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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

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

2. Which three DataStage elements allow you to create Shared MetaData? (Select three)

A) Dataset stage
B) DataStage table definition
C) Oracle Connector
D) Sequential file stage
E) DB2 Connector

3. A job validates credit card numbers with a reference file using a Join stage, which is hash partitioned by card number. Examination of Job Monitor reveals that some partitions process many more rows than others. Assuming adequate hardware resources, which action can be used to improve the performance of the job?

A) Alter the number of partitions in the $APT_CONFIG_FILE.
B) Use Round Robin partitioning on the stream and Entire partitioning on the reference.
C) Break the input file into multiple files.
D) Replace the Join with a Merge stage.

4. 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) Use the Count() function over the ColorList field to determine the 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) Specify the following loop condition: @ITERATION <= n, where n is a stage variable initialized with number of loop iterations.
D) Use the @ITERATION variable to determine which color in the ColorList field to extract using the Field function.
E) Use the LastRowInGroup() function to determine when the last color in the color list has been processed.

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

Solutions: