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最新的 IBM Specialist C2090-421 免費考試真題:

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

2. Your job uses the MQ connector stage to read messages from an MQ queue. The job should retrieve the message ID into the MessageID field and parse the payload into two fields: Name is to get the first ten characters, Description is to get the remaining characters.
What will accomplish this?

A) First column is MessageID; select the WSMQ.MSGID data element for the Message ID field; second column is Name as Binary 10; third column is Description as VarBinary 200.
B) First column is MessageID as Binary 24; second column is Name as Binary 10; select WSMG. MSPAYLOAD data element; third column is Description as VarBinary 200; select WSMG.MSPAYLOAD data element.
C) First column is MessageID; select the WSMQ.MSGID data element for the Message ID field; column is Description as VarBinary 200; third column is Name as Binary 10.
D) First column is MessageID; select the WSMQ.MSGID data element for the Message ID field; second column is Name; select WSMG.MSPAYLOAD data element; third column is Description; select WSMG.MSPAYLOAD data element.

3. What are two advantages of using Runtime Column Propagation (RCP)? (Choose two.)

A) Only columns that are defined as VarChar need RCP enabled.
B) Only columns used in the data flow need to be defined.
C) RCP is not a feature of DataStage.
D) Sequential files don't require schema files when using RCP.
E) Columns not specifically used in the flow are propagated as if they were.

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

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

5. Records in a source file must be aggregated for further processing. Which two conditions would require the use of a Transformer stage instead of or in addition to an Aggregator stage? (Choose two.)

A) Aggregation results outside of a certain range need to be flagged as abnormal.
B) A global aggregation across all partitions is needed.
C) The data hasn't been sorted or grouped.
D) The aggregation is a custom formula for your enterprise.

問題與答案：