# Artificial Intelligence Questions & Answers – Uninformed Search Strategy

This set of Artificial Intelligence Multiple Choice Questions & Answers (MCQs) focuses on “Uninformed Search Strategy”.

1. Which search strategy is also called as blind search?
a) Uninformed search
b) Informed search
c) Simple reflex search
d) All of the mentioned

Explanation: In blind search, We can search the states without having any additional information. So uninformed search method is blind search.

2. How many types are available in uninformed search method?
a) 3
b) 4
c) 5
d) 6

Explanation: The five types of uninformed search method are Breadth-first, Uniform-cost, Depth-first, Depth-limited and Bidirectional search.

3. Which search is implemented with an empty first-in-first-out queue?
a) Depth-first search
c) Bidirectional search
d) None of the mentioned

Explanation: Because of FIFO queue, it will assure that the nodes that are visited first will be expanded first.

4. When is breadth-first search is optimal?
a) When there is less number of nodes
b) When all step costs are equal
c) When all step costs are unequal
d) None of the mentioned

Explanation: Because it always expands the shallowest unexpanded node.

5. How many successors are generated in backtracking search?
a) 1
b) 2
c) 3
d) 4

Explanation: Each partially expanded node remembers which successor to generate next because of these conditions, it uses less memory.

6. What is the space complexity of Depth-first search?
a) O(b)
b) O(bl)
c) O(m)
d) O(bm)

Explanation: O(bm) is the space complexity where b is the branching factor and m is the maximum depth of the search tree.

7. How many parts does a problem consists of?
a) 1
b) 2
c) 3
d) 4

Explanation: The four parts of the problem are initial state, set of actions, goal test and path cost.

8. Which algorithm is used to solve any kind of problem?
b) Tree algorithm
c) Bidirectional search algorithm
d) None of the mentioned

Explanation: Tree algorithm is used because specific variants of the algorithm embed different strategies.

9. Which search algorithm imposes a fixed depth limit on nodes?
a) Depth-limited search
b) Depth-first search
c) Iterative deepening search
d) Bidirectional search

Explanation: None.

10. Which search implements stack operation for searching the states?
a) Depth-limited search
b) Depth-first search
d) None of the mentioned

Explanation: It implements stack operation because it always expands the deepest node in the current tree.

Sanfoundry Global Education & Learning Series – Artificial Intelligence.

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