What is the function or purpose of Hash table?
Difficulty: Hard
About this MCQ
This Hard Data Structures question asks: What is the function or purpose of Hash table? The correct choice is A. A data structure that maps keys to values using a hash function for fast lookup.. Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
Data Structures items like this one are written for Pakistan exams such as CSS, FPSC, PPSC, and NTS. The difficulty label is a hint about how much of the topic the stem assumes, not a score. Tags and exam names, when they are present, tell you where else the same idea is tested. Previous and next links stay in Data Structures so you can continue the subject. Related questions point at nearby stems if you want another angle on the same idea.
Treat the explanation as part of the question, not a footnote. If you missed it, reread the stem against the correct option before you open the next Data Structures item. A timed quiz is the same pool with a clock and a score. A past paper is a full sitting rather than this single question.
- A. A data structure that maps keys to values using a hash function for fast lookup. ✓
- B. A linear data structure that follows the First-In-First-Out (FIFO) principle.
Why not B: “A linear data structure that follows the First-In-First-Out (FIFO) principle.” does not fit this question. The answer is A data structure that maps keys to values using a hash function for fast lookup..
- C. A linked list where each node has pointers to both the next and previous nodes.
Why not C: “A linked list where each node has pointers to both the next and previous nodes.” does not fit this question. The answer is A data structure that maps keys to values using a hash function for fast lookup..
- D. A structure that stores elements in contiguous memory locations, allowing constant-time indexed access.
Why not D: “A structure that stores elements in contiguous memory locations, allowing constant-time indexed access.” does not fit this question. The answer is A data structure that maps keys to values using a hash function for fast lookup..
Correct answer
A. A data structure that maps keys to values using a hash function for fast lookup.
Explanation
A data structure that maps keys to values using a hash function for fast lookup is the value that answers What is the function or purpose of Hash table option A Option B A linear data structure that follows the First-In-First-Out FIFO principle does not fit this question Option C A linked list where each node has pointers to both the next and previous nodes does not fit this question Option D A structure that stores elements in contiguous memory locations allowing constant-time indexed access does not fit this question For this Data Structures question the accepted answer is A data structure that maps keys to values using a hash.
Source: Data Structures Official Reference Guide
Tags: computer science, data structures, algorithms, programming
Submitted by: MCQsHub Editorial
Related MCQs
- Choose the correct description of Binary tree.
- Identify the correct definition of Graph.
- A tree data structure in which each node has at most two children. What is this concept called?
- What term describes the following? a tree-based structure that satisfies the heap property, often used to impl...
- Linked list is best defined as which of the following?
- In computer science, Heap refers to which of the following?