QUESTION $3$

is an open$-$source operating system whose source code is freely available to everyone.

a$.$ Linux

b$.$ Chrome

c$.$ Mac OS X

d$.$ UNIX

QUESTION $4$

One advantage of proprictary software versus off$-$the$-$shelf software is that

a$.$ the softwate provides a company with a competitive advantage by solving problens in a unique manner

b$.$ the initial cost of the software is lower

c$.$ the software is likely to meet basic business needs thar are common akross organizations

d$.$ the software is likely to be high quality becouse many customer firms have tested the software and helped

identify its bugs