What type of memory uses a fixed block for data storage?

The memory stack is characterized by using a fixed block for data storage, which follows a Last In, First Out (LIFO) order. This means that data is added and removed in a specific sequence, where the last item added is the first to be removed. The stack has a predetermined size, which is set when the stack is created. This makes it efficient for managing function call data and local variables because memory allocation and deallocation occur automatically as functions are called and return.

In contrast, other types of memory serve different purposes. For instance, the memory heap is more flexible, allowing dynamic allocation of memory as needed during runtime, which can vary in size. Memory cache is a smaller, faster type of volatile memory that provides high-speed data access to frequently used data, and it operates based on a replacement strategy, not fixed-size blocks. Dynamic memory also allows for flexible allocation and deals with varying sizes of data storage, giving programmers control over how memory is managed but without the constraints of a fixed block. Thus, the characteristics of stack memory specifically align with the concept of using fixed blocks for data storage.