sample (Option B):
* This metric assesses the quality of the data by evaluating the proportion of valid entries compared to invalid ones. A higher number of valid values indicates better data quality.
* Use of semantic types across the dataset sample (Option C):
* Semantic types help in understanding the meaning and context of data fields. Consistent and correct application of semantic types ensures that data is interpreted accurately, contributing to its validity.
Why not other options?
* Option A: User ratings and certification pertain to the popularity axis, reflecting user trust and endorsement, not the intrinsic validity of the data.
* Option D: The number of empty rows relates to the completeness axis, indicating missing data, rather than directly affecting validity.

NEW QUESTION # 51
You can initialize your component endpoint, API mappings, and documentation from your API definition.
Which API definitions are supported by tRESTRequest?
  • A. XML definition file
  • B. WSDL file
  • C. OAS/Swagger 2.0 file
  • D. CSV definition file
Answer: C
Explanation:
Comprehensive and Detailed Explanation:
ThetRESTRequest componentsupportsOpenAPI Specification (OAS)/Swagger 2.0for initializing component endpoints, API mappings, and documentation.
* OAS/Swagger 2.0 file (Correct Answer - Option D):
* tRESTRequest allows API-first development by importing aSwagger 2.0 (OAS) definition.
* This enables automatic configuration of API endpoints, request parameters, and response structures.
* Why not other options?
* CSV definition file (Option A):Not a valid API definition format.
* XML definition file (Option B):XML files are not standard for REST API definitions.
* WSDL file (Option C):WSDL is used for SOAP-based web services, not REST.

NEW QUESTION # 52
You are collaborating on a project with other developers using talend best practices.
When should you use a tag?
  • A. Denoting a milestone in the lifecycle of a project
  • B. Capturing snapshot of a codebase that requires ongoing maintenance.
  • C. Fixing hugs or enhancements.
  • D. Denoting major or minor releases.
Answer: A
Explanation:
Tags are used to mark specific points in the development lifecycle of a project. This can be done for a variety of reasons, such as:
* To mark the completion of a major feature or release
* To mark the start of a new development phase (e.g., QA, production)
* To mark a known good state of the codebase (e.g., before a risky change) Tags can be used to create branches, which can then be used to develop and test new features or bug fixes.
They can also be used to deploy the codebase to different environments (e.g., development, staging, production).
Examples of when to use a tag:
* When you are ready to release a new version of your application to production.
* When you have completed a major feature or milestone in the development of your application.
* Before making a risky change to your codebase, such as a database migration or refactoring.
* When you need to deploy your application to a different environment, such as staging or production.
Benefits of using tags:
* Tags can help you to keep track of the different versions of your codebase.
* Tags can help you to roll back to a previous version of your codebase if necessary.
* Tags can help you to deploy your codebase to different environments.
* Tags can help you to collaborate with other developers more effectively.

NEW QUESTION # 53
How do you create an empty Joblet?
  • A. Create an empty Job, then export it as a Joblet by right-clicking it in the Repository.
  • B. Right-clicking a space in the Designer and select refactor to Joblect.
  • C. Right-click Joblet Designs the Repository and select Create Joblet.
  • D. Create an empty Jon and use the file menu to save it as Joblet.
Answer: C
Explanation:
To create an empty Joblet, you need to right-click on the Joblet Designs node in the Repository tree view and select Create Joblet option. This will open a dialog box where you can enter the name and description of your Joblet and select an icon for it. You can then design your Joblet by adding components and links to it in the Designer workspace.
You cannot create an empty Joblet by creating an empty job, then exporting it as a Joblet by right-clicking it in the Repository, creating an empty job and using the file menu to save it as Joblet, or right-clicking a space in the Designer and selecting refactor to Joblet. These methods are not available in Talend Studio and may cause errors or unexpected results. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Joblets - 7.3]

NEW QUESTION # 54
......
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