Which of the following is true. when both STEPLIB and JOBLIB statements are coded in a program?

  1. JOBLIB statement should precede the EXEC statement.

  2. STEPLIB is coded after the EXEC statement

  3. STEPLIB will override the JOBLIB specification

  4. All of the above


Correct Option: D

AI Explanation

To answer this question, we need to understand the purpose and usage of the STEPLIB and JOBLIB statements in a program.

The STEPLIB and JOBLIB statements are used in IBM Mainframe systems to specify the libraries or datasets that contain the load modules required for program execution. These statements help in resolving program dependencies and ensuring that the required modules are available during execution.

Let's go through each option to understand why it is correct or incorrect:

Option A) JOBLIB statement should precede the EXEC statement - This option is incorrect because the placement of the JOBLIB statement does not necessarily need to precede the EXEC statement. The JOBLIB statement can be coded anywhere in the program, as long as it is before the step that requires the specified load modules.

Option B) STEPLIB is coded after the EXEC statement - This option is incorrect because the STEPLIB statement should be coded before the EXEC statement. The STEPLIB statement is used to specify the libraries or datasets that contain the required load modules for a specific step in the program. Therefore, it needs to be coded before the step that requires those load modules.

Option C) STEPLIB will override the JOBLIB specification - This option is incorrect because the STEPLIB statement does not override the JOBLIB specification. The STEPLIB statement and JOBLIB statement serve different purposes. The JOBLIB statement specifies the libraries or datasets that contain the load modules required for the entire job, while the STEPLIB statement specifies the libraries or datasets that contain the load modules required for a specific step. Both statements can be used together to ensure that the required load modules are available.

Option D) All of the above - This option is correct because none of the previous options are completely correct. The correct answer is that when both STEPLIB and JOBLIB statements are coded in a program, the JOBLIB statement can be placed anywhere in the program and does not necessarily have to precede the EXEC statement. The STEPLIB statement needs to be coded before the EXEC statement and does not override the JOBLIB specification.

Therefore, the correct answer is option D) All of the above.

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