Multiple choice technology mainframe

What is the line command used to display the data before and after change

  1. Comapre dataset

  2. Tso compare

  3. compare session

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In TSO/ISPF, the COMPARE session command (abbreviated C) is used to compare two datasets or display data before and after changes. This command shows a side-by-side comparison highlighting differences. 'Compare dataset' and 'Tso compare' are not the correct command syntax.

AI explanation

In the ISPF editor, the primary command COMPARE (abbreviated COMP) — and specifically COMPARE * — compares the current EDIT/VIEW session against the data as it was when the session started, displaying differences inline (changed lines flagged, external/original lines shown with '========' markers). This is the ISPF facility for seeing data before and after your edits. The question is imprecisely worded (it says 'line command', but COMPARE is an editor/primary command) and none of the options is the literal command name. Of the choices, 'compare session' best matches the COMPARE * behavior of comparing against the session's original content; 'Comapre dataset' (typo), 'Tso compare', and 'All of the above' do not name a real ISPF facility. So the marked answer is the best available, though the phrasing is non-standard.

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