Talend TALEND-TDICD Online Practice Questions and Exam Preparation

Talend TALEND-TDICD Online Questions & Answers

• Question 11:

  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?

  A. Context parameters
  B. File
  C. CommandLine options
  D. Java Function paramters
  A. Context parameters

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  Explanation

  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]

• Question 12:

  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 server instance must be running.
  B. Talent Administration Center instance must be running with the team members and project configured.
  C. Git or SVN client must be installed on each developed workstation.
  D. Talend admission Center service must be running on each development workstation.
  A. Git or SVN server instance must be running.
  B. Talent Administration Center instance must be running with the team members and project configured.

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  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 on a 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]

• Question 13:

  Which characteristics distinguish Traces Debug from Java Debug?

  Choose 2 answers

  A. Allow row-by-row inspection of data flows
  B. Requires a separate perspective
  C. Require Java development experiences
  D. Supports breakpoints based on input data condition
  A. Allow row-by-row inspection of data flows
  D. Supports breakpoints based on input data condition

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  Explanation

  Trace Debug and Java Debug are two modes that allow you to debug your jobs in Talend Studio. Trace Debug mode allows you to trace each row processed by your job components and see the values of each column in each row. 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. The characteristics that distinguish Trace Debug from Java Debug are: Trace Debug mode allows row-by-row inspection of data flows, while Java Debug mode does not. Data flows are the links that show 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. You can also use filters to display only the rows that match a condition or an expression. In Java Debug mode, you cannot see the data flow on each trace or inspect the values of each column for each row. Trace Debug mode supports breakpoints based on input data condition, while Java Debug mode does not. Breakpoints are points 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. In Trace Debug mode, 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. In Java Debug mode, you can only set breakpoints on lines of code based on a condition or an expression that involves variables or expressions. The characteristics that do not distinguish Trace Debug from Java Debug are: Both modes require a separate perspective. A perspective is a set of views and editors that are arranged in a specific way to support a specific task. In Talend Studio, you can switch between different perspectives, such as Integration, Debug, Profiling, etc. To use Trace Debug mode, you need to switch to the Debug perspective by clicking on the Open Perspective button and selecting Debug. To use Java Debug mode, you need to switch to the Java perspective by clicking on the Open Perspective button and selecting Java. Neither mode requires Java development experience. Although Java Debug mode allows you to debug your job code in Java or Perl, you do not need to have Java development experience to use it. You can use the graphical interface of Talend Studio to design your job components and properties without writing any code. You can also use the Code view to see the generated code of your job in Java or Perl and modify it if needed. However, you do not need to write any code from scratch or understand all the details of the code to use Java Debug mode.

  References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Trace Debug mode - 7.3], [Java Debug mode - 7.3]

• Question 14:

  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 this prompt?

  A. Confirm Out you want to apply the schema, changes to the previous component in the Job.
  B. Confirm That you want to apply the schema changes to the selected component.
  C. Confirm that you want to apply the schema changes to both the previous and next components in the Job.
  D. 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 next component in the Job.

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  Explanation

  In some instances, after applying changes to a component schema, you are asked if you would like to propagate the changes. This prompt is significant because it allows you to confirm that you want to apply the schema changes to the next component in the Job. This can save you time and effort by automatically updating the schema of the downstream component, instead of manually editing it. However, you should be careful when propagating changes, as it may overwrite existing schemas or cause errors in the Job logic. You can also choose to cancel the propagation and edit the schema manually.

• Question 15:

  You want to use the value of a context variable you defined to configure a component, but you do not remember the exact name. You decide to use the auto-completion feature in Talend Studio Studio to get assistance.

  Which keystrokes can you use to trigger auto-completion?

  A. Fsc + Space
  B. Ctrl + Alt + Space
  C. Ctrl + Space
  D. Alt - Space
  C. Ctrl + Space

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  Explanation

  To trigger auto-completion in Talend Studio, you can use the keystrokes Ctrl + Space. This will display a list of possible suggestions based on what you have typed so far. For example, if you type context. and press Ctrl + Space, you will see a list of all the context variables you have defined. You can then select the one you want from the list or continue typing to narrow down the choices. Auto-completion can help you avoid typing errors and save time when configuring components or writing expressions.

  References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend

• Question 16:

  Which tab provides lines of code generated for the selected component in Telend Studio?

  A. Jobscript tab
  B. Code viewer tab
  C. Run consult
  D. Outline tab
  B. Code viewer tab

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  Explanation

  The code viewer tab in Talend Studio provides lines of code generated for the selected component in a Job. It shows the code in the language of the component, such as Java or Perl. The code viewer tab allows the user to view and edit the code, as well as copy and paste it to another editor. The code viewer tab also displays errors and warnings related to the code.

  References: Code viewer tab

• Question 17:

  What is the generic Input component used for in a Joblet design?

  A. Triggering a Joblet
  B. Triggering a subJob
  C. Carrying data into a Joblet
  D. Carrying data into a subJob
  C. Carrying data into a Joblet

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  Explanation

  The generic Input component used for in a Joblet design is the tJobletInput component. This component is used to carry data into a Joblet from another component in the job that contains the Joblet. A Joblet is a reusable piece of a job that can be used in multiple jobs as a single component. 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 output components, such as tJobletInput, tJobletOutput, tJobletTriggerInput, and tJobletTriggerOutput. These components allow you to define schemas and triggers for your Joblet without depending on specific components. The tJobletInput component is not used for triggering a Joblet, triggering a subjob, or carrying data into a subjob. These are different concepts and functionalities in Talend Studio. A trigger is a link that activates a subjob or a component based on a condition or an event. A subjob is a part of a job that consists of one or more components connected by data flows or triggers. A subjob can be triggered by another subjob using triggers such as OnSubjobOk, OnSubjobError, Run if, etc. A subjob can also carry data into another subjob using data flows such as main, lookup, reject, etc.

  References: Talend Open Studio: Open- source ETL and Free Data Integration | Talend, [tJobletInput properties - 7.3], [Joblets - 7.3], [Triggers - 7.3]

• Question 18:

  You are building a Job that consists of two subJobs being sequentially executedI he first subJob completes successfully.

  Which component in the first subJob triggers the execution of the second subJob?

  A. Start component
  B. Final component
  C. Input component
  D. Any component
  A. Start component

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  Explanation

  The Start component in a subjob triggers the execution of the next subjob in a sequential order. The Start component is used to define where a subjob begins and to link it with other subjobs within a job. The Start component has only one output link that can be connected to any other component in the same subjob or to another Start component in another subjob. When a subjob completes successfully, it sends an OnSubjobOk trigger to its Start component, which then activates the next subjob linked to it. The Final component, on the other hand, is used to define where a subjob ends and to perform some actions after its completion, such as sending anemail or logging a message. The Final component has no output link and does not trigger any other subjob. The Input component and any other component in a subjob do not trigger any other subjob by themselves, unless they are connected to a Start component through an output link or an OnComponentOk trigger.

  References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Start properties - 7.3], [Final properties - 7.3]

• Question 19:

  Which templates allow you to create ready-to-run Jobs in Talend Studio?

  Choose2answers

  A. TabletoTable
  B. FileToDatabase.
  C. TahleToFile
  D. JobletToFile
  A. TabletoTable
  C. TahleToFile

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  Explanation

  Talend Studio provides templates that allow you to create ready-to-run Jobs for common scenarios, such as Table to Table, File to Database, Table to File, etc. You can access these templates from the Repository > Job Designs > Create Job from Template menu. Joblet to File is not a valid template name.

• Question 20:

  You have a MySQL table named customers with column named id, address, and country.You need to retrieve records that have a specific 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 with a Run fi trigger.
  C. Use a tDBInput component and link to a tMatchGroup component.
  D. Use a tDBInput component and link it to a tFilterColumns component.
  A. Use a tDBInput component with a context variable in the SQL query.

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  Explanation

  To retrieve records that have a specific value based on a variable, you can use a tDBInput component with a context variable in the SQL query. A context variable is a variable that can store a value that can be changed at runtime or between different contexts. A context variable can be used in various components to parameterize their properties or expressions. A tDBInput component is used to read data from a database table by executing an SQL query. You can use a context variable in the SQL query to filter the records based on a dynamic value. For example, if you have a context variable named country that stores the value of the country you want to filter by, you can use it in the SQL query of the tDBInput component as follows: SELECT id, address, country FROM customers WHERE country = `context.country' This will retrieve only the records that have the same value as the context variable country in the country column. You do not need to use a Run if trigger, a tMatchGroup component, or a tFilterColumns component to achieve this. A Run if trigger is used to execute a subjob conditionally based on a logical expression. A tMatchGroup component is used to group similar records based on matching rules and output them as master or duplicate records. A tFilterColumns component is used to select or remove columns from an input flow based on a list of column names.

  References: Talend Open Studio: Open-source ETL and Free Data Integration | Talend, [Contexts - 7.3], [tDBInput properties - 7.3], [Run if properties - 7.3], [tMatchGroup properties - 7.3], [tFilterColumns properties - 7.3]