Stack??

Accessing top element in stack is constant time operation.

• TRUE

• FALSE

Only top element can be accessed in stack

• TRUE

• FALSE

Stacks have LIFO ordering

• TRUE

• FALSE

Nested function calls form a stack

• TRUE

• FALSE

The postfix form of the expression (A+ B)*(C*D- E)*F / G is?

• AB + CDE * - * F *G /

• AB+ CD*E - FG /**

• AB + CD* E - F **G /

• AB + CD* E - *F *G /

Which of them is an abstract data structure (ADT)?

• Stacks

• Functions

• Queues

• Both A and C

LIFO stands for

• List of Outputs

• Last in First Out

• First in Last Out

• None of them

Act of adding values into a stack is called

• Popping

• Polling

• Pushing

• None

The postfix form of A*B+C/D is?

• *AB/CD+

• AB*CD/+

• A*BC+/D

• ABCD+/*

The prefix form of A-B/ (C * D ⋀ E) is?

• -/*⋀ACBDE

• -ABCD*⋀DE

• -A/B*C⋀DE

• -A/BC*⋀DE