Multiple choice technology mainframe Which of the following can be used to read and write from a file? Choose all that apply DATA STACK QUEUE COMPOUND VARIABLE SYMBOLIC VARIABLE Reveal answer Fill a bubble to check yourself A Correct answer Explanation The data stack queued via PUSH QUEUE serves as the buffer for EXECIO DISKW operations when writing to files. QUEUE only adds to the stack, compound and symbolic variables are memory structures not directly involved in file I/O.