Typing Disciplines & ADTs MCQs

6 MCQs — Data Types MCQs

Practice Typing Disciplines & ADTs MCQs with correct answers and explanations. These questions are from the Data Types MCQs section.

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Data Types Subcategories

Arrays & Memory Layout	Characters & Strings
Floating Point	Integer Representation & Overflow
Number Systems & Literals	Pointers & References
Primitive Types & Sizes	Python Built-in Types
Structures, Unions & Enums	Type Conversion & Casting
Typing Disciplines & ADTs

Which description of JavaScript's typing is correct?

Dynamically and strongly typed
Statically and weakly typed
Statically and strongly typed
Dynamically and weakly typed

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In JavaScript, what are typeof null and typeof NaN?

"object" and "undefined"
"undefined" and "number"
"null" and "NaN"
"object" and "number"

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Which pairing of abstract data type and access order is correct?

Both are FIFO
Stack: LIFO; Queue: FIFO
Both are LIFO
Stack: FIFO; Queue: LIFO

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What is the average-case and worst-case lookup time of a hash table?

O(log n) in both cases
Average O(1); worst O(n)
O(1) in both cases
Average O(n); worst O(1)

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What is the maximum number of nodes in a binary tree of height h (where a tree with only a root has height 0)?

h²
2^(h+1) - 1
2^h
2h + 1

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Which statement best defines an Abstract Data Type (ADT)?

A data type built into the hardware
A class with only private members
A data type that cannot be instantiated
A type defined by its operations and behavior, independent of how it is implemented

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