📚 Practice Mode

Mainframe Technologies: COBOL, JCL, and DB2

Learn at your own pace with hints and detailed explanations

1 / 20
Multiple Choice

What will happen when a file that doesnt exist is opened in I-O mode?

  1. The file will be created and will be opened for reading and writing
  2. The open fails and error occurs
  3. File will be created and opened for writing only
  4. The file will be created and opened for reading only
Change Mode