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Talend Core Certified Developer Exam Sample Questions (Q44-Q49):

NEW QUESTION # 44
Which concepts are a part of Pipeline Designer? Choose 3 answers.

A. Context variables
B. Connection
C. Dataset
D. Processor
E. Preparations

Answer: B,C,D

Explanation:
Comprehensive and Detailed Explanation:
Talend's Pipeline Designer is a tool that enables users to design and execute data integration workflows. Key components of Pipeline Designer include:
* Connection (Option C):
* Defines the link between Pipeline Designer and various data sources or destinations, specifying how to access and interact with external systems.
* Dataset (Option D):
* Represents the structured data that flows through the pipeline, serving as the input or output of various processing steps.
* Processor (Option E):
* Performs specific operations on the data within the pipeline, such as transformations, aggregations, or filtering, to achieve the desired data processing outcomes.
Why not other options?
* Option A:While context variables are used in Talend Studio for parameterizing jobs, they are not a primary concept in Pipeline Designer.
* Option B:"Preparations" refer to data transformation sequences in Talend Data Preparation, not directly in Pipeline Designer.

NEW QUESTION # 45
You have two branches: Branch1 contains Job1, and Branch 2 contains Job 2. You want to copy Job1 to Branch 2 and preserve the change history when connecting Studio to Talend Administrator Center.
Which method should you use to preserve the change history?

A. Switch to Branch 1, copy lob 1, switch to Branch 2, and paste Job 1 over Job 2.
B. Switch to Branch 1, copy the Branch 1 job, switch to Branch 2, and paste the job into Branch 2.
C. Switch to Branch 1, right-click Job 1, select Copy to branch, and select Branch 2.
D. Switch to branch 1, copy the Branch 1 Job, switch to Branch 2, and paste the Job into Branch 2.

Answer: C

Explanation:
To copy Job1 from Branch1 to Branch2 and preserve the change history when connecting Studio to Talend Administration Center, you need to use the Copy to branch option. This option allows you to copy a job or a folder from one branch to another branch in the same project without losing the version history. You can access this option by switching to Branch1, right-clicking on Job1 in the Repository tree view, and selecting Copy to branch. This will open a dialog box where you can select Branch2 as the target branch and confirm the copy operation.
You do not need to use the import items, create standard job, or paste over options. These options are not used to copy jobs between branches and preserve the change history. The import items option is used to import items (such as jobs, metadata, routines, etc.) from an archive file that can be exported from another project or workspace. The create standard job option is used to create a new job with a name and a description. The paste over option is used to overwrite an existing job with another job that has been copied or cut from the same or another project. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Copy to branch - 7.3]

NEW QUESTION # 46
You have a MySQL table named customers with columns named id, name, address, and country. You need to retrieve records that have a specific country based on a variable. Which steps should you use to achieve this?

A. Use a tDBInput component with a context variable in the SQL query.
B. Use a tDBInput component and link it to a tMatchGroup component.
C. Use a tDBInput component and link it to a tFilterColumns component.
D. Use a tDBInput component with a Run if trigger.

Answer: A

Explanation:
Comprehensive and Detailed Explanation:
To filter records based on a specific country dynamically, the best approach isusing a tDBInput component with a context variable in the SQL query (Option A).
Step-by-Step Process:
* Define a Context Variable:
* In theContext Variablessection of Talend Studio, create a new variable (context.country) and set its value dynamically.
* Configure tDBInput:
* Drag and drop the tDBInput component onto theDesigner.
* Set up thedatabase connectionusing either Built-in or Repository mode.
* In theQuery field, write:
SELECT id, name, address, country FROM customers WHERE country = '" + context.country + "'
* Execute the Job:
* The Job will retrieveonly those records where the country column matches the value of the context variable.
* The value of context.country can be modified at runtime, making the querydynamic.
Why not other options?
* tMatchGroup (Option B):Used for record deduplication, not filtering.
* Run if Trigger (Option C):Controls execution flow but does not filter records inside tDBInput.
* tFilterColumns (Option D):Removes unwanted columns but does not filter records based on conditions.

NEW QUESTION # 47
Whatare the key capabilities of Talend Cloud Data Preparation that improve data quality and accessibility?
Choose 2 answers

A. Standardize data
B. Discover
C. Cleanse data
D. Transform

Answer: A,C

NEW QUESTION # 48
You are using a tRESTClient component to call a REST service. Which advanced option should you use to convert the response from the server to the document type?

A. Convert Response To HTML Document
B. Convert Response To JSON Document
C. Convert Response To XML Document
D. Convert Response To DOM Document

Answer: D

Explanation:
Comprehensive and Detailed Explanation:
In Talend Studio, the tRESTClient component includes an advanced setting called"Convert Response To DOM Document". When this option is selected, the response from the REST service is converted into a DOM (Document Object Model) document. This allows for structured processing of the response data within Talend workflows.

NEW QUESTION # 49
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