Question $31(1$ point$)$ Current network operating systems commonly in use include: Question $31$ options: Novell. Windows NT$/2000.$ Unix$/$Linix$.$ all of the above. only a and c$.$ Question $32(1$ point$)$ Object$-$oriented technology potentially improves: Question $32$ options: promoting program$/$data independence. productivity. maintainability. reusability of objects. all of the above. Question $33(1$ point$)$ When two different Linear Programming models address the same problem: Question $33$ options: the better one will make fewer assumptions. the better one will make more assumptions. the better one will is most useful to the after the cost of employing it is netted out. both a and c$.$ both b and c$.$ Question $34(1$ point$)$ Different methods of determining the best options include: Question $34$ options: What$-$if analysis and Trial and Error. Goal Seek and Solver. Solut