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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. Which two statements are true about the usage of scratch disk? (Choose two.)

A) The Sort stage always uses the scratch disk.
B) If "buffer" scratch disk pool is defined, the framework uses this disk pool and the default disk pool.
C) The parallel framework uses the disk space specified in the scratch disk setting to buffer virtual data set records.
D) You can define multiple scratch disk spaces to distribute disk I/O.

2. You would like to run a particular processing job within a job sequence for each weekday of the week. How could you do this? (Select two)

A) Have a parameter set that contains the days of the week you would like to process and routine to parse the days of the week contained in the "day" parameter.
B) Call a routine in the job sequencer that starts the processing job for each day you would like to process.
C) Set the frequency property in the job scheduler to weekdays only.
D) Start Loop and End Loop activity stages on the job sequencer canvas where you loop through the days and pass a value for each day into the job via parameter.

3. Which three of the following options does the dsjob command have? (Choose three.)

A) Specifying an appropriate log file
B) Setting an alias for a job
C) Listing projects, jobs, stages, links, and parameters
D) Stopping a job

4. You are asked to identify the jobs and shared containers that use the ADDRESS column. The Size has changed from 50 to 120 characters in the source system so the jobs must be updated with the new size. What feature of the Designer will locate where a column is used in a DataStage project?

A) Select a Table Definition, then right click and choose Find where column is used. Select the column to search for from the list.
B) From Designer Tools open an Advanced Find dialog. Select Columns from the Type list and enter the column name in the Name To Find field.
C) Open the Table Definition properties, Select the ADDRESS column, then right click and select Find where used.
D) From Designer Tools, open an Advanced Find dialog. Enter the column name in the Name to find field. Select Jobs and Shared Containers from the Type to find list.

5. A customer is complaining of poor performance from the job shown in the exhibit, which aggregates and joins on ZIP code. Currently all partitioning is set to "Auto" and sort/partition insertion is allowed.

What would give the best performance improvement for the job?

A) Hash partition and sort on ZIP code prior to the Copy stage and use entire partitioning on the output of the Aggregator stage.
B) Hash partition and sort on ZIP code prior to the Copy stage, and use same partitioning on the Aggregator and Join stages.
C) Hash partition and sort on ZIP code on the input links to the Aggregator and Join stages.
D) Use same partitioning on all input links in the job; create the input data set by hash-partitioning its input on ZIP code.

Solutions: