Question

Which state of the linear buffer will provide old data, when it is empty?

(a) overrun

(b) critical timing

(c) peak overshoot

(d) underrun

I had been asked this question by my college professor while I was bunking the class.

Origin of the question is Types of Buffers topic in division Buffering and other Data Structures of Embedded Systems

Answer 1

Right answer is (d) underrun

The best I can explain: In the linear buffer, when it is empty it will provide the old data, usually the last entry so that the processor will continue to process the incorrect data potentially, and this condition is known as underrun.