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IBM InfoSphere DataStage v9.1 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) Indicate all stage names within the job annotation.
B) Name all stage and links with column names and ideas.
C) Name all stages and links based on what they do.
D) Name all stage and links the same.

2. Which Oracle Connector stage property can be set to tune job performance?

A) Partition size
B) Memory size
C) Array size
D) Transaction size

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 step should you take to understand the job performance issues?

A) Run the job with $APT_TRACE_RUN set to true.
B) Replace Join stages by Lookup stages.
C) Run the job with $APT_DUMP_SCORE set to true.
D) Replace Transformer stages with custom operators.

4. A job design consists of an input Sequential Files stage, a Sort stage, followed by a Transformer stage and an output Sequential File stage. In the input Sequential Files stage, the "Number of readers per node" property has been set to 3. The job is run on an SMP machine with a configuration file defined with 3 nodes. The $APT_DISABLE_COMBINATION variable is set to True. How many player processes will this job generate?

A) 12
B) 8
C) 6
D) 10

5. Which option is required to identify a particular job player processes?Which option is required to identify a particular job? player processes?

A) Use the DataStage Director Job administration screen to display active player processes.
B) Set $APT_DUMP_SCORE to true.
C) Set $APT_PM_SHOW_PIDS to true.
D) Log onto the server and issue the command "ps -ef | grep ds".

Solutions: