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What is the worst-case time complexity of a binary search on a sorted array?
A. O(log n)
B. O(n)
C. O(n log n)
D. O(1)
Answer: O(log n)
Which data structure is used to implement the breadth-first search algorithm?
A. Queue
B. Stack
C. Priority Queue
D. Linked List
Answer: Queue
In a graph, what is the term used for an edge that connects a node to itself?
A. Loop
B. Self-Edge
C. Cycle
D. Chord
Answer: Loop
Which problem can be solved using the ‘Greedy Algorithm’ approach?
A. Activity Selection Problem
B. Longest Common Subsequence
C. 0/1 Knapsack Problem
D. Shortest Path Problem
Answer: Activity Selection Problem
What is the best-case time complexity of the merge sort algorithm?
A. O(n log n)
B. O(n)
C. O(log n)
D. O(n^2)
Answer: O(n log n)
In a priority queue implemented using a heap, which operation has a time complexity of O(log n)?
A. Insert
B. Find Min/Max
C. Delete Min/Max
D. Peek
Answer: Insert
In a graph, what is an edge that connects two vertices without forming a cycle called?
A. Tree Edge
B. Back Edge
C. Cross Edge
D. Forward Edge
Answer: Tree Edge
Which data structure is used to implement recursion?
A. Stack
B. Queue
C. Linked List
D. Array
Answer: Stack
Which traversal technique is used to visit all nodes in a tree in level order?
A. Breadth-First Search
B. Depth-First Search
C. In-Order Traversal
D. Post-Order Traversal
Answer: Breadth-First Search