uestion $23(1$ point$)$

Mac OS X is an example of a hybrid system, consisting of both the Mach microkernel and BSD

UNIX.

$51$

True

False

$54$

Question $24(1$ point$)$

S

File management is an example of a system program.

$60$

True

False

$63$

Question $25(1$ point$)$

$65$

$66$

A "user" of an operating system is always a human person.

$68$

$69$

True

False