DSA Prelims Quiz
An 8-question medium-difficulty multiple-choice quiz covering core data structures and algorithm concepts from the provided handout.
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Quiz Questions & Answers
Review every prompt, the correct responses, and helpful context to prep for your own run-through.
Question 1: Which property best distinguishes a stack from a queue?
Elements stored in contiguous memory only
Last-In-First-Out ordering
Allows insertion anywhere in the structure
Elements cannot be removed once added
Question 2: Which statement correctly captures an abstract data type (ADT)?
A model defined by its operations and constraints, not implementation details
A memory layout fixed by the hardware
Only arrays and linked lists
A programming language's reserved keyword set
Question 3: What is the primary advantage of linked lists compared to arrays, as noted in the handout?
Automatic sorting of values
Lower memory overhead than arrays in all cases
Faster random access to elements by index
Easy insertion and removal without contiguous reallocation
Question 4: Which operation is NOT listed as a standard ADT operation for stacks in the handout?
Pop
Peek or top
Push
Enqueue
Question 5: According to the handout, what does a hash function compute?
An index (slot position) in the hash table from a search key
The memory address of a CPU register
A sorted order of records by value
The traversal order of a tree
Question 6: Which criterion is NOT listed among the characteristics of a correct algorithm?
Generality (solves every instance of the problem)
Uniqueness of results depending only on input and prior steps
Guaranteed constant-time execution for all inputs
Finiteness (must stop after finite steps)
Question 7: Which representation method is primarily intended for humans rather than machines, according to the handout?
Compiled executable
Binary encoding
Pseudocode
Machine code
Question 8: Which flowchart symbol is used to represent a decision point?
Rectangle processing symbol
Parallelogram comment symbol
Oval terminal symbol
Diamond-shaped symbol