IBM InfoSphere DataStage v8.5 : C2090-421 Exam Questions

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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. You are processing groups of rows in a Transformer. The first row in each group contains "1" in the Flag column and "0" in the remaining rows of the group. At the end of each group you want to sum and output the QTY column values. Which three techniques will enable you to retrieve the sum of the last group? (Choose three.)

A) Within each group sort the Flag column in ascending order. Output the sum each time you process the row with a "1" in the Flag column.
B) Output a running total for each group for each row. Follow the Transformer stage by an Aggregator stage. Take the MAX of the QTY column for each group.
C) Output the sum that you generated each time you process a row for which the LastRow() function returns True.
D) Output the sum that you generated up to the previous row each time you process a row with a "1" in the Flag column. Use the LastRow() function to determine when the last group is done.
E) Output the sum that you generated up to the previous row each time you process a row with a "1" in the Flag column.

2. You have a job that reads in Sequential File followed by a Transformer stage. When you run this job, which partitioning method will be used by default?

A) Round Robin
B) Random
C) Same
D) Hash

3. Click the exhibit button.

You submit a job from DataStage Director and then log onto your DataStage Linux server to issue the command "ps -ef | grep ds" and receive the following screen: Which process is a player?

A) 7216
B) 7217
C) 7117
D) 7215

4. You are given a job requirement that requires calculations based on the latest currency exchange rate. You decide to invoke a Web service to obtain the latest exchange rate.
What are two ways that you can perform a Web service invocation in a DataStage job to obtain the latest exchange rate? (Select two)

A) Use WISD Input stage.
B) Use Web Services Transformer stage.
C) Call a Web Service using a DSRoutine inside the Parallel Transformer stage.
D) Use Web Services Client stage as a lookup.

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

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

Solutions: