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IBM 000-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. Which job design technique can be used to give unique names to sequential output files that are used in multi-instance jobs?

A) Generate unique file names by using a macro.
B) Use a Transformer stage variable to generate the name.
C) Use DSJobInvocationID to generate a unique filename.
D) Use parameters to identify file names.

2. You are asked by management to document all jobs written to make future maintenance easier. Which two statements are true about annotations? (Choose two.)

A) The full job description can be identified within the Description Annotation stage.
B) The background for the Description Annotation stage can be changed for each unique stage.
C) The Description Annotation stage can be added several times at different locations to identify business logic.
D) The Description Annotation stage contains both the short and full descriptions for the job.

3. Input rows to a Transformer contain a product name field and a field with a list of colors the product can be ordered with. The colors are separated by the pipe character (|). Here is an example of an input row: "Shirt"| ....| "Red, Blue, Black"|... For each input row, you want to output multiple output rows, one for each color in the list. For the above example input row, three rows are to be output, one per color: "Shirt" ... "Red", "Shirt" ... "Blue", "Shirt" ... "Black".
Which three operations will you need to accomplish this? (Choose three.)

A) Specify the following loop condition: @ITERATION <= n, where n is a stage variable initialized with number of loop iterations.
B) Use the SaveInputRecord() to save the input row for processing in the loop. Use the GetInputRecord() to extract the row for each iteration of the loop.
C) Use the LastRowInGroup() function to determine when the last color in the color list has been processed.
D) Use the Count() function over the ColorList field to determine the number of loop iterations.
E) Use the @ITERATION variable to determine which color in the ColorList field to extract using the Field function.

4. In a Transformer Stage you have a nullable input column that is mapped to a non-nullable output column. What two techniques can be used to handle NULL values? (Choose two.)

A) IF input_column = NULL THEN 'unknown' ELSE input_column.
B) IF input_column = '' THEN 'unknown' ELSE input_column.
C) NullToValue(input_column, 'unknown').
D) IF IsNULL(input_column) THEN 'unknown' ELSE input_column.

5. You are running a DataStage job using a 2-node configuration file. How can a fixed-width single sequential file be read in parallel? (Choose two.)

A) Specify a node constraint for the SequentialFile stage.
B) Set the "Number of Readers per Node" optional property to a value greater than 1.
C) Use an external Source stage.
D) Set the "Read From Multiple Nodes" optional property to a value greater than 1.
E) Set the Execution Mode to the SequentialFile stage to "Parallel".

Solutions: