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IBM InfoSphere DataStage v8.5 Sample Questions:

1. You are assigned to correct a job from another developer. The job contains 20 stages sourcing data from two Data Sets and many sequential files. The annotation in the job indicates who wrote the job and when, not the objective of the job. All link and stage names use the default names. One of the output columns has an incorrect value which should have been obtained using a lookup. What could the original developer have done to make this task easier for maintenance purposes?

A) Named all stages and links based on what they do.
B) Indicated all stage names within the job annotation.
C) Named all stage and links with column names and ideas.
D) Named all stage and links the same.

2. Which three statements are true about stage variables? (Select three)

A) Stage variables cannot contain NULL values.
B) A derivation for a stage variable can reference stage variables that are later in the execution order.
C) Stage variables are executed before loop variables.
D) Stage variables are executed after constraints but before derivations.
E) Stage variables retain their values between rows in the stage.

3. You are experiencing performance issues for a given job. You are assigned the task of understanding what is happening at run time for that job. What are the first two steps you should take to understand the job performance issues? (Choose two.)

A) Review the objectives of the job.
B) Run job with $APT_TRACE_RUN set to true.
C) Run job with $APT_DUMP_SCORE set to true.
D) Replace Transformer stages with custom operators.

4. You would like to pass values into parameters that will be used in a variety of downstream activity stages within a job sequence. What are three valid ways to do this? (Choose three.)

A) Use environment variables.
B) Use local parameters.
C) Use the UserVariablesActivity Stage to populate the local parameters from an outside source such as a file.
D) Check the "Propagate Parameters" checkbox in the Sequence Job properties.
E) Place a parameter set stage on the job sequence.

5. What would help debug the run-time environment?

A) View detailed runtime stats through Job monitor in Director Client.
B) $APT_VERBOSE
C) $OSH_PRINT_SCHEMAS
D) Check the message filters for the job.

Solutions: