VALID TALEND-CORE-DEVELOPER TEST FORUM | TALEND-CORE-DEVELOPER DETAIL EXPLANATION

Valid Talend-Core-Developer Test Forum | Talend-Core-Developer Detail Explanation

Valid Talend-Core-Developer Test Forum | Talend-Core-Developer Detail Explanation

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Tags: Valid Talend-Core-Developer Test Forum, Talend-Core-Developer Detail Explanation, Valid Talend-Core-Developer Test Pdf, Exam Talend-Core-Developer Guide Materials, Reliable Talend-Core-Developer Exam Pdf

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Talend-Core-Developer Detail Explanation | Valid Talend-Core-Developer Test Pdf

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Talend Core Certified Developer Exam Sample Questions (Q43-Q48):

NEW QUESTION # 43
Which type of task can be added to a plan in Talend Management Console?

  • A. Data services
  • B. Routes
  • C. Jobs
  • D. Big Data tasks

Answer: C

Explanation:
Comprehensive and Detailed Explanation:
In Talend Management Console (TMC), aplanis a sequence of tasks executed in a defined order. The types of tasks that can be added to a plan include:
* Jobs (Option D):Standard data integration tasks designed in Talend Studio.
* Big Data tasks (Option B):Tasks involving big data processing.
* Routes (Option C):Tasks related to messaging routes.
However,Data services (Option A)refer to web services and are not typically added as tasks within a plan.


NEW QUESTION # 44
Which statements are true when comparing a Joblet to a tRunJob component?
Choose 3 answers

  • A. The performance of tRunJob component is better than running an equivalent Job using a Joblet.
  • B. Building a Joblet typically requires the use of generic input, and trigger component.
  • C. The nested Job called by a tRunJob component cannot use the same context variable of the Job in which it is used.
  • D. The performance of a Joblet if better than running an equivalent Job using a tRunJob component.
  • E. A Joblet uses the same context variables of the Job in which it is used, unlinke a tRunJob component.

Answer: B,C,E

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 # 45
How do you create an empty Joblet?

  • A. Right-click Joblet Designs the Repository and select Create Joblet.
  • B. Create an empty Job, then export it as a Joblet by right-clicking it in the Repository.
  • C. Create an empty Jon and use the file menu to save it as Joblet.
  • D. Right-clicking a space in the Designer and select refactor to Joblect.

Answer: A

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 # 46
Which aspects contribute to the calculation of the validity of a dataset? Choose 2 answers.

  • A. Use of semantic types across the dataset sample
  • B. Number of empty rows across the dataset sample
  • C. Number of valid and invalid values across the dataset sample
  • D. Use of user ratings and certification

Answer: A,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 # 47
Which options can you use to add a Joblet to your talend Job?
Choose 3 answers

  • A. Use a tRunJob component and select the Joblet from the drop-down menu.
  • B. Type the Joblet name on the Studio canvas, then select if from the Palette drop-down menu.
  • C. Right-click the Joblet from Palette and select the Add option.
  • D. Drag the Jobket from the Repository tree view to designer canvas.
  • E. Drag the Joblet from Palette to the design workspace.

Answer: B,D,E

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 # 48
......

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