Data Structures MCQs with Answers
Practice important Data Structures MCQs with answers and explanations.
Multiple Choice Questions
Q661: How does Quadratic Probing resolve collisions differently from Linear Probing?
- A: It adds the square of the probe number to the index
- B: It uses a linked list to store data
- C: It searches for the next empty slot sequentially
- D: It rehashes the data with a new hash function
View Answer
A
Q662: What is a characteristic of Linked List Chaining in hash tables?
- A: It stores data in a list at each index
- B: It stores data sequentially in the table
- C: It uses multiple hash functions
- D: It avoids all collisions
View Answer
B
Q663: When using hashing with linked lists, what happens when two keys hash to the same index?
- A: Both keys are stored in a linked list at that index
- B: The second key overwrites the first
- C: The second key is stored in the next available slot
- D: The first key is removed and replaced with the second key
View Answer
A
Q664: What is the typical hash function used in hashing animations mentioned in the content?
- A: `mod 10`
- B: `mod 50`
- C: `mod 75`
- D: `mod 100`
View Answer
D
Q665: In the given hashing animation example, how is the hash value determined?
- A: By adding a constant to the key
- B: By multiplying the key by a constant
- C: By taking the modulus of the key with a number
- D: By applying a series of hash functions
View Answer
C
Q666: What issue is commonly observed when using Linear Probing for collision resolution?
- A: Clustering of keys
- B: Underflow of the hash table
- C: Overflow of the hash table
- D: Hash values are not unique
View Answer
A
Q667: How does Quadratic Probing handle collisions differently from Linear Probing?
- A: It uses quadratic increments to resolve collisions
- B: It uses linear increments
- C: It stores colliding keys in a linked list
- D: It rehashes the keys with a new hash function
View Answer
A
Q668: Which of the following is a situation where hashing is highly useful?
- A: When frequent searches are needed in a stable table
- B: When frequent insertions and deletions are required
- C: When entries need to be sorted
- D: When table traversal is needed
View Answer
A
Q669: Why might hashing not be suitable when the data needs to be sorted?
- A: Hash tables do not maintain order
- B: Sorting is faster with hash tables
- C: Hash tables are always sorted by default
- D: Hashing algorithms sort data automatically
View Answer
A
Q670: What is a key advantage of using hash tables for spell checking?
- A: Hash tables provide constant time lookup for words
- B: Hash tables sort words alphabetically
- C: Hash tables correct spelling mistakes automatically
- D: Hash tables are faster than other data structures
View Answer
A