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Data Structures

Practice Data Structures MCQs for Pakistan exams (CSS, FPSC, PPSC, NTS) — 102 practice questions with answers and explanations.

The concept in which an abstract data structure where each element has a priority, and elements are served according to that priority rather than arrival order is best known as which of these terms?
Identify the correct definition of Priority queue.
What term describes the following? a data structure that allows insertion and removal of elements from both the front and the back.
In computer science, Dequeue refers to which of the following?
Select the correct name for: a matrix in which most of the elements are zero, often stored using specialized structures to save memory.
Which statement correctly explains Sparse matrix?
Which concept is defined as follows: a way of representing a graph where each vertex stores a list of its neighboring vertices?
What is Adjacency list primarily used for?
The following statement describes a specific concept. What is it called? a way of representing a graph using a 2D matrix where each cell indicates whether an edge exists between two vertices.
Select the accurate description of Adjacency matrix.
Which term refers to a self-balancing tree data structure that maintains sorted data and allows searches, insertions, and deletions in logarithmic time, commonly used in databases?
What does B-tree refer to?
What is the name for a probabilistic data structure that uses multiple layers of linked lists to allow fast search within an ordered sequence?
Which of the following best describes Skip list?
Identify the correct concept described as: a measure in a hash table calculated as the number of stored elements divided by the number of buckets.
Load factor is best defined as which of the following?
A situation in a hash table where two different keys produce the same hash value. What is this concept called?
Choose the correct description of Hash collision.
Which of the following best names the concept in which a collision resolution technique in hashing that searches sequentially for the next open slot in the table?
What is the function or purpose of Linear probing?

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