Which of the following are true about devices attached to UNIX systems.

Question $10$Answer

a$.$

UNIX systems hide much of the complexity of device interaction from application programmers.

b$.$

Device files are linked to a physical device using major and minor node numbers.

c$.$

Programs always read information from devices one byte at a time.

d$.$

Most devices are accessed via files in the $/$device directory.

e$.$

Output devices attached to UNIX systems must have similar hardware so as to behave similarly.

f$.$

All devices are accessed by opening special files.