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Authorized Talend Talend-Core-Developer Exam Dumps, Talend-Core-Developer Valid

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Authorized Talend Talend-Core-Developer Exam Dumps, Talend-Core-Developer Valid

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Talend Core Certified Developer Exam Sample Questions (Q44-Q49):NEW QUESTION # 44
Which options can you use to add a Joblet to your talend Job?
Choose 3 answers
  • A. Drag the Jobket from the Repository tree view to designer canvas.
  • B. Type the Joblet name on the Studio canvas, then select if from the Palette drop-down menu.
  • C. Use a tRunJob component and select the Joblet from the drop-down menu.
  • D. Drag the Joblet from Palette to the design workspace.
  • E. Right-click the Joblet from Palette and select the Add option.
Answer: A,B,D
Explanation:
To add a Joblet to your Talend Job, you can use one of these options:
* Type the Joblet name on the Studio canvas, then select it from the Palette drop-down menu. This will create a Joblet container on your canvas that contains all the components and links of your Joblet.
* Drag the Joblet from Repository tree view to designer canvas. This will also create a Joblet container on your canvas that contains all components and links of your Joblet.
* Drag Joblet from Palette to design workspace. This will open a dialog box where you can select an existing Joblet from Repository or create a new one.
You cannot use a tRunJob component and select Joblet from drop-down menu, nor right-click Joblet from Palette and select Add option. 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 # 45
You need to set up a server in your Talend environment that enables several members of your team to collaborate on a project.
Which application must you enable before working on a remote project?
  • A. Git or SVN client must be installed on each developed workstation.
  • B. Talent Administration Center instance must be running with the team members and project configured.
  • C. Talend admission Center service must be running on each development workstation.
  • D. Git or SVN server instance must be running.
Answer: B,D
Explanation:
To set up a server in your Talend environment that enables several members of your team to collaborate on a project, you need to enable two applications before working ona remote project: Git or SVN server instance and Talend Administration Center instance. These applications are used to manage version control and collaboration for your project.
Git or SVN server instance is a server application that allows you to store and track changes of your project files using a version control system. Git and SVN are two popular version control systems that are supported by Talend Studio. You need to have a Git or SVN server instance running and accessible by your team members before working on a remote project. You also need to have a Git or SVN client installed on each development workstation to connect to the server and perform version control operations.
Talend Administration Center is a web-based application that allows you to manage users, projects, tasks, execution servers, and licenses for your Talend environment. You need to have a Talend Administration Center instance running and accessible by your team members before working on a remote project. You also need to configure the team members and project settings in Talend Administration Center to grant access and permissions for your project. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Version control - 7.3], [Talend Administration Center - 7.3]

NEW QUESTION # 46
Which statements are true when comparing a Joblet to a tRunJob component?
Choose 3 answers
  • A. The nested Job called by a tRunJob component cannot use the same context variable of the Job in which it is used.
  • B. The performance of tRunJob component is better than running an equivalent Job using a Joblet.
  • C. A Joblet uses the same context variables of the Job in which it is used, unlinke a tRunJob component.
  • D. Building a Joblet typically requires the use of generic input, and trigger component.
  • E. The performance of a Joblet if better than running an equivalent Job using a tRunJob component.
Answer: A,C,D
Explanation:
A Joblet is a reusable piece of a job that can be used in multiple jobs as a single component. A tRunJob component is a component that allows you to call another job as a subjob within a parent job. When comparing a Joblet to a tRunJob component, these statements are true:
* A Joblet uses the same context variables of the job in which it is used, unlike a tRunJob component. A context variable is a variable that can store a value that can be changed at runtime or between different contexts. A Joblet inherits the context variables from the job that contains it and does not have its own context variables. A tRunJob component can pass context variables from the parent job to the child job, or use a specific context for the child job.
* Building a Joblet typically requires the use of generic input and trigger components. A Joblet can have one or more input and output flows that connect it with other components in a job. To create these flows, you need to use generic input and trigger components, such as tJobletInput, tJobletOutput, tJobletTriggerInput, and tJobletTriggerOutput. These components allow you todefine schemas and triggers for your Joblet without depending on specific components.
* The nested job called by a tRunJob component cannot use the same context variables of the job in which it is used. A nested job is a job that is called by another job using a tRunJob component. A nested job can have its own context variables or receive context variables from its parent job, but it cannot use the same context variables as its parent job. This means that if you have two context variables with the same name in both jobs, they will be treated as separate variables and will not share values.
These statements are false when comparing a Joblet to a tRunJob component:
* The performance of tRunJob component is better than running an equivalent job using a Joblet. The performance of a Joblet is better than running an equivalent job using a tRunJob component. This is because a Joblet is integrated into the main code of the job and does not require launching another JVM process or loading another metadata object like a tRunJob component does. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Joblets - 7.3], [tRunJob properties - 7.3],
[Contexts - 7.3]

