Stack is also known as

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BPSC AE Paper 6 (Electrical) 25 Mar 2022 Official Paper
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  1. FIFO memory
  2. flash memory
  3. LILO memory
  4. LIFO memory

Answer (Detailed Solution Below)

Option 4 : LIFO memory
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Detailed Solution

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The correct answer is 'Last In First Out(LIFO)'

Key Points

  • Stacks in computing architectures are regions of memory where data is added or removed in a last-in-first-out (LIFO) manner.
  • In most modern computer systems, each thread has a reserved region of memory referred to as its stack.
  • When a function executes, it may add some of its local state data to the top of the stack; when the function exits it is responsible for removing that data from the stack.
  • The stack is often used to store variables of fixed length local to the currently active functions.
  • Programmers may further choose to explicitly use the stack to store local data of variable length.
  •  If a region of memory lies on the thread's stack, that memory is said to have been allocated on the stack, i.e. stack-based memory allocation (SBMA).
  • This is contrasted with a heap-based memory allocation (HBMA). The SBMA is often closely coupled with a function call stack.


Additional Information

Following are some of the important applications of a Stack data structure:

  • Stacks can be used for expression evaluation.
  • Stacks can be used to check parenthesis matching in an expression.
  • Stacks can be used for Conversion from one form of expression to another.
  • Stacks can be used for Memory Management.Stack data structures are used in backtracking problems. 
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