質問 1:Which three of the following options does the dsjob command have? (Choose three.)
A. Stopping a job
B. Specifying an appropriate log file
C. Listing projects, jobs, stages, links, and parameters
D. Setting an alias for a job
正解:A,C,D
質問 2:The given job processes large volumes of data using default partitioning, with sort/partition insertion enabled. Both source Data Sets are partitioned and sorted on the merge key. Assuming that the business logic allows all of the following actions, which design change would improve the performance of this job?
A. Set the "Preserve Partitioning" option on both Data Sets and replace the Merge stage with a Sort Funnel stage.
B. Before each input to the Merge stage, insert a Sort stage with "Don't Group, Previously Grouped" set on the merge key. Specify SAME partitioning on all inputs.
C. Set the buffer mode to "no buffer" on the output links of both Data Sets.
D. Use the Data Set Management Utility to combine both input Data Sets into a single source Data Set.
正解:B
解説: (Topexam メンバーにのみ表示されます)
質問 3:Your job runs slowly and does not scale beyond two nodes. It appears the data has been partitioned on the DoNotCall flag, which has accumulating totals based on this flag using a sort method.
Which technique would improve scalability and performance?
A. Change the preserve partitioning option on the stage ahead of the aggregator to clear partitioning.
B. Increase the number of physical nodes available for partitioning.
C. Add an additional column for partitioning to result in additional data partitions.
D. Change the partitioning method to Round Robin; add a second Aggregator stage with Execution mode 'Sequential' and
正解:B,C
質問 4: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 Description Annotation stage contains both the short and full descriptions for the job.
B. The Description Annotation stage can be added several times at different locations to identify business logic.
C. The background for the Description Annotation stage can be changed for each unique stage.
D. The full job description can be identified within the Description Annotation stage.
正解:A,D
質問 5:What are the three features of Information Server that allow you to deploy DataStage objects? (Select three)
A. istool
B. Information Server Manager
C. $APT_COPY_TRANSFORMER
D. Designer Client Export
E. dscc.exe
正解:B,E
質問 6:What is the correct restructure stage to extract data from four input columns (three of which carry vectors) and output them into two columns with one vectors in a subrecord and the non-vector carrying column being passed through the stage?
A. Split Subrecord Stage
B. Make Subrecord Stage
C. Column Export Stage
D. Column Import Stage
正解:D
質問 7:Which condition is required to use the LastRowInGroup() function to determine a key break on a field?
A. The LastRowInGroup() function requires the data to be grouped by the key field, but the data does not have to be sorted.
B. The input data has to be sorted by the key field, but it is not required that DataStage be able to detect this. For example, the input data might be sorted before it is input to the job. (However, the job will abort at runtime if the data isn't sorted.)
C. The LastRowInGroup() function does not require the data to be either sorted or grouped by the key field. If necessary the LastRowInGroup() function will perform a sort.
D. The input data has to be sorted by the key field and DataStage must be able to detect that the data is sorted, for example, by the presence of a Sort stage.
正解:D
質問 8:Which three parallel job stages allow you to use partial schemas? (Select three)
A. Sequential File stage
B. Peek stage
C. Dataset stage
D. Column Import stage
E. External Source stage
正解:A,D,E
解説: (Topexam メンバーにのみ表示されます)
質問 9:How are Host Systems added to the Shared Metadata repository? (Select two)
A. Select Repository > Metadata Sharing > Management from the main menu to open the Shared Metadata Management tool
B. Use the DataStage Administrator application to import new Host Systems.
C. Use the shared table creation wizard from the DataStage client to add a new Host System.
D. Use the Import/Export Manager when importing shared metadata.
正解:A
解説: (Topexam メンバーにのみ表示されます)
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IBM InfoSphere DataStage v8.5 認定 000-421 試験問題:
1. Which two features of Data Sets make them suitable for job restart points? (Choose two.)
A) They are persistent.
B) They are indexed to improve access.
C) They use the same data types as the parallel framework.
D) They are compressed to minimize storage space.
2. You would like to run a particular processing job within a job sequence for each weekday of the week. How could you do this? (Select two)
A) Have a parameter set that contains the days of the week you would like to process and routine to parse the days of the week contained in the "day" parameter.
B) Call a routine in the job sequencer that starts the processing job for each day you would like to process.
C) Set the frequency property in the job scheduler to weekdays only.
D) Start Loop and End Loop activity stages on the job sequencer canvas where you loop through the days and pass a value for each day into the job via parameter.
3. The DB2 and Oracle Enterprise stages support logged and non-logged DBMS table operations. What is the non-logged operation that is supported by the DB2 and Oracle Enterprise stages?
A) Update
B) Insert
C) Load
D) Delete
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 SaveInputRecord() to save the input row for processing in the loop. Use the GetInputRecord() to extract the row for each iteration of the loop.
B) Use the Count() function over the ColorList field to determine the number of loop iterations.
C) Use the LastRowInGroup() function to determine when the last color in the color list has been processed.
D) Specify the following loop condition: @ITERATION <= n, where n is a stage variable initialized with number of loop iterations.
E) Use the @ITERATION variable to determine which color in the ColorList field to extract using the Field function.
5. In a Transformer, which two of the following mappings can be handled by default type conversions. (Select two)
A) String input column mapped to a data output column.
B) Integer input column mapped to string output column.
C) Integer input column mapped to raw output column.
D) Date input column mapped to a string output column.
E) String input column mapped to integer output column.
質問と回答:
質問 # 1 正解: A、C | 質問 # 2 正解: C、D | 質問 # 3 正解: C | 質問 # 4 正解: B、D、E | 質問 # 5 正解: A、B |