This B-Trees MCQs contains the MCQs on b tree, b+ tree and 2-3 tree. We have the best collection of B-Trees MCQs and answer with FREE PDF. These B-Trees MCQs will help you to prepare for any competitive exams like: BCA, MCA, GATE, GRE, IES, PSC, UGC NET, DOEACC Exams at all levels – you just have to practice regularly.
B-Trees MCQs
1. Which of the following data structure can provide efficient searching of the elements?
a) unordered lists
b) binary search tree
c) treap
d) 2-3 tree
Answer: 2-3 tree
2. LLRB maintains 1-1 correspondence with 2–3 trees.
a) True
b) False
Answer: True
3. The height of 2-3 tree with n elements is ______
a) between (n/2) and (n/3)
b) (n/6)
c) between (n) and log2(n + 1)
d) between log3(n + 1) and log2(n + 1)
Answer: between log3(n + 1) and log2(n + 1)
4. Which of the following is not true about the 2-3 tree?
a) all leaves are at the same level
b) it is perfectly balanced
c) postorder traversal yields elements in sorted order
d) it is B-tree of order 3
Answer: postorder traversal yields elements in sorted order
5. AVL trees provide better insertion the 2-3 trees.
a) True
b) False
Answer: False
Top 2-3 Tree MCQs with FREE PDF
6. How many child nodes does each node of Ternary Tree contain?
a) 4
b) 6
c) 5
d) 3
Answer: 3
7. Which of the following is the name of the node having child nodes?
a) Brother
b) Sister
c) Mother
d) Parent
Answer: Parent
8. What is the depth of the root node of the ternary tree?
a) 2
b) 1
c) 0
d) 3
Answer: 0
9. How many extra nodes are there in Full ternary tree than a complete ternary tree?
a) 1
b) 2
c) 3
d) Both have same number of nodes
Answer: Both have same number of nodes
10. Can leaf node be called child node in a ternary tree?
a) True
b) False
Answer: True
11. Can child node be always called Leaf node in the ternary tree?
a) True
b) False
Answer: False
12. Which of the following is the implementation of the ternary tree?
a) AVL Tree
b) Ternary Heap
c) Hash Table
d) Dictionary
Answer: Ternary Heap
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13. A B-tree of order 4 and of height 3 will have a maximum of _______ keys.
a) 255
b) 63
c) 127
d) 188
Answer: 255
14. B-tree and AVL tree have the same worst case time complexity for insertion and deletion.
a) True
b) False
Answer: True
15. 2-3-4 trees are B-trees of order 4. They are an isometric of _____ trees.
a) AVL
b) AA
c) 2-3
d) Red-Black
Answer: Red-Black
16. B-tree of order n is a order-n multiway tree in which each non-root node contains __________
a) at most (n – 1)/2 keys
b) exact (n – 1)/2 keys
c) at least 2n keys
d) at least (n – 1)/2 keys
Answer: at least (n – 1)/2 keys
17. What is the best case height of a B-tree of order n and which has k keys?
a) logn (k+1) – 1
b) nk
c) logk (n+1) – 1
d) klogn
Answer: logn (k+1) – 1
18. Compression techniques can be used on the keys to reduce both space and time requirements in a B-tree.
a) True
b) False
Answer: True
19. Which of the following is the most widely used external memory data structure?
a) AVL tree
b) B-tree
c) Red-black tree
d) Both AVL tree and Red-black tree
Answer: B-tree
20. Which of the following is true?
a) larger the order of B-tree, less frequently the split occurs
b) larger the order of B-tree, more frequently the split occurs
c) smaller the order of B-tree, more frequently the split occurs
d) smaller the order of B-tree, less frequently the split occurs
Answer: larger the order of B-tree, less frequently the split occurs
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1000+ Data Structure MCQs
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