STACK - DATA STRUCTURES

Stacks have LIFO ordering

• TRUE

• FALSE

LIFO stands for

• Last in First Out

• First in Last Out

• List of Outputs

• None of them

Act of adding values into a stack is called

• Popping

• Pushing

• Polling

• None

If the elements “A”, “B”, “D” and “C” are placed in a stack and are deleted one at a time, in what order will they be removed?

• ABCD

• ABDC

• CDBA

• DCAB

While converting infix to postfix expression, what would be pushed into the stack?

• only operators

• opening symbol '('

• operators and opening symbol

• operands

• operators and operands

While evaluating the postfix expression, what would be pushed into the stack?

• operands

• operators

• operators and opening symbols

• operators and operands

• stack is not used for this evaluation

Process of removing an element from the stack

• Create

• Push

• Evaluation

• Pop

In a stack, if a user tries to remove an element from an empty stack it is called

• Underflow

• Empty Collection

• Overflow

• Garbage Collection

Pushing an element into a stack already having six elements and the size is six, then the stack has

• Overflow

• Crash

• Underflow

• User flow

A stack is a data structure in which elements

• can be added to any position and removed only from the top

• can be only added to the top and removed from any position

• can be added and removed from the top only

• can be added and removed from any position