NEW QUESTION # 47
Which methods can you use to specify the schema in a tFileInputDelimited component? Choose 3 answers.
  • A. Add the schema to the component using the Schema Editor.
  • B. Add the component, open the Component view, select the Built-in schema type, then click the Edit schema button.
  • C. Drag a File delimited metadata item from the Repository onto the design workspace.
  • D. Drag a generic schema metadata item onto the Designer.
  • E. Add the component, then drag and drop a generic schema metadata item onto the component.
Answer: B,C,E
Explanation:
In Talend Studio, there are multiple methods to specify the schema for a tFileInputDelimited component. The three primary approaches include:
A: Add the component, open the Component view, select the Built-in schema type, then click the Edit schema button.
* Process:
* Add the Component:
* Drag and drop the tFileInputDelimited component onto the design workspace.
* Access Component View:
* Click on the component to open its Basic settings in the Component view.
* Select Built-in Schema Type:
* Under the 'Schema' section, choose 'Built-In' from the 'Property Type' dropdown menu.
* Edit Schema:
* Click the 'Edit schema' button to define the schema structure by adding columns and specifying their data types.

NEW QUESTION # 48
In some instances, after applying changes to a component schema, you are asked if you would like to propagate the changes. What is the significance of thisprompt?
  • A. Confirm that you want to apply the schema changes to both the previous and next components in the Job.
  • B. Confirm that you want to apply the schema changes to the previous component in the Job.
  • C. Confirm that you want to apply the schema changes to the next component in the Job.
  • D. Confirm that you want to apply the schema changes to the selected component.
Answer: C
Explanation:
When you modify the schema of a component in Talend Studio, the application prompts you to propagate these changes. This propagation ensures that any alterations to the data structure are consistently applied throughout the Job, maintaining data integrity and coherence.
Understanding Schema Propagation:
* Purpose:Schema propagation is essential to synchronize the data structure across connected components. When a schema changes (e.g., adding or removing a column), downstream components that rely on this schema need to be updated to reflect these changes.
* Prompt Significance:The prompt serves as a confirmation to apply the schema changes to the subsequent components in the Job. By agreeing to propagate, Talend Studio automatically updates the schemas of all downstream components connected to the modified component.
Example Scenario:
Consider a Job where a tFileInputDelimited component reads data and passes it to a tMap component, which then outputs to a tFileOutputDelimited component. If you add a new column to the schema of tFileInputDelimited:
* Modification:
* You add a new column, 'emailAddress', to the tFileInputDelimited schema.
* Propagation Prompt:
* Upon making this change, Talend Studio prompts you to propagate the schema changes.
* Effect of Propagation:
* By confirming, the 'emailAddress' column is added to the schemas of all downstream components (e.g., tMap and tFileOutputDelimited). This ensures that these components recognize and can process the new column appropriately.
By understanding and utilizing schema propagation, you ensure that all components within your Talend Jobs remain synchronized, reducing errors and enhancing data processing efficiency.

NEW QUESTION # 49
......
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