Computer Science Class II PUC Quiz
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Questions and Answers

What is another name for a derived class?

  • Sub class (correct)
  • Base class
  • Super class
  • Main class

    • What is a distinct header for each column of a table called?

  • Attribute (correct)
  • Tuple
  • Domain
  • Record

    • Which of the following is an unsupported C++ expression with respect to pointer ptr?

  • ptr * 100 (correct)
  • ptr++
  • ptr - 100
  • ptr + 80

    • Which command is a part of Data Query Language (DQL)?

    <p>SELECT</p> Signup and view all the answers

    What is the correct expansion of TCP?

    <p>Transmission Control Protocol</p> Signup and view all the answers

    Which of the following is not classified as a web browser?

    <p>Telnet</p> Signup and view all the answers

    Which of the following is an example of Full Duplex communication mode?

    <p>Telephone</p> Signup and view all the answers

    Who is credited with the invention of HTML?

    <p>Tim Berners Lee</p> Signup and view all the answers

    Which port transfers eight bits of data at a time?

    <p>Parallel port</p> Signup and view all the answers

    According to the idempotent law, which statement is true?

    <p>$X ullet X = X$</p> Signup and view all the answers

    If an array is a collection of homogenous elements, which statement is correct?

    <p>A is True and B is False</p> Signup and view all the answers

    Which of the following statements about function overloading are correct?

    <p>i), iii) and iv) are correct</p> Signup and view all the answers

    What type of error is present in the given program segment regarding class declaration?

    <p>Error due to semicolon missing at the data member declaration line</p> Signup and view all the answers

    Which constructor is defined as one that does not accept any arguments?

    <p>Default constructor</p> Signup and view all the answers

    What is a characteristic of the PS/2 port?

    <p>Primarily for keyboards and mice</p> Signup and view all the answers

    In the context of data structures, what statement is true about arrays?

    <p>Arrays always require a fixed size</p> Signup and view all the answers

    Which of the following is an example of a non-primitive data structure?

    <p>Array</p> Signup and view all the answers

    What is a pointer in C++?

    <p>A variable that stores a memory address</p> Signup and view all the answers

    Which operation is NOT typically performed on binary files in C++?

    <p>Compiling source code</p> Signup and view all the answers

    Which of the following best describes proprietary software?

    <p>Software owned by an individual or company that restricts usage</p> Signup and view all the answers

    What HTML tag is used to insert an image in a webpage?

    <img> Signup and view all the answers

    What type of inheritance allows a class to inherit from multiple classes?

    <p>Multiple Inheritance</p> Signup and view all the answers

    Which of the following is NOT a basic operation performed on a queue?

    <p>Delete</p> Signup and view all the answers

    What is the primary function of a destructor in a C++ class?

    <p>To release resources when an object goes out of scope</p> Signup and view all the answers

    Study Notes

    Computer Science Exam Notes - Class II PUC

    • Parallel Port: Transfers data in parallel, sending 8 bits simultaneously, providing faster data transfer speeds compared to serial ports.
    • Idempotent Law: A logic law stating that repeating an operation (e.g., ANDing a value with itself) results in the same output.
    • Array: Homogeneous data structure, meaning it stores elements of the same data type, and is considered linear since elements are accessed sequentially.
    • Constructor: Special function invoked automatically when an object of a class is created, initializing the object’s data members. Constructors can be parameterized to accept input values.
    • Derived Class: Also known as a subclass, it inherits properties and functions from a base (super) class, enabling code reusability and polymorphism.
    • Pointer: Variable storing the memory address of another variable. Allows direct manipulation of data stored in memory.
    • Attribute: Distinct header identifying each column in a table, representing a specific characteristic or property of the stored data.
    • Data Abstraction: Hides implementation details, exposing only essential functionalities to users, promoting modularity and simplifying interaction with complex systems.
    • Motherboard: Main circuit board within a computer system, housing vital components like the CPU, RAM, and expansion slots.
    • Non-primitive Data Structure: Data structure built upon primitive data types (int, char, float) to store complex data, with examples including arrays, linked lists, and trees.
    • Queue: Abstract data structure adhering to the First-In, First-Out (FIFO) principle, with operations like enqueue (adding to the rear), dequeue (removing from the front), and peek (viewing the front element).
    • Object-Oriented Programming (OOP): Programming paradigm emphasizing data abstraction, encapsulation, inheritance, and polymorphism, enabling code reusability and modularity.
    • Friend Function: Function granted access to private and protected members of a class, outside the class itself, violating information hiding but sometimes required for specific operations.
    • Destructor: Special function automatically called when an object of a class goes out of scope, performing cleanup operations and releasing resources allocated to the object.
    • Inheritance: Mechanism allowing a derived class to inherit attributes and methods from its base class, fostering code reuse and creating hierarchies of related classes.
    • Single Level Inheritance: Derived class directly inherits features from a single base class.
    • Multilevel Inheritance: Derived class inherits features from another derived class, which itself inherited from a base class.
    • SQL (Structured Query Language): Special-purpose programming language designed for managing and manipulating data in relational databases.
    • DQL (Data Query Language): Subset of SQL responsible for retrieving data from databases.
    • Full Duplex Communication: Communication mode where both parties can transmit and receive information simultaneously, enabling bidirectional and efficient data transfer.

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    Description

    Test your knowledge on fundamental computer science concepts such as parallel ports, array structures, and object-oriented programming principles. This quiz will cover essential topics for Class II PUC students, including constructors, derived classes, and pointers. Get ready to reinforce your understanding of these key concepts!

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