इस पोस्ट में आपको 12th Class Very Short answer type questions मिलेंगे जिससे आपको exam में बहुत हेल्प मिलेगी तो सभी स्टूडेंट exam से पहले very short questions को जरुर read करके जाये
Q:1 What is DBMS ?
Ans:- A database management system (DBMS) is software to create and manage databases, allowing users to create, read, update and delete data in a database.
Q:-2 Full form of DBMS
Ans Database Management System
Q:-3 What is DATA ?
Ans:- Data is a collection of raw facts which have not been processed to reveal useful information.
Q:-4 Name of Operations that need to be performed on a database.
Ans:- Defining the database, populating the database, manipulating the database, sharing the databse, protecting the database, maintaining the databse.
Q:-5 How many user of DBMS?
Ans:- DBMS is used by many types of users depending on their requirements. There are mainly four types of users:
- End Users
- Database Administrator(DBA)
- Application Programmers
- System Analyst
Q:-6 Who developed by Database?
Ans:- E.F.Codd at IBM 1970
Q:-7 In Relational model, exlain Row, Attribute, relation, domain, degree, cardinality.
Ans:- A row is called a Tuple.
Acolumn is called an Attribute.
A table is called as a Relation.
The data type of values in each column is called the Domain.
The number of attributes in a relation is called the Degree of a relation.
The number of rows in a relation is called the Cardinality of a relation.
12th Very Short Answer Type Questions ITeS
Q:-8. What are Constraints?
Ans:- Constraints, are restrictions on the values, stored in a database based on the requirements.
Q:-9 Explain the following keys constraint.
- Superkey (ii) Candidate Key (iii) Primary Key
Ans:- Super Key:- Superkey is a set of attributes in a relation, for which no two tuples in a relation state have the same combination of values.
Candidate key: Akey as described above is called candidate key of the relation.
Primary Key: One of the candidate keys may be designated as Primary key. Primary key is used to identify tuples in a relation.
Q:-10 What is SQL?
Ans:- SQL is a language that is used to manage data stored in a RDBMS. It comprises of a Data Definition Language (DDL) and a Data Manipulation Language (DML) where DDL is a F F 1.6 Structured Query Language (SQL) 9 10 language which is used to define structure and constraints of data and DML is used to insert, modify and delete data in a database.
Q:-11 Full form of SQL?
Ans:- Structure Query Language
Q:-12 Full form DDL and DML
Ans:- DDL – Data Definition Language
DML – Data Manipulation Language
Q:-13 Name any five types of Data Type in DBMS
Ans:- CHAR, VARCHAR, DATE , INTEGER, DECIMAL
Unit -2 Operating Web
Q:-1 Write the term of Web Based Application
Ans:- An application that can be accessed via a web browser, over a network connection is called a web-based application.
Q:-2 which of industry are used of web based applications?
Ans:- web-based applications are used for reservation of tickets and bookings, e-governance, online shopping with the provision of making payments online using credit/debit cards, and learning using online tutorials, tests etc.
Q:-3 What is Online Reservation Systems?
Ans:- An online reservation system allows booking /cancellation of tickets through use of Internet. A user can retrieve information and perform transaction related to reservation of ticket.
Q:-4 Write any four example of online reservation system?
Ans:- Airline ticket, Railway ticket , Bus ticket, Movie ticket, Hotel booking
Q:-5 What is E-Governance?
Ans:- E-Governance or electronic governance is the use of electronic i.e. information and communication technology (ICT) tools for governance by the government for the citizens. The ICT tools include the Internet, Local Area Network (LAN), mobiles, etc.
12th Very Short Answer Type Questions ITeS
Q:-6 Name of any two E-governance Sites.
Ans:- Some of the Central initiatives for e-governance include
- National e-Governance Division (NeGD)
- e-Governance Infrastructure
- Mission Mode Projects
- Citizens Services
- Business Services
- Government Services
Website names are – india.gov.in, goidirectory.nic.in (Government of India Web Directory)
Q:-7 What is Online Shopping?
Ans:- Online shopping is an e-commerce application where the customer can purchase goods over the Internet. There are several websites where the customer can go for online shopping.
Q:-8 Name of any two educational website.
