To answer this question, you need to understand how the disposition of SYSOUT datasets can be set for an entire jobstream.
Option A) SYSOUT parameter - This option is correct because you can use the SYSOUT parameter to specify the disposition of the SYSOUT datasets for an entire jobstream. By providing a specific disposition value (e.g., KEEP, DELETE), you can control what happens to the output datasets after the job completes.
Option B) OUTPUT parameter - This option is incorrect because the OUTPUT parameter is used to specify the destination and characteristics of the output from individual job steps, not for setting the disposition of SYSOUT datasets for the entire jobstream.
Option C) DEFAULT parameter - This option is incorrect because there is no specific parameter called DEFAULT that is used to set the disposition of SYSOUT datasets for the entire jobstream.
Option D) DEST keyword - This option is incorrect because the DEST keyword is used within the OUTPUT parameter to specify the destination for the output from individual job steps, not for setting the disposition of SYSOUT datasets for the entire jobstream.
The correct answer is Option A) SYSOUT parameter. This option is correct because you can use the SYSOUT parameter to set the disposition of SYSOUT datasets for an entire jobstream.