Question

What is a Reference denoted by?

(a) They to memory cells are represented by pointer arrows originating in the memory cell rectangles

(b) A dot represents the null pointer

(c) They are represented by connecting disjoint collections of arrays or records with pointer arrows

(d) They to memory cells are represented by pointer arrows originating in the memory cell rectangles & dot represents the null pointer

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This interesting question is from Algorithm and Data Structure Specification topic in division Visibility, Accessibility and Information Hiding of Software Architecture

Answer 1

Right answer is (d) They to memory cells are represented by pointer arrows originating in the memory cell rectangles & dot represents the null pointer

Explanation: References or pointers to memory cells are represented by pointer arrows originating in the memory cell rectangles. A dot represents the null pointer or reference and Linked data structure implementations are represented by connecting disjoint collections of arrays or records with pointer arrows.