Ans:- http://www.khanacademy.org/ , http://www.eagetutor.com/. , udacity.org, courser.org
Q:-9 What is process of project management?
Ans:- Project Management is the process of achieving the objectives of the project through a set of activities defined within the time frame, to produce the end result. It is the application of knowledge, skills,tools,and techniques to projectactivities to meetthe projectrequirements.
Q:-10 How many phases in Web Application Project?
Ans:- The process of development of web based applications is broadly categorized in four phases. During the development process, one needs to follow the following four main phases of development:
- Requirements Definition Phase
- Design Phase
- Implementation Phase
- Testing Phase
12th Very Short Answer Type Questions ITeS
Unit -3 Fundamentals of Java Programming
Q:-1 What is JAVA Language?
Ans:- Java is a very popular high level programming language and has been used widely to create various types of computer applications such as database applications, desktop applications, Web based applications, mobile applications, and games among others.
Q:-2 Explain the term of Java Compiler
Ans:- A Java compiler instead of translating Java code to machine language code, translates it into Java Bytecode (a highly optimized set of instructions).
Q:-3 What is Java Virtual Machine (JVM)
Ans:- When the bytecode (also called a Java class file) is to be run on a computer, a Java interpreter, called the Java Virtual Machine (JVM), translates the bytecode into machine code and then executes it.
Q:-4 What is need to write a Java Program?
Ans:- Text Editor and Java Compiler
Q:-5 What is IDE?
Ans:- There are a wide variety of Java Integrated Development Environments (IDEs) available in the market that come equipped with a text editor and a Java compiler thus simplifying writing, compiling and executing Java programs.
Q:-6 What are comments in Java?
Ans:- Comments are used in code by programmers to document their programs – to provide explanatory notes to other people who read the code. You can write comments in a Java program in the following two ways:
- Beginning a comment line with two consecutive forward slashes (//)
- Writing the comment between the symbols /* and */
Q:-7 What is Package in Java?
Ans:- A package in java is a group of related classes. In our program this statement declares that the HelloWorld. Java program is part of the HelloWorld package. All classes in a package can share their data and code.
Q:-8 Write the shortcut key to Execute Java Program.
Ans:- Shift-F6
Q:-9 What is Class in Java Language?
Ans:- A class in Java is a logical template to create objects that share common properties and methods.
Q:-10 What is Objects in Java?
Ans:- A Java object is a member (also called an instance) of a Java class. Each object has an identity, a behavior and a state. The state of an object is stored in fields (variables), while methods (functions) display the object’s behavior. Objects are created at runtime from templates, which are also known as classes.
Q:-11 Explain Method in Java Program?
Ans:- A method is a block of code which only runs when it is called. You can pass data, known as parameters, into a method. Methods are used to perform certain actions, and they are also known as functions.
Q:-12 What is Data types in Java language?
Ans:- Data types are divided into two groups: Primitive data types – includes byte , short , int , long , float , double , boolean and char. Non-primitive data types – such as String , Arrays and Classes.
Q:-13 What is Variable in Java?
Ans:- Variables are containers for storing data values. In Java, there are different types of variables, for example: String – stores text, such as “Hello”. String values are surrounded by double quotes. int – stores integers (whole numbers), without decimals, such as 123 or -123.
Q:-14 How many types of Data Types in Java?
Ans:- Data types are divided into two groups:
- Primitive data types – includes byte , short , int , long , float , double , boolean and char.
- Non-primitive data types – such as String , Arrays and Classes (you will learn more about these in a later chapter)
Q:-15 Explain Java Primitive Data types and Size.
Ans:
| Data Type | Size |
| Byte | 8-bit |
| Short | 16-bit |
| Int | 32-bit |
| Long | 64-bit |
| Float | 32-bit |
| Double | 64-bit |
| Char | 16-bit |
| Boolean | 1-bit |
Q:-16 Which of the method to start a variable declare in Java?
Ans:- Variable names can begin with either an alphabetic character, an underscore (_), or a dollar sign ($).Variable names must be one word. Spaces are not allowed in variable names. Underscores are allowed.
12th Very Short Answer Type Questions ITeS
Q:-17 Explain the terms of String Variable.
Ans:- A variable of the primitive data type char can be used to store a single character.
