Computer Concepts Practice Test 2026 - Free Computer Concepts Practice Questions and Study Guide

Memory layout and dynamic sizing define how an array and a linked list behave differently. An array stores its elements contiguously in one block of memory, which makes direct access by index fast and cache-friendly. A linked list keeps each element in its own node, with pointers linking nodes together; this arrangement lets the structure grow or shrink without shifting other elements, making insertions and deletions in the middle easier.

That distinction is what the option reflects: arrays provide contiguous storage, while linked lists use nodes with pointers to enable dynamic size and easier insertions. It’s not that one is always faster in every operation—arrays can be costly to resize or insert into, and linked lists incur extra memory for pointers and slower random access. And the statements that linked lists store data contiguously or that memory layouts are identical are incorrect.