application of the array
How about an employee record...
There is no generic answer for this question (if it is a question at all).
Queue is a FIFO(First In First Out) data structure. The main applications of queue data structure are conversion of expressions from infix to postfix and from infix to prefix,evaluation of postfix expressions.
Memory management.......that is split and fullup the block..
One way to emulate a stack with a data structure is with a singly linked list wherein you can only add and remove nodes from the head or tail of the list (depending on implementation). An easy and straightforward application of this type of data structure would be a reverse polish notation calculator where values can be pushed onto the data structure and then popped when one comes across an arithmetic symbol.
The stacks and queues are used for the input of continuous data in the application. The stacks are used during the run-time for application sequence initialization.
No, it depends on the application of the data structure. As an analogy, screwdrivers are not necessarily better than hammers. Yes, they are more "powerful", but they are not always the best choice in every situation.
In the context of smart cards, an application protocol data unit is the communication unit between a smart card reader and a smart card. The structure of the APDU is defined by ISO/IEC 7816-4 Organization, security and commands for interchange.
Generally a class pertaining to logical and practical software, and some sort of extensive application of various data structures. At my school the class is called "Data Structures."