12th Standard CBSE Computer Science Subjects Question Paper Software Subscription

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12th Standard CBSE Computer Science Chapters / Lessons

Review of C++

Object Oriented Programming in C++

constructor and Destructor

Inheritance

Data File Handling in C++

Data Structure and Pointers

Array

Linked List and Stack

Queue

Database and SQL

Structured Query Language

Boolean Algebra

Communication Technologies

Revision of the Basics of Python

Functions

File Handling

Using Python Libraries

Data Structures

Computer Networks

Data Base Management

Structured Query Language (SQL)

Interface of Python with an SQL Database

12th Standard CBSE Computer Science Chapters / Lessons Syllabus

Object Oriented Programming with Python

Concept of Object Oriented Programming: Data Hiding, Data Encapsulation, Class and Object, Polymorphism, inheritance, advantages of Object Oriented Programming over earlier programming methodologies
Classes: Defining classes (attributes, methods), creating instance objects, accessing attributes and methods, using built in class attributes (dict, doc, name, module, bases), Constructor( _ _init()_ _, _ _del()_ _ and _ _ str()_ _) methods in a class, private attributes (limited support), importance of “self” (acts as a pointer to current calling object) operator overloading with methods.
Inheritance:
Concept of base class and derived class: Single, multilevel and multiple inheritance- Overriding methods, using super( ) in derived class to invoke _ _init()_ _ or overridden methods of parent class.

Advance Programming with Python(P)

Linear List Manipulation: Sequential allocation, traversal,insertion of an element in a sorted list, deletion of an element from the list, searching (linear, binary), sorting (insertion, selection, bubble).
Stacks (List Implementation): Introduction to stack (LIFO Operations ), operations on stack (PUSH and POP ) and its implementation in python.
Converting expression from infix to postfix notation and evaluation of postfix expression.
Queues (List implementation) Introduction to Queue(FIFO) , Operations on Queue (INSERT and DELETE) and its implementation in Python.
Data File
Need for data file, types of data file–text and binary,opening and closing files-open( ), close( ), access modes (output, input, default), file object, access_modes, reading and writing a file read(), readline(), readlines(), write(), writelines file positions (seek(), tell()), renaming and deleting a file.,flush();
Implementation of basic file operations on text and binary file in Python: Creating/writing data into file, reading and displaying data from file, searching for particular data from a file, insertion and deletion of data from an already existing file, modification of data in file.
Error and Exceptions-NameError, IndexError, TypeError, IO Error, ImportError, ValueError, EOFError.
Generator function using Yield.

Databases and SQL(P)

Data base Concepts: Introduction to data base concepts and its need.
Relational data model: Concept of domain, tuple, relation, key, primary key, alternate key, candidate key;
Relational algebra: Selection, Projection, Union and Cartesian product;
Structured Query Language:
General Concepts: Advantages of using SQL, Data Definition Language and Data Manipulation Language;
Data Types: NUMBER/DECIMAL, CHARACTER/VARCHAR/VARCHAR2, DATE;
SQL COMMANDS: CREATE TABLE, DROP TABLE, ALTER TABLE, UPDATE ….SET…., INSERT, DELETE; SELECT, DISTINCT, FROM, WHERE, IN, BETWEEN, GROUP BY, HAVING, ORDER BY;
SQL functions: : SUM ( ), AVG ( ), COUNT ( ), MAX ( ) AND MIN ( ); Obtaining results (SELECT query) from 2 tables using equi-join, Cartesian product and Union

Boolean Algebra(P)

Role of Logical Operations in Computing.
Binary-valued Quantities, Boolean Variable, Boolean Constant and Boolean Operators: AND, OR, NOT; Truth Tables; Closure Property, Commutative Law, Associative Law, Identity law, Inverse Law, Principle of Duality, Idempotent Law, Distributive Law, Absorption Law, Involution Law, DeMorgan’s Law and their applications;
Obtaining Sum of Product (SOP) and Product of Sum (POS) form the Truth Table, Reducing Boolean Expression (SOP and POS) to its minimal form, Use of Karnaugh Map for minimization of Boolean expressions (up to 4 variables);
Application of Boolean Logic: Digital electronic circuit design using basic Logic Gates (NOT, AND, OR, NAND, NOR) - Use of Boolean operators (NOT, AND, OR) in SQL SELECT statements - Use of Boolean operators (AND, OR) in search engine queries.

