IBM 000-421 : InfoSphere DataStage v8.5

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IBM InfoSphere DataStage v8.5 Sample Questions:

1. In the job fragment shown in the exhibit, there are two Sort stages: the first (Sort1) sorts the data by state, the second (Sort2) sorts the data by state and area, No repartitioning occurs between the stages.
You have been asked to reduce the number of sorts to improve the performance of the job.

Which two ways might be used to accomplish this without changing how the job functions? (Select two)

A) In the second Sort stage change the Sort Mode property of the area column to "Don't sort, previously sorted.".
B) In the second Sort stage change the Sort Mode property of the state column to "Don't sort, previously sorted.".
C) Remove the first Sort stage. Retain the existing sort keys in the second Sort stage.
D) Remove the second Sort stage. Add area as an additional sort key.

2. Which of the following describes what happens when Runtime Column Propagation is enabled?

A) An input column value flows into a target column based on its position in the input row. For example, first column in the input row goes into the first target column.
B) An input column value flows into a target column only if it is explicitly mapped to it.
C) An input column value flows into a target column based on its position in a Schema file.
D) An input column value flows into a target column only if it matches it by name.

3. In which two situations is it appropriate to use a Sparse Lookup? (Choose two.)

A) When the output of the Lookup stage needs to be hashed partitioned.
B) When accessing DB2 data using the DB2 API stage.
C) When invoking a stored procedure within a database per row in the streaming link.
D) When reference data is significantly larger than the streaming data (100:1).

4. Which two features of Data Sets make them suitable for job restart points? (Choose two.)

A) They are compressed to minimize storage space.
B) They are indexed to improve access.
C) They use the same data types as the parallel framework.
D) They are persistent.

5. You set environment variable $APT_ORACLE_LOAD_OPTIONS=PTIONS(DIRECT=TRUE, PARALLEL=TRUE)?for loading index organized tables.You set environment variable $APT_ORACLE_LOAD_OPTIONS=?PTIONS(DIRECT=TRUE, PARALLEL=TRUE)?for loading index organized tables. Which statement is accurate regarding the resulting effect of this environment variable setting?

A) The Oracle database stage will run in parallel using conventional path mode.
B) The Oracle load will run in parallel using simple direct path mode.
C) Oracle load will fail when executed.
D) Oracle load will run in parallel and bypass DataStage Director.

Solutions: