How can a JES3 operator command be entered through the jobstream?
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Through the OPERATOR statement
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Through the console statement
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Through the COMMAND statement
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Through the //** statement
In JES3 (Job Entry Subsystem 3), operator commands can be entered through the jobstream using the //** statement. This is the JES3-specific syntax for embedding operator commands directly in the JCL. The other options (OPERATOR, console, COMMAND statements) are different JCL constructs with different purposes - //** is specifically for JES3 operator commands in the input stream.
Marked correct: Through the // statement*. JES3 control (JCL) statements are conventionally introduced with a line beginning `//followed immediately by a keyword, e.g.//OPERATOR, which is the documented mechanism for embedding an operator command directly inside a job's stream so JES3 executes it as the job runs. Given that the first option, 'Through the OPERATOR statement,' describes essentially this same//*OPERATOR` mechanism by name, while the marked-correct option describes it by punctuation ('//*'), there's a real chance the marked answer reflects imprecise/garbled option wording from the source material rather than a clean distinction between genuinely different mechanisms.