Western Governors University (WGU) ICSC2100 C949 Data Structures and Algorithms I Practice Exam

A dynamic array is characterized by its ability to change size as needed, which allows it to accommodate varying amounts of data efficiently. Unlike static arrays, which have a fixed size determined at the time of creation, dynamic arrays can expand or contract to fit the data being stored. When the current capacity is exceeded, a dynamic array reallocates its storage space, typically by creating a new, larger array and copying the existing elements to that new array. This flexibility makes dynamic arrays a popular choice for situations where the size of the dataset may fluctuate.

In contrast to the options provided, a static array is limited by its predetermined size, while a linked list structure involves nodes that are dynamically allocated but do not behave like arrays. Additionally, the fact that a dynamic array may store objects does not define its dynamic nature; object storage can occur in both static and dynamic arrays. Thus, the key defining characteristic of dynamic arrays is their capability to adjust their size based on the needs of the application.