Communication Technologies(P)

Evolution of Networking: ARPANET, Internet, Interspace Different ways of sending data across the network with reference to switching techniques (Circuit and Packet switching).
Data Communication terminologies: Concept of Channel, Bandwidth (Hz, KHz, MHz) and Data transfer rate (bps, Kbps, Mbps, Gbps, Tbps).
Transmission media: Twisted pair cable, coaxial cable, optical fiber, infrared, radio link, microwave link and satellite link.
Network devices: Modem, RJ45 connector, Ethernet Card, Router, Switch, Gateway, wifi card.
Network Topologies and types: Bus, Star, Tree, PAN, LAN, WAN, MAN.
Network Protocol: TCP/IP, File Transfer Protocol (FTP), PPP, SMTP, POP3 Remote Login (Talent), and Internet Wireless/Mobile Communication protocol such as GSM, CDMA, GPRS, and WLL.
Mobile Telecommunication Technologies : 1G, 2G, 3G and 4G; Mobile processors; - Electronic mail protocols such as SMTP, POP3 - Protocols for Chat and Video Conferencing VOIP - Wireless technologies such as Wi-Fi and WiMax
Network Security Concepts:
Threats and prevention from Viruses, Worms, Trojan horse, Spams - Use of Cookies, Protection using Firewall, https; - India IT Act, Cyber Law, Cyber Crimes, IPR issues, hacking.
Introduction To Web services: WWW, Hyper Text Markup Language (HTML), Extensible Markup Language (XML); Hyper Text Transfer Protocol (HTTP); Domain Names; URL; Website, Web browser, Web Servers; Web Hosting, Web Scripting – Client side (VB Script, Java Script, PHP) and Server side (ASP, JSP, PHP), Web 2.0 (for social networking) - E-commerce payment transactions using online banking, mobile banking and payment apps and services.

Object Oriented Programming in C++

Object Oriented Programming: Concept of Object Oriented Programming – Data hiding, Data encapsulation, Class and Object, Abstract class and Concrete class, Polymorphism (Implementation of polymorphism using Function overloading as an example in C++); Inheritance, Advantages of Object Oriented Programming over earlier programming methodologies,
Implementation of Object Oriented Programming concepts in C++:Definition of a class, Member of a class – Data Members and Member Functions (methods), Using Private and Public visibility modes, default visibility mode (private); Member function definition: inside class definition and outside class definition using scope resolution operator (::); accessing members from object (s), Objects as function arguments–pass by value and pass by reference;
Constructor and Destructor: Constructor: special characteristics, declaration and definition of a constructor, default constructor, overloaded constructors, copy constructor, constructor with default arguments;
Destructor: Special Characteristics, declaration and definition of destructor;
Inheritance (Extending Classes): Concept of Inheritances, Base Class, Derived classes, protected visibility mode; Single level inheritance, Multilevel inheritance and Multiple inheritance, Privately derived, publicly derived and Protectedly derived class, accessibility of members from objects and within derived class (es);
Data File Handling: Need for a data file, Types of data files – Text file and Binary file;
Text File: Basic file operations on text file: Creating/Writing text into file, Reading and Manipulation of text from an already existing text File (accessing sequentially).
Binary File: Creation of file, Writing data into file, Searching for required data from file, Appending data to a file, Insertion of data in sorted file, Deletion of data from file, Modification of data in a file; Implementation of above mentioned data file handling in C++; Components of C++ to be used with file handling: Header file: fstream.h; ifstream, ofstream, classes; Opening a text file in—in, out, and app modes; Using cascading operators (>>,<<)for writing text to the file and reading text from the file; open (), get (), read (), put (), write(), getline() and close() functions; Detecting end-of-file (with or without using eof() function), tellg(), tellp(), seekg(), seekp();
Pointers:
Introduction to Pointer, Declaration and Initialization of Pointer; Dynamic memory allocation/deallocation operators: new, delete; Pointers and Arrays: Array of Pointers, Pointer to an array (1 dimensional array), Function returning a pointer, Reference variables and use of alias; Function call by reference. Pointer to structure: De-reference/Deference operator: *, ->; self referential structure;

Data Structures(C++)

Introduction to data structure- array, stack queues primitive and non-primitive data structure, linear and non-linear structure, static and dynamic data structure.
Arrays:
One and two Dimensional arrays: Sequential allocation and address calculation;
One dimensional array: Traversal, Searching (Linear, Binary Search), Insertion of an element in an array, deletion of an element from an array, Sorting (Insertion, Selection, Bubble)
Two-dimensional arrays: Traversal Finding sum/difference of two NxM arrays containing numeric values, Interchanging Row and Column elements in a two-dimensional array;
Stack (Array and Linked implementation of Stack):
Introduction to stack (LIFO: Last in First out Operations) - Operations on stack (PUSH and POP) and its Implementation in C++, Converting expressions from INFIX to POSTFIX notation and evaluation of Postfix expression;
Queue: (Array and Linked Implementation)
Introduction to Queue (FIFO: First in First out operations) Operations on Queue (Insert and Delete and its Implementation in C++, circular queue using array.