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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. What three types of links are supported by the Lookup Stage? (Select three)

A) A single input link
B) A reference link
C) A single output link
D) Multiple reject links
E) Multiple Input Links

2. Which statement is true about the Web Services Pack?

A) Web Services Pack communicates by Enterprise Java Beans.
B) Web Services Pack generates a WSDL.
C) Web Services Pack is configured from within the Information Services Director application.
D) Web Services Pack makes a service request using SOAP.

3. A job reads from a sequential file using a SequentialFile stage with option "number of readers" set to 2. This data goes to a Transformer stage and then is written to a dataset using the DataSet stage. The default configuration file has three nodes. The environment variable $APT_DISABLE_COMBINATION is set to "True" and partitioning is set to "Auto". How many processes will be created?

A) 7
B) 9
C) 12
D) 5

4. 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) Break the input file into multiple files.
C) Replace the Join with a Merge stage.
D) Use Round Robin partitioning on the stream and Entire partitioning on the reference.

5. To better understand the data flowing through a job, it is desirable to have structural information about the datasets captured in the job log. Which environment variable can provide this information?

A) $OSH_STDOUT_MSG
B) $APT_PM_PLAYER_MEMORY
C) $OSH_PRINT_SCHEMAS
D) $APT_NO_PART_INSERTION

Solutions: