IBM Specialist 000-421

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IBM InfoSphere DataStage v8.5 Sample Questions:

1. What are two advantages of using Runtime Column Propagation (RCP)? (Choose two.)

A) Only columns used in the data flow need to be defined.
B) Only columns that are defined as VarChar need RCP enabled.
C) Sequential files don't require schema files when using RCP.
D) Columns not specifically used in the flow are propagated as if they were.
E) RCP is not a feature of DataStage.

2. A job needs to split a single Data Set into three Data Sets based on conditions that are supplied at runtime. Which stage would allow you to parameterize the conditions for splitting the input data set?

A) Switch stage
B) Transformer stage
C) Filter stage
D) Split Vector stage

3. The given job processes large volumes of data using default partitioning, with sort/partition insertion enabled. Both source Data Sets are partitioned and sorted on the merge key. Assuming that the business logic allows all of the following actions, which design change would improve the performance of this job?

A) Set the "Preserve Partitioning" option on both Data Sets and replace the Merge stage with a Sort Funnel stage.
B) Use the Data Set Management Utility to combine both input Data Sets into a single source Data Set.
C) Before each input to the Merge stage, insert a Sort stage with "Don't Group, Previously Grouped" set on the merge key. Specify SAME partitioning on all inputs.
D) Set the buffer mode to "no buffer" on the output links of both Data Sets.

4. Which two properties can be set to read a fixed width sequential file in parallel? (Choose two.)

A) Set Read Method to "File Pattern".
B) Set the "Read from Multiple Nodes" optional property to a value greater than 1.
C) Set the "Number of Readers Per Node" optional property to a value greater than 1.
D) Set the Execution mode to "Parallel".

5. You write a job control routine to control a sequence of jobs running as a single unit of work. What are three valid job status types you can trap for? (Choose three.)

A) DSJS.START
B) DSJS.RUNOK
C) DSJS.RUNFAILED
D) DSJS.STOPPED
E) DSJS.RUNERROR

Solutions: