Data Abstraction Additional Practice Test — Class 12 Computer Science

12th Standard Computer Science — Data Abstraction: Additional Online Practice Test

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Which of the following concepts in computer science provides modularity by splitting a program into many modules?

A.Abstraction B.Concrete representation C.Iteration D.Sequence

Which of the following is an example of an abstract data type (ADT) that can be implemented using either a singly linked list or a doubly linked list?

A.List ADT B.Float datatype C.Integer datatype D.Character literal

In the city abstract data type, which function acts as the constructor to build a city object containing name, latitude, and longitude?

A.getname(city) B.getlat(city) C.getlon(city) D.makecity(name, lat, lon)

When implementing a slope abstract data type with point objects, if the selector xcoord(point) is defined as return point, what value does it retrieve?

A.The first element representing the x-coordinate B.The second element representing the y-coordinate C.The difference between coordinates D.The slope of the line

What programming design strategy involves forming beliefs and making decisions according to what is pleasing to imagine rather than appealing to reality?

A.Systematic planning B.Wishful thinking C.Concrete modeling D.Object instantiation

Why does dividing integers directly to represent a rational number lose exact precision in computer systems?

A.It produces an integer approximation B.It produces a float approximation C.It raises a divide-by-zero compiler error D.It restricts access to memory cells

If a list is defined as lst :=, which method of accessing elements unpacks the list and binds each element to a different name, such as x, y := lst?

A.Element selection operator B.Single assignment C.Multiple assignment D.Nested representation

Mathematically, a list lst containing values 10 and 20 can be represented as a set of pairs. What are the index-value pairs in this representation?

A.lst[(1, 10), (2, 20)] B.lst[(10, 0), (20, 1)] C.lst[(0, 10), (1, 20)] D.lst[(0, 20), (1, 10)]

Which compound structure provided by Python can be used to implement the mathematical concept of a 'Pair'?

A.Function or Procedure B.List or Tuple C.Class or Object D.Interface or Implementation

Q10

If the selector numer(x) for a rational number represented as a list pair x is defined as return x, what does denom(x) return?

A.return x B.return x C.return x D.return x[-1]

Q11

What is the key functional difference between a Python list and a Python tuple?

A.Lists are immutable, whereas tuples are mutable. B.Lists are mutable, whereas tuples are immutable. C.Lists use parentheses, whereas tuples use square brackets. D.Lists cannot store multiple values of different datatypes.

Q12

Why is a list representation like person := ['Padmashri', 'Baskar', '994-222-1234', 'compsci@gmail.com'] considered insufficient for complex multi-item objects?

A.It cannot store string elements B.It does not explicitly specify what each part represents C.It requires a lot of memory space D.It is immutable and cannot be modified

Q13

In Object-Oriented Programming, when a class Person is used to create an instance p1, what is the class analogously compared to?

A.A baked cookie B.A cookie cutter C.A mixing bowl D.A recipe book

Q14

What does a class define a data abstraction as, combining two key aspects together?

A.Public and private access specifiers B.Bundled data and the functions that work on that data C.Constructors and destructors of an interface D.Linked lists and binary trees

Q15

Functions defined inside a class that are designed to modify or analyze the class data are said to be what with respect to the class?

A.Independent B.Subordinate C.Constructors D.Selectors

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About this Data Abstraction test

This free online practice test covers Data Abstraction from the 12th Standard Computer Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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