Q:-19 What is Operators in Java?
Ans:- Operators are special symbols in a programming language and perform certain specific operations. You have already seen two operator * and /.
Q:-20 What is Control Flow statement in Java?
Ans:- he statements inside your source files are generally executed from top to bottom, in the order that they appear. Control flow statements, however, break up the flow of execution by employing decision making, looping, and branching, enabling your program to conditionally execute particular blocks of code.
Q:-21 Define If-Else Statement.
Ans:- The if statement in Java lets us execute a block of code depending upon whether an expression evaluates to true or false.
Q:-22 Define Switch Statement.
Ans:- The switch statement is used to execute a block of code matching one value out of many possible values.
Q:-23 Explain While and do-while statement in Java.
Ans:- While Loop- The switch statement is used to execute a block of code matching one value out of many possible values.
Do-While Loop – The do while statement evaluates the test after executing the body of a loop.
Q:-24 Write the common errors in Loops.
Ans:- Infinite Error and Syntax Errors
Q:-25 Define For Statement .
Ans:- The for loop is the most widely used Java loop construct. For loop in Java iterates a given set of statements multiple times.
The structure of the Java for statement is as below:
for (counter=initial_value; test_condition;change counter)
{
statements
}
Q:-26 How many part of for loop and explain it
Ans:- Semicolons separate the three parts of a for loop:
- The initial_value initializes the value of the loop counter.
- The test_condition tests whether the loop should be executed again. The loop is exited when the test condition fails.
- The step updates the counter in each loop iteration.
Q:-27 What is Array in Java program?
Ans:- Arrays are variables that can hold more than one value, they can hold a list of values of the same type.
Q:-28 Explain the Object Oriented Programming.
Ans:- Java is an Object Oriented Programming (OOP) language. In an OOP language, a program is collection of objects that interact with other objects to solve a problem. Each object is an instance of a class.
Q:-29 What is Data Member in Java?
Ans:- A data member may be of any type, including classes already defined, pointers to objects of any type, or even references to objects of any type.
Q:-30 What is Method Member in Java?
Ans:- Member is an interface that reflects identifying information about a single member (a field or a method) or a constructor. See Also: Class , Field , Method , Constructor.
Q:-31 Explain the following term of Constructors?
Ans:- A data member that is declared but not initialized before using, is assigned a default value by the compiler usually either zero or null. A data member that is declared but not initialized before using, is assigned a default value by the compiler usually either zero or null.
Q:-32 Write the term Access Modifier in Java.
Ans:- Access modifiers are keywords that can be used to control the visibility of fields, methods, and constructors in a class. The four access modifiers in Java are public, protected, default, and private.
Q:-33 define the interpreter in Java.
Ans:- an Interpreter is a computer program that converts the high-level program statement into Assembly-level language.
Q:-34 What is Return Type statement in Java?
Ans:- A return statement causes the program control to transfer back to the caller of a method. Every method in Java is declared with a return type and it is mandatory for all java methods.
Q:-35 Explain Data Input Stream in Java.
Ans:- A data input stream lets an application read primitive Java data types from an underlying input stream in a machine-independent way.
Q:-36 Define Exception Handling in Java.
Ans:- An exception is an error event that can happen during the execution of a program and disrupts its normal flow. Java provides a robust and object-oriented way to handle exception scenarios known as Java Exception Handling.
Q:-37 Which of the following keyword to handle an exception in Java?
Ans:- Java try and catch
The try statement allows you to define a block of code to be tested for errors while it is being executed.
The catch statement allows you to define a block of code to be executed, if an error occurs in the try block.
Q:-38 What is Thread in Java?
Ans:- A thread is a thread of execution in a program. The Java Virtual Machine allows an application to have multiple threads of execution running concurrently. Every thread has a priority. Threads with higher priority are executed in preference to threads with lower priority.
In Java, threads can be created in two ways
1. By extending the Thread class
2. By implementing the Runnable interface
Q:-39 What is Wrapper Class?
Ans:- The wrapper class in Java provides the mechanism to convert primitive into object and object into primitive.
Q:-40 What is Java Byte Code?
Ans:- Java bytecode is the instruction set for the Java Virtual Machine. It acts similar to an assembler which is an alias representation of a C++ code.