Talend Core Certified Developer Exam Questions and Answers
Which Action on table operations are supported by a tMysqlOutput component? Choose 3 answers.
Options:
Drop table
Drop table if exists and create
Replace
Create table if does not exist
Create table
Answer:
B, D, EExplanation:
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.
You created a Job to process a customer database. Next, you want to debug the Job using Traces Debug and pause the execution when it encounters any records for customers residing in the state of California.
Options:
Add a breakpoint in the Advanced Settings tab of the Run view.
Open the Debug Run tab of the Run view and click Traces Debug.
Right-click the trace on the output of the input component and select Add Breakpoint.
Right-click the trace on the output of the input component and select Show Breakpoint Setup.
Answer:
DExplanation:
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]
You need to create a centralized metadata connection to a database server for an application. Which steps should you take before building a Job that reads from that database? Choose 3 answers.
Options:
Add a tCreateTable component to create a table in the database.
Add a tMap component to handle and convert Db Types.
Create Db Connections metadata to describe the database connection.
Drag the Db Connections metadata onto the Designer to read from the database component.
Retrieve the schemas from the database connection.
Answer:
C, D, EExplanation:
Comprehensive and Detailed Explanation:
To establish a centralized metadata connection to a database server in Talend Studio, follow these steps before constructing a Job that reads from the database:
Create Db Connections Metadata to Describe the Database Connection (Option C):
In the Repository panel, right-click on "Metadata" and select "Create connection."
Fill in the necessary details such as database type, host, port, database name, username, and password.
Test the connection to ensure it is configured correctly.
Save the connection metadata for reuse across multiple Jobs.
Retrieve the Schemas from the Database Connection (Option E):
After creating the database connection metadata, expand it to view the available schemas.
Retrieve the required schemas by importing the table structures.
This step ensures that the schema definitions are centralized and can be reused in different Jobs.
Drag the Db Connections Metadata onto the Designer to Read from the Database Component (Option D):
In the Repository, locate the previously created database connection metadata.
Drag and drop the desired table or schema onto the Designer workspace.
Talend Studio will automatically create the appropriate input component (e.g., tDBInput) configured with the connection and schema details.
By following these steps, you ensure a centralized and consistent approach to managing database connections and schemas, promoting reusability and reducing configuration errors.
Which actions can you perform in the configuration panel in Pipeline Designer? Choose 2 answers.
Options:
Modify processor values.
Display and update dataset connections.
Preview changes made by processors.
Select the settings for a pipeline export.
Answer:
A, BExplanation:
Comprehensive and Detailed Explanation:
In Talend Pipeline Designer, theconfiguration panelprovides options for managing and modifying the settings of components within a pipeline.
Modify processor values (Option A):
Users can adjust values for processors such as filters, joins, transformations, and aggregations within the configuration panel.
This helps fine-tune data processing rules directly in the pipeline.
Display and update dataset connections (Option B):
The configuration panel allows users to change dataset connections, updating the source or target locations of data.
Users can modify database credentials, file paths, or API endpoints as needed.
Why not other options?
Option C:The ability to preview changes made by processors is handled in thepreview panel, not the configuration panel.
Option D:Pipeline export settings are managed separately in theexport settings menu, not in the configuration panel.
You want to create a generic schema using a schema defined in a Talend component in the Repository view. How can you accomplish this?
Options:
By right-clicking the component and selecting the Generic schema option.
On the Advanced settings tab of the Component view.
In the Repository, by right-clicking Generic schemas.
In the Schema Editor window for the component.
Answer:
CExplanation:
To create a generic schema from a schema defined in a Talend component, follow these steps:
Open the Repository View:
In Talend Studio, navigate to the Repository panel, typically located on the left side of the interface.
Locate the 'Generic schemas' Node:
Within the Repository, expand the 'Metadata' section to find the 'Generic schemas' node.
Initiate the Generic Schema Creation Process:
Right-click on 'Generic schemas' and select 'Create generic schema' from the context menu.
Define the Schema Properties:
In the schema creation wizard that appears, provide the necessary properties such as 'Name' and 'Description' for the new generic schema.
Set Up the Schema Structure:
Define the schema structure by adding columns and specifying their data types as required.
Finalize the Schema Creation:
Click 'Finish' to complete the creation process. The new generic schema will now be available under the 'Generic schemas' node in the Repository.
This method allows you to create a reusable generic schema that can be applied across multiple components and Jobs within Talend Studio.
You designing a Job that can run in two contexts, Test and Production. You want to run it as a standalone job outside Talend Studio.
How do you accomplish this?
Options:
Build the Job with the Context scripts option selected in the Build Job windows. Before running the Job, edit the script according to the context in which want to run the job.
Set the desired context as the default, then build the Job. Rebuild the Job if you need to run it in a different context.
Build the Job with the Context scripts option selected in the Build Job windows. You will be prompted for the context.
Build the Job with the desired context selected in the Build Job windows. Build a separate copy if you need to run the Job in a different context.
Answer:
DExplanation:
To design a job that can run in two contexts, Test and Production, and run it as a standalone job outside Talend Studio, you need to do the following steps:
Define the context variables and values for each context in the Contexts tab of your job. A context variable is a variable that can store a value that can be changed at runtime or between different contexts. You can use context variables to parameterize the properties or expressions of your job components.
Build the job with the desired context selected in the Build Job window. You can access this option by right-clicking on your job in the Repository tree view and selecting Build Job. This will open a dialog box where you can configure the build settings, such as destination folder, archive name, context, etc. You need to select the context that you want to use for your job execution from the drop-down menu.
Extract the content of the archive file that contains your job executable files and libraries. The archive file also contains two executable files: a batch file (.bat) for Windows platforms and a shell script (.sh) for Linux platforms. You need to run the appropriate file for your platform by double-clicking on it or using a command line tool. This will launch the job and display its output in a console window.
If you need to run the job in a different context, you need to build a separate copy of the job with the other context selected in the Build Job window. You cannot change the context of an already built job without rebuilding it.
You do not need to build the job with the Context scripts option selected in the Build Job window, edit the script according to the context in which you want to run the job, set the desired context as the default, rebuild the job if you need to run it in a different context, or be prompted for the context. These methods are not correct or available in Talend Studio and may cause errors or unexpected results. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Build Job - 7.3], [Contexts - 7.3]
How do you create an empty Joblet?
Options:
Create an empty Job, then export it as a Joblet by right-clicking it in the Repository.
Create an empty Jon and use the file menu to save it as Joblet.
Right-click Joblet Designs the Repository and select Create Joblet.
Right-clicking a space in the Designer and select refactor to Joblect.
Answer:
CExplanation:
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]
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?
Options:
Convert Response To XML Document
Convert Response To JSON Document
Convert Response To DOM Document
Convert Response To HTML Document
Answer:
CExplanation:
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.
Which methods can you use to name an output row in a tMap component? Choose 3 answers.
Options:
Click the name of the table in the Map Editor window and edit it.
Assign the name when defining a new output table in the Map Editor window.
Select the output row, then open the Component view and click the View tab.
Assign the name when connecting a new output component.
Double-click the output row in the Designer and enter a new name.
Answer:
A, B, DExplanation:
In a tMap component, naming an output row correctly helps in managing data flow efficiently. The correct methods are:
A. Click the name of the table in the Map Editor window and edit it.
Open tMap, locate the output table, and click its name to edit it directly.
B. Assign the name when defining a new output table in the Map Editor window.
When adding a new output table, you can name it immediately in the Map Editor.
D. Assign the name when connecting a new output component.
When you connect an output component to tMap, you can assign a custom row name.
Which methods can you use to specify the schema in a tFileInputDelimited component? Choose 3 answers.
Options:
Add the component, open the Component view, select the Built-in schema type, then click the Edit schema button.
Drag a generic schema metadata item onto the Designer.
Add the component, then drag and drop a generic schema metadata item onto the component.
Add the schema to the component using the Schema Editor.
Drag a File delimited metadata item from the Repository onto the design workspace.
Answer:
A, C, EExplanation:
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.
You need to call a different Job within a Job you are developing.
Which mechanism allows you to pass the parameters to the lob you want to call?
Options:
Context parameters
File
CommandLine options
Java Function paramters
Answer:
AExplanation:
To call a different job within a job you are developing, you can use the tRunJob component. This component allows you to execute another job as a subjob within a parent job. To pass the parameters to the job you want to call, you can use the context parameters. Context parameters are variables that can store values that can be changed at runtime or between different contexts. You can define context parameters in the Contexts tab of your job and assign them values for each context. You can also pass context parameters from the parent job to the child job by using the Context Param tab of the tRunJob component. This way, you can parameterize the properties or expressions of the child job with the values from the parent job.
You do not need to use a file, command line options, or Java function parameters to pass parameters to a different job. These methods are not supported by Talend Studio and may cause errors or unexpected results. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [tRunJob properties - 7.3], [Contexts - 7.3]
Which capabilities does Traces Debug provide?
Choose 2 answers
Options:
Filtering which data is propagated by a flow
Advancing one column at a time
Breaking on a selected line of code
Breaking when an input column fulfills a condition
Advancing one row at a time
Answer:
D, EExplanation:
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.
The capabilities that Trace Debug mode provides are:
Breaking when an input column fulfills a condition. You can set breakpoints on traces based on a condition or an expression that involves input data columns. For example, you can set a breakpoint to pause your job when a customer name contains a certain string or when a product price exceeds a certain value. To set a breakpoint based on a condition, you need to right-click on a trace on your jobdesign workspace and select Show Breakpoint Setup option. This will open a dialog box where you can enter a condition or an expression for your breakpoint.
Advancing one row at a time. You can advance the execution of your job one row at a time by using the Step Over button in the toolbar of the Run view. This will allow you to see how each row is processed by your job components and how it affects the output data.
The capabilities that Trace Debug mode does not provide are:
Filtering which data is propagated by a flow. You cannot filter which data is propagated by a flow in Trace Debug mode. A flow is a link that shows the data transfer between components in your job design workspace. In Trace Debug mode, you can see the data flow on each trace and inspect the values of each column for each row processed by your job. However, you cannot change which rows are propagated by a flow based on a condition or an expression.
Advancing one column at a time. You cannot advance the execution of your job one column at a time in Trace Debug mode. You can only advance the execution of your job one row at a time by using the Step Over button in the toolbar of the Run view. This will allow you to see how each row is processed by your job components and how it affects the output data. However, you cannot see how each column is processed by your job components and how it affects the output data.
Breaking on a selected line of code. You cannot break on a selected line of code in Trace Debug mode. You can only break on a trace based on a condition or an expression that involves input data columns. To break on a selected line of code, you need to use Java Debug mode. Java Debug mode allows you to debug your job code in Java or Perl and see the values of each variable or expression in your code. You can access this mode by switching to the Java perspective and clicking on the Debug button in the toolbar of the Code view. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Trace Debug mode - 7.3], [Java Debug mode - 7.3]
You create a Job consisting of two subJobs, A and B. You added Joblet C with the intension of running it between A and B.
What are the minimum requirements to orchestrate this? (Choose Two)
Options:
Add TRIGGER_INPUT and TRIGGER_OUTPUT components into A.
Link A, B and C using On Subject Ok triggers.
Add TRIGGER_INPUT and TRIGGER_OUTPUT components into B.
Add TRIGGER_INPUT and TRIGGER_OUTPUT components into C
Answer:
B, DExplanation:
To create a job consisting of two subjobs, A and B, and add a Joblet C with the intention of running it between A and B, you need to do the following steps:
Design subjob A by adding components and links to it in the Designer workspace.
Add a Start component to mark the beginning of subjob B and link it to subjob A using an OnSubjobOk trigger.
Design subjob B by adding components and links to it after the Start component in the Designer workspace.
Add a tJobletTriggerInput component to your Joblet C design and link it to other components in your Joblet using data flows or triggers.
Add a tJobletTriggerOutput component to your Joblet C design and link it to other components in your Joblet using data flows or triggers.
Drag your Joblet C from the Repository tree view to the Designer workspace between subjob A and subjob B.
Link your Joblet C to subjob A using an OnComponentOk trigger from the last component of subjob A to the tJobletTriggerInput component of your Joblet C.
Link your Joblet C to subjob B using an OnComponentOk trigger from the tJobletTriggerOutput component of your Joblet C to the Start component of subjob B.
The minimum requirements to orchestrate this are adding TRIGGER_INPUT and TRIGGER_OUTPUT components into C and linking A, B, and C using OnSubjobOk triggers. These are generic components that allow you to define triggers for your Joblet without depending on specific components. You do not need to add TRIGGER_INPUT and TRIGGER_OUTPUT components into A or B, as these are regular subjobs that can use any type of components or triggers. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [tJobletTriggerInput properties - 7.3], [tJobletTriggerOutput properties - 7.3], [Joblets - 7.3], [Triggers - 7.3]
Which file should you edit to enable SSL for a JobServer?
Options:
Conf/TalendJobServer.properties
Conf/TalendServer.properties
Conf/server.xml
Jsl_stati64.ini
Answer:
AExplanation:
To enable SSL for a JobServer, you need to edit the conf/TalendJobServer.properties file. A JobServer is a server application that allows you to execute jobs remotely from Talend Studio or Talend Administration Center. The conf/TalendJobServer.properties file contains various configuration parameters for your JobServer, such as port number, log level, security options, etc. To enable SSL for your JobServer, you need to set the sslparameter to true and provide the path and password of your keystore file that contains your SSL certificate.
You do not need to edit conf/TalendServer.properties, conf/server.xml, or jsl_static64.ini files. These files are not related to JobServer configuration or SSL settings. The conf/TalendServer.properties file is used to configure Talend Administration Center settings, such as database connection, LDAP authentication, email notification, etc. The conf/server.xml file is used to configure Tomcat server settings, such as connectors, realms, valves, etc. The jsl_static64.ini file is used to configure Java Service Launcher settings, such as service name, description, startup type, etc. References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Configuring Talend JobServer - 7.3], [Configuring Talend Administration Center - 7.3], [Configuring Tomcat - 7.3], [Installing Java Service Launcher - 7.3]
Which component can be used to read a CSV file in an ESB Route?
Options:
tFileInputDelimited
cMap
cFileInputDelimited
cFile
tMap
Answer:
CExplanation:
Comprehensive and Detailed Explanation:
In Talend's Enterprise Service Bus (ESB) routes, the appropriate component to read a CSV file iscFileInputDelimited. This component is specifically designed for Camel routes to handle delimited files like CSVs.
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?
Options:
Switch to Branch 1, right-click Job 1, select Copy to branch, and select Branch 2.
Switch to Branch 1, copy the Branch 1 job, switch to Branch 2, and paste the job into Branch 2.
Switch to branch 1, copy the Branch 1 Job, switch to Branch 2, and paste the Job into Branch 2.
Switch to Branch 1, copy lob 1, switch to Branch 2, and paste Job 1 over Job 2.
Answer:
AExplanation:
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]
