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Algorithms and Data Structures | Test 3 Review | CSCI-3110-002 MTSU

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4. 2-3-4 Tree

Questão 1 de 18

1

What are the internal node stipulations in a 2-3-4 tree?

Selecione uma das seguintes:

  • If the internal node has one data item in it, then it only has two children
    if the internal node has two data items in it, then it has three children
    if the internal node has three data items in it, then it has four children

  • none of the above

Explicação

Questão 2 de 18

1

An internal node in a 2-3-4 tree is said to be a _ node if it has
_ data elements.

Selecione uma das seguintes:

  • A) 2, 2

  • B) 3, 2

  • C) 3, 4

  • D) 4, 4

Explicação

Questão 3 de 18

1

What makes a 2-3-4 tree seperate from a binary tree?

Selecione uma das seguintes:

  • Each node can have up to three elements and four children.

  • none of the above

Explicação

Questão 4 de 18

1

What does the 2,3,4 in a 2-3-4 tree mean

Selecione uma das seguintes:

  • A.how many links to child nodes can potentially be contained in a given node

  • B.how many searches must be done find element of the tree

  • C.none of the above

  • D.A and B

Explicação

Questão 5 de 18

1

What are 2-3-4 tree's commonly used to implement?

Selecione uma das seguintes:

  • Dictionaries

  • none of the above

Explicação

Questão 6 de 18

1

a 2–3–4 tree is a self-balancing data structure that is commonly used to implement dictionaries.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 7 de 18

1

in a 2-3-4 tree a node can have up to 4 children?

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 8 de 18

1

Which of the following is true of 2-3-4 trees?

Selecione uma das seguintes:

  • a. a 2-node has TWO data elements and TWO child nodes.

  • b. a 3-node has TWO data elements and THREE child nodes.

  • c. a 4-node has THREE data elements and THREE child nodes.

  • d. None are true!

Explicação

Questão 9 de 18

1

What is the maximum number of children in a 2-3-4 tree?

Selecione uma das seguintes:

  • A) There is no maximum

  • B) 9

  • C) 2

  • D) 4

Explicação

Questão 10 de 18

1

A tree where every node with children has either 2, 3, or 4 children:

Selecione uma das seguintes:

  • 2-3-4 tree

  • none of the above

Explicação

Questão 11 de 18

1

A 2-3-4 tree is a tree where every node with children has ________ child nodes.

Selecione uma das seguintes:

  • A. 2 3 or 4

  • B. 1 2 or 3

  • C. 4 5 or 6

  • D. 2 4 or 6

Explicação

Questão 12 de 18

1

What is one proerty of 2-3-4 trees?

Selecione uma das seguintes:

  • A) All external nodes are at the same depth

  • B) The trees have height 2, 3, or 4

  • C) They are A-Trees

  • D) None

Explicação

Questão 13 de 18

1

Which of the following is a characteristic of a 2-3-4 tree?

Selecione uma das seguintes:

  • A. all leaves are on the same level

  • B. each node has 2 keys with 3 children, and every tree is log 4 for searching

  • C. has 3 or 4 keys per node

  • D. each node can have any number of children, but only 2, 3, or 4 keys per node

Explicação

Questão 14 de 18

1

What are the properties of a 2-3-4 tree?

Selecione uma das seguintes:

  • A. Every node (leaf or internal) is a 2-node, 3-node or a 4-node, and holds one, two, or three data elements, respectively.

  • B. All leaves are at the same depth (the bottom level).

  • C. All data is kept in sorted order.

  • D. All of the above

Explicação

Questão 15 de 18

1

2-3-4 trees are an isometry of red-black trees.

Selecione uma das opções:

  • VERDADEIRO
  • FALSO

Explicação

Questão 16 de 18

1

In computer science, a 2–3–4 tree (also called a 2–4 tree) is a self-balancing data structure that is commonly used to implement dictionaries.
which is not correct the following properties of 2-3-4 tree?

Selecione uma das seguintes:

  • a. Every node (leaf or internal) is a 2-node, 3-node or a 4-node, and holds one, two, or three data elements, respectively.

  • b. All leaves are at the same depth (the bottom level).

  • c. All data is kept in sorted order.

  • d. All data is not kept in any certain sorted order.

Explicação

Questão 17 de 18

1

which one is not right about the 2_3_4 tree?

Selecione uma das seguintes:

  • A. one node in a 2_3_4 tree must has 4 child nodes.

  • B. In the average case, the time complexity of searching one member of the 2_3_4 tree is O(logn).

  • C. In the average case, the time complexity of inserting one member into the 2_3_4 tree is O(logn).

  • D. 2–3–4 trees are B-trees of order 4.

Explicação

Questão 18 de 18

1

In big O notation, what is the worst case time complexity for inserting a node into a 2-3-4 tree?

Selecione uma das seguintes:

  • A) O(Log(N+1))

  • B) O(Log(N-1))

  • C) O(Log(N/2))

  • D) O(Log(N))

Explicação