Data Processing MCQ - Practice Questions with Answers

XML is mainly used to represent data through nested, tree-like elements, so it describes hierarchically organized information. It may be processed, styled, or transformed by other tools, but XML itself is not a conversion engine and is not limited to producing XML or HTML output. Thus option C is the most accurate statement.

In the first pass of ascending bubble sort, adjacent elements are compared and the larger one moves right after each swap. Here 85 is swapped successively with 66, 23, 13, and 57, so the largest value reaches the last position. The list after the first pass is 32, 27, 51, 66, 23, 13, 57, 85, which matches option A.

In a DFD, a black hole is an anomaly where data enters a component but no outgoing flow is shown, so the data appears to disappear. Option B matches this idea by describing a data store with only inbound flows. Option A is not a black hole because it has no inbound flow.

A ranking scale asks respondents to arrange a set of items in order of importance, preference, or usefulness. That is exactly what option B states. Option A is a single-choice question, option C is a rating or satisfaction scale, and option D is a yes-no question.

A decision table is divided into four parts: condition stub at the upper left, condition entries at the upper right, action stub at the lower left, and action entries at the lower right. Therefore, the left-lower quadrant is the action stub. Hence option D is correct.