This is should be answerd in Unix opreating system

1- Research the maximum amount of virtual memory that can be accommodated on at long three different computing devices. Cite the operating system for each device

2 -Files can be formatted with fixed-length fields or variable-length difference between the two file formatted types. In your own words, answer the questions: 1) Would it be feasible to combine both formats for storage on a single disk, and 2) Explain the reason for your answers