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 Question solution of Model question 2079(Computer Science) Short question Answer 1. What is DBMS? List out its advantage and disadvantage - It stands for Database Management System. It is an application program or a software which is used to manage the data stores in database. it acts as a interface between the application program and the data store in database. Advantage of DBMS - Sharing the data  - Data independance - Providing multiple user access - Security on data can be implement 2. What is Networking? Write the advantage and disadvantage of networking - A collection of computing devices that are connected in various ways in order to communicate and share resources. It is an interconnection between multiple autonomous computers.            The term' Networking is defined in dictionary as a ' Large system consisting of many similar parts that are connected together for movement or communication between or along the parts. Advantage of Networking -It helps in sharing of r

                            School Leaving Certificate                NEB Model question of computer                                              2079 Grade: Grade XII               Subject: Computer Science       Full Marks: 50(9 Marks Obj + 41 Marks Sub)                              Time: 2 Hours                                                 Group A: Multiple Choice questions (9 x 1=9)             Tick the correct answer           (Time: 20 minutes) 1. Which of the statements are used in DDL?     A) create, alter and drop               B) create, insert and select     C) insert, update and delete          D) Delete, alter and drop 2. With SQL, how do you select all the records from a table named 'Person' where the  value of the column 'FirstName" ends with an "a"? A) SELECT * FROM Persons WHERE FirstName=‟a‟   B) SELECT * FROM Persons WHERE FirstName LIKE „a%‟ C) SELECT * FROM Persons WHERE FirstName LIKE „%a‟  D) SELECT * FROM Persons WHERE FirstName=‟%a

 Model question Soluation of Economic 2079 1. Define opportunity cost? -the second best alternative that has been sacrificed by economy agent while taking an economy decision is know as opportunity cost. 2. Define Socialist economy? -The economy in which production , distribution , investment etc. are owned and controlled by state in the interest of society is called Socialist Economy. 3. What is Market? -Market is a system where buyers and sellers come into contract for the transaction of goods and services. 4. What is market equilibrium? - It is the state in which market supply and demand balance each other and as a result prices become stable. 5. What are the two conditions for firm to be in equilibrium? -Its profit should be maximum  -Marginal cost should be equal to marginal revenue 6. What is mean by Factor pricing? -In economic theory, a factor pricing is the unit cost of using a factor of production such as labour  or physical capital. 7. Define Bank? -The financial institution

   Model Question Solution Class 12 1. How does the sunset? Answer:-  Actually, the speaker is unknown to the setting sun she doesn't know where it goes after it sets. The purple and yellow color indicate the setting of the sun, but she doesn't know what happens after it because of the lack of knowledge about sunsets.   2. What is the central idea of the essay knowledge and wisdom? - summing up, as knowledge increases, our power to do evil also increased. In order to make good use   of our knowledge, we would require more and more wisdom. We need more wisdom to make good use of our increasing knowledge. Only then can we realize our purpose of life, and achieve our aims. 3. The author has dealt with a controversial debate on human history. Why do you think history has been a major contested issue in the present world?   Ans:-  A controversial issue is the one which results in dispute and disagreement due to a different opinion. The issue on human history is also a