Hashing — Part 2 MCQs with Explanations

Reduced likelihood of collisions. is the correct answer to “What is the main advantage of using a hash function that distributes values uniformly across the hash table”. This question is standard in competitive examination syllabi for Hashing.

Chaining is the correct answer to “Which of the following techniques involves storing an array of lists in a hash table”. This question is standard in competitive examination syllabi for Hashing.

When the hash table size is small. is the correct answer to “In which case is a hash function with a high number of possible output values less effective”. This question is standard in competitive examination syllabi for Hashing.

By using a second hash function to compute a new index. is the correct answer to “How does double hashing work to resolve collisions in a hash table”. This question is standard in competitive examination syllabi for Hashing.

Dynamic resizing and rehashing. is the correct answer to “What is a common strategy to ensure that a hash table performs optimally under varying loads”. This question is standard in competitive examination syllabi for Hashing.

Doubly linked list is the correct answer to “In simple chaining, what data structure is appropriate”. This question is standard in competitive examination syllabi for Hashing.

Insert and search is the correct answer to “Which of the following operations are done in a hash table”. This question is standard in competitive examination syllabi for Hashing.

14452 is the correct answer to “Interpret the given character string as an integer expressed in suitable radix notation. Character string = pt”. This question is standard in competitive examination syllabi for Hashing.

Primary collision is the correct answer to “Which of the following problems occur due to linear probing”. This question is standard in competitive examination syllabi for Hashing.

True is the correct answer to “Collision is caused due to the presence of two keys having the same value.”. This question is standard in competitive examination syllabi for Hashing.

Jaccard Coefficient is the correct answer to “Which indicator is used for similarity between two sets”. This question is standard in competitive examination syllabi for Hashing.

2.5 and 1.5 is the correct answer to “How many probes are required on average for insertion and successful search”. This question is standard in competitive examination syllabi for Hashing.

True is the correct answer to “Hashing can be used in online spelling checkers.”. This question is standard in competitive examination syllabi for Hashing.

False is the correct answer to “In open addressing the hash table can never become full.”. This question is standard in competitive examination syllabi for Hashing.

Linked list is the correct answer to “Which of the following is identical to that of a separate chaining hash node”. This question is standard in competitive examination syllabi for Hashing.

A function that computes the location of the key in the array is the correct answer to “What is a hash function”. This question is standard in competitive examination syllabi for Hashing.

k is the correct answer to “On what value does the probe sequence depend on”. This question is standard in competitive examination syllabi for Hashing.

True is the correct answer to “Double hashing is one of the best methods available for open addressing.”. This question is standard in competitive examination syllabi for Hashing.

MinHash is the correct answer to “Which technique was firstly used clustering documents using the similarity of two words or strings”. This question is standard in competitive examination syllabi for Hashing.

0 is the correct answer to “What is the value of the Jaccard index when the two sets are disjoint”. This question is standard in competitive examination syllabi for Hashing.

False is the correct answer to “A good hash approach is to derive the hash value that is expected to be dependent of any patterns that might exist in the data.”. This question is standard in competitive examination syllabi for Hashing.

400 is the correct answer to “How many hashes will be needed for calculating Jaccard index with an expected error less than or equal to 0.05”. This question is standard in competitive examination syllabi for Hashing.

Every element has equal probability of hashing into any of the slots is the correct answer to “What is simple uniform hashing”. This question is standard in competitive examination syllabi for Hashing.

O(1) is the correct answer to “What is the search complexity in direct addressing”. This question is standard in competitive examination syllabi for Hashing.

Distinct array position for every possible key is the correct answer to “What is direct addressing”. This question is standard in competitive examination syllabi for Hashing.

hash table using open addressing is the correct answer to “Which of the following variant of a hash table has the best cache performance”. This question is standard in competitive examination syllabi for Hashing.

True is the correct answer to “Sequential access in a Hash tree is faster than in B-trees.”. This question is standard in competitive examination syllabi for Hashing.

False is the correct answer to “The value of h2(k) can be composite relatively to the hash table size m.”. This question is standard in competitive examination syllabi for Hashing.

Chaining using a binary tree is the correct answer to “Which of the following technique stores data separately in case of a collision”. This question is standard in competitive examination syllabi for Hashing.

O(1) is the correct answer to “What is the time complexity of search function in a hash table using a doubly linked list”. This question is standard in competitive examination syllabi for Hashing.

Double hashing is the correct answer to “Which technique has the greatest number of probe sequences”. This question is standard in competitive examination syllabi for Hashing.

O(1) is the correct answer to “What is the time complexity of the search function in a hash table using a binary tree”. This question is standard in competitive examination syllabi for Hashing.

Collision is the correct answer to “The case in which a key other than the desired one is kept at the identified location is called”. This question is standard in competitive examination syllabi for Hashing.

hash function is the correct answer to “Which of the following is used in hash tables to determine the index of any input record”. This question is standard in competitive examination syllabi for Hashing.

It saves space is the correct answer to “How is a bit vector better compared to a normal array for implementing the hash table”. This question is standard in competitive examination syllabi for Hashing.

Ω (n) is the correct answer to “How many bits are needed to specify the single permutation by min-wise independent family”. This question is standard in competitive examination syllabi for Hashing.

A structure that maps keys to values is the correct answer to “What is a hash table”. This question is standard in competitive examination syllabi for Hashing.

O (1/k1/2) is the correct answer to “What is the expected error by the estimator Chernoff bound on the samples performed without replacement”. This question is standard in competitive examination syllabi for Hashing.

O(1) is the correct answer to “What is the time complexity of delete function in the hash table using list head”. This question is standard in competitive examination syllabi for Hashing.

67 is the correct answer to “What is the value of h(k) for the key 123456? Given: p=14, s=2654435769, w=32”. This question is standard in competitive examination syllabi for Hashing.