Tag: datastage

Quizzes (1) Questions (8)

Questions Related to datastage

Multiple choice datastage partition

This method is useful for resizing partitions of an input data set that are not equal in size.

  1. Range

  2. Round Robin

  3. Hash

  4. Same
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Round Robin partitioning redistributes data evenly across all partitions by sending rows to partitions in a rotating fashion (1,2,3,1,2,3...). This is specifically useful when input partitions are unequal in size - Round Robin will rebalance them so each partition has approximately equal data volume. Range partitioning divides based on value ranges, Hash partitions based on a hash function, and Same keeps the same partitioning. Only Round Robin explicitly handles resizing/rebalancing unequal partitions.

Multiple choice datastage mode

Impersonation mode is not applicable to ?

  1. UNIX

  2. LINUX

  3. WINDOWS

  4. ALL THE ABOVE
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Impersonation mode in DataStage allows a stage to connect to a data source using a specific user's credentials. This feature is primarily designed for Unix/Linux environments to handle file permissions and is not applicable to Windows-based engine installations in the same architectural manner.

Multiple choice datastage nodes

What is the maximum number of nodes that can be configured in Datastage 8.5 ?

  1. 10

  2. 6

  3. 8

  4. infinity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

IBM DataStage 8.5 supports a maximum of 8 nodes in a configuration file. This is a version-specific limitation of DataStage 8.5. Later versions (like 9.x and 11.x) support more nodes. Option A (10) and B (6) are incorrect. Option D ('infinity') is incorrect because every version has a practical maximum based on licensing, hardware, and software constraints. For DataStage 8.5 specifically, the documented maximum is 8 nodes.

Multiple choice datastage run dsjob

How to run the dsjob in command prompt ?

  1. run dsjob <projectname> <jobname>

  2. $dsjob -run <projectname> <jobname>

  3. dsjob run <projectname> <jobname>

  4. $run -dsjob <projectname> <jobname>
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The correct syntax to run a DataStage job from command line is 'dsjob -run '. The $ prefix in option B represents the shell prompt (common in Unix/Linux), not part of the actual command. Option A is missing the dash before 'run'. Option C incorrectly uses 'run' instead of '-run'. Option D has the wrong order with 'run' before 'dsjob'.

Multiple choice datastage division

In Datastage 8.5, If division operation has to be performed in Transformer stage, What will be the output if Numerator is 1 and denominator is 0 ?

  1. Zero

  2. Infinity

  3. Null

  4. Job aborts
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In DataStage 8.5 Transformer stage, division by zero (1/0) returns Zero rather than aborting the job or returning infinity/null. This is a specific behavior in DataStage - many systems would throw an error or return NULL for division by zero, but DataStage handles it gracefully by returning zero. This behavior was changed in later versions.

Multiple choice datastage nodes

What is the maximum number of nodes that can be configured in Datastage 8.5 ?

  1. 10

  2. 6

  3. 8

  4. infinity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

To solve this question, the user needs to have knowledge of Datastage 8.5 and the concept of nodes in Datastage.

In Datastage 8.5, the maximum number of nodes that can be configured depends on the edition of Datastage. The user needs to know that the correct answer will be the maximum number of nodes that can be configured in Datastage 8.5.

Now, let's go through each option and explain why it is right or wrong:

A. 10: This option is incorrect because Datastage 8.5 does not support a maximum of 10 nodes. The maximum number of nodes that can be configured in Datastage 8.5 is less than 10.

B. 6: This option is incorrect because Datastage 8.5 does not support a maximum of 6 nodes. The maximum number of nodes that can be configured in Datastage 8.5 is less than 6.

C. 8: This option is correct. In Datastage 8.5, the maximum number of nodes that can be configured is 8. This means that a Datastage 8.5 environment can have a maximum of 8 nodes.

D. infinity: This option is incorrect because Datastage 8.5 does not support an infinite number of nodes. There is a maximum limit to the number of nodes that can be configured in Datastage 8.5.

The Answer is: C. 8