Data Structures MCQs with Answers
Practice important Data Structures MCQs with answers and explanations.
Multiple Choice Questions
Q601: What type of array maintains data in a sorted order?
- A: Unsorted Sequential Array
- B: Sorted Sequential Array
- C: Hash Table
- D: Linked List
View Answer
B
Q602: In a table, what term is used for the unique identifier for each entry?
- A: Field
- B: Record
- C: Key
- D: Value
View Answer
C
Q603: How does binary search improve performance compared to linear search in a sorted array?
- A: By reducing the number of comparisons
- B: By increasing the number of comparisons
- C: By using hash functions
- D: By directly accessing the data
View Answer
A
Q604: What is the key feature of the unsorted sequential array implementation?
- A: Fast insertion and slow searching
- B: Slow insertion and fast searching
- C: Fast sorting of data
- D: Immediate access to any record
View Answer
A
Q605: Which operation in a sorted array requires shifting of elements to maintain order?
- A: Insert
- B: Find
- C: Remove
- D: Update
View Answer
A
Q606: How does a dictionary differ from a traditional table in programming?
- A: It stores data in a tabular format
- B: It associates keys with values
- C: It requires a fixed size
- D: It only supports numerical data
View Answer
B
Q607: What does a table record or tuple represent?
- A: A single field
- B: A collection of fields
- C: A key-value pair
- D: An operation on data
View Answer
B
Q608: In the context of Table ADT, what is the typical complexity of the remove operation?
- A: O(1)
- B: O(n)
- C: O(log n)
- D: O(n log n)
View Answer
B
Q609: What does the "find" method do in the context of a table ADT?
- A: Deletes a record from the table
- B: Finds a record associated with a key
- C: Inserts a new record into the table
- D: Updates an existing record
View Answer
B
Q610: What does the term "tuple" refer to in database terminology?
- A: A column in a table
- B: A row in a table
- C: A field in a record
- D: A key in a table
View Answer
B