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Hash Tables Chaining using Doubly Linked Lists MCQs

1. What is the time complexity of insert function in a hash table using a doubly linked list?

a) O(1)

b) O(n)

c) O(log n)

d) O(n log n)

Answer: O(1)

2. What is the time complexity of search function in a hash table using a doubly linked list?

a) O(1)

b) O(n)

c) O(log n)

d) O(n log n)

Answer: O(1)

3. What is the time complexity of delete function in the hash table using a doubly linked list?

a) O(1)

b) O(n)

c) O(log n)

d) O(n log n)

Answer: O(1)

4. Hashing can be used to encrypt and decrypt digital signatures.

a) true

b) false

Answer: true

5. What is the advantage of using a doubly linked list for chaining over singly linked list?

a) it takes less memory

b) it is easy to implement

c) it makes the process of insertion and deletion faster

d) it causes less collisions

Answer: it makes the process of insertion and deletion faster

6. Which of the following technique stores data in the hash table itself in case of a collision?

a) Open addressing

b) Chaining using linked list

c) Chaining using doubly linked list

d) Chaining using binary tree

Answer: Open addressing

7. Which of the following technique stores data in a separate entity in case of a collision?

a) Open addressing

b) Chaining using doubly linked list

c) Linear probing

d) Double hashing

Answer: Chaining using doubly linked list

8. Which of the following is used in hash tables to determine the index of any input record?

a) hash function

b) hash linked list

c) hash tree

d) hash chaining

Answer: hash function

9. What is the advantage of a hash table as a data structure?

a) faster access of data

b) easy to implement

c) very efficient for less number of entries

d) exhibit good locality of reference

Answer: faster access of data

10. What is the use of a hash function?

a) to calculate and return the index of corresponding data

b) to store data

c) to erase data

d) to change data

Answer: to calculate and return the index of corresponding data

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Categories: Hash Tables