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# Artificial Intelligence MCQ Questions - Alpha Beta Pruning

Alpha Beta Pruning MCQs : This section focuses on "Alpha Beta Pruning" in Artificial Intelligence. These Multiple Choice Questions (MCQ) should be practiced to improve the AI skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. Alpha-beta pruning is a modified version of the?

A. minimin algorithm
B. maximax algorithm
C. minimax algorithm
D. maximin algorithm

2. There is a technique by which without checking each node of the game tree we can compute the correct minimax decision, and this technique is called?

A. alpha-beta pruning
B. Alpha-Beta Algorithm
C. pruning
D. minimax algorithm

3. The initial value of alpha is?

A. Negative Infinity
B. 0
C. Positive Infinity
D. 1

4. The initial value of beta is ?

A. Negative Infinity
B. 0
C. Positive Infinity
D. -1

5. The main condition which required for alpha-beta pruning is?

A. alpha<=beta
B. alpha>=beta
C. alpha=beta
D. alpha!=beta

6. How many types of Move Ordering in Alpha-Beta pruning?

A. 3
B. 4
C. 1
D. 2

7. The time complexity for such an Worst order is?

A. O(b*m)
B. O(b^m)
C. O(b)
D. O(logb)

8. Complexity in ideal ordering is ?

A. O(b*(m/2))
B. O(b^m)
C. O(b*m)
D. O(logb)

9. While backtracking the tree, the node values will be passed to upper nodes instead of values of alpha and beta.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

10. The MIN player will only update the value of alpha.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

11. Which search is equal to minimax search but eliminates the branches that can’t influence the final decision?

A. Depth-first search
C. Alpha-beta pruning
D. None of the above

12. Which values are independant in minimax search algorithm?

A. Pruned leaves x and y
B. Every states are dependant
C. Root is independant
D. None of the above

13. To which depth does the alpha-beta pruning can be applied?

A. 10 states
B. 12 states
C. 8 states
D. Any States

14. Which search is similar to minimax search?

A. Hill-climbing search
B. Depth-first search
D. All of the above

15. Which value is assigned to alpha and beta in the alpha-beta pruning?

A. alpha = max
B. alpha = min
C. beta = min
D. Both A and C

16. Where does the values of alpha-beta search get updated?

A. Along the path of search
B. Initial state itself
C. At the end
D. None of the above

17. We will only pass the alpha, beta values to the child nodes.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

18. Which ordering consumes more time because of alpha-beta factors?

A. Ideal ordering
B. Worst ordering
C. Both A and B
D. None of the above

19. In which year Donald Knuth and Ronald W. Moore refined the algorithm?

A. 1970
B. 1975
C. 1980
D. 1985

20. What is called as transposition table?

A. Hash table of next seen positions
B. Hash table of previously seen positions
C. Next value in the search
D. None of the above
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