Free Talend Talend-Core-Developer Practice Exam with Questions & Answers | Set: 2

To debug a job using Trace Debug mode and pause the execution when it encounters any records for customers residing in the state of California, you need to right-click on the trace on the output of the input component and select Show Breakpoint Setup option. Trace Debug mode is a feature that allows you to trace each row processed by your job components and see the values of each column in each row. You can access this mode by opening the Debug Run tab of the Run view and clicking on Trace Debug button. A trace is a link that shows the data flow between components in your job design workspace.

The Show Breakpoint Setup option allows you to set a breakpoint on a trace based on a condition or an expression. A breakpoint is a point where the execution of your job pauses and waits for your action. You can use breakpoints to inspect your data or debug your logic at specific points of your job execution. You can access this option by right-clicking on a trace on your job design workspace and selecting Show Breakpoint Setup. This will open a dialog box where you can enter a condition or an expression for your breakpoint.

For example, if you want to pause your job execution when it encounters any records for customers residing in the state of California, you can enter this condition for your breakpoint:

row1.state == “CA”

This will make your job stop at the trace where this condition is met and show you the values of each column for that row.

You do not need to add a breakpoint in Advanced settings tab of Run view, open Debug Run tab of Run view and click Trace Debug button, or right-click on trace on output of input component and select Add Breakpoint option. These options are not used to set breakpoints based on conditions or expressions. The Advanced settings tab of Run viewis used to configure advanced settings for your job execution, such as JVM arguments, statistics parameters, implicit context load parameters, etc. The Debug Run tab of Run view is used to access Trace Debug mode, but not to set breakpoints. The Add Breakpoint option is used to add a simple breakpoint on a trace without any condition or expression. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Trace Debug mode - 7.3], [Breakpoints - 7.3]

Comprehensive and Detailed Explanation:

To manually pair a Remote Engine with Talend Cloud, you can set the pairing key using the following methods:​

In the Remote Engine web service page (Option B):

Access the Remote Engine's web interface, typically available at http://localhost:8043/configuration.​

Enter the pairing key obtained from the Talend Management Console.​

Click onPAIR REMOTE ENGINEto establish the connection.​

In the key configuration file of the engine (Option C):

Locate the preauthorized.key.cfg file in the Remote Engine's etc directory.​

Open the file and paste the pairing key into the remote.engine.pre.authorized.key parameter.​

Save the changes and restart the Remote Engine to apply the configuration.​

Why not other options?

Option A:Setting the pairing key in Talend Studio's preferences is not applicable for pairing a Remote Engine.​

Option D:While it's technically possible to pass the pairing key as a parameter in the engine's run script, it's not the standard or recommended method.​

Comprehensive and Detailed Explanation:

When multiple Jobs require connections to the same database server but with different credentials, the recommended approach is:​

Set the Property Type to Built-in and Set All the Relevant Properties Manually (Option C):

In each tDBInput component, set the 'Property Type' to 'Built-in.'​

Manually enter the connection details, including the specific username and password required for that particular Job.​

This approach ensures that each Job uses its own set of credentials, maintaining the necessary security and access controls.​

Comprehensive and Detailed Explanation:

The tMysqlOutput component in Talend provides several actions on tables to manage data output operations effectively. The supported actions include:​

Drop Table if Exists and Create (Option B):

This action checks if the specified table exists in the database. If it does, the table is dropped and a new one is created. This ensures that the table is recreated fresh for the data load.​

Create Table if Does Not Exist (Option D):

This action checks if the specified table exists in the database. If it does not exist, the table is created. If it already exists, no action is taken, and the existing table is used.​

Create Table (Option E):

This action attempts to create the specified table in the database. If the table already exists, an error will occur unless handled appropriately.​

These actions provide flexibility in managing database tables during data integration processes, allowing for dynamic table creation and management based on the Job's requirements.​

Comprehensive and Detailed Explanation:

To calculate the overall Trust Score™ for multiple customer datasets:​

Use the search bar to filter the customer datasets, and the score will automatically update (Option B):

Filtering datasets using the search functionality aggregates the Trust Scores of the selected datasets, providing an overall score for the group.​

Why not other options?

Option A: Reviewing individual ratings does not provide an aggregated Trust Score™.​

Option C: Marking datasets does not trigger an automatic update of the aggregated score.​

Option D: Manual calculation is unnecessary as the system provides automatic aggregation upon filtering.​

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.​