13. What is the meaning of Open Source in the term Open Source Database Management. 14. Difference between Proprietary and Open Source Software.

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1 Dehradun Public School I-Term Assignment ( ) Subject-Informatics Practices (065) Class -XII Chapter 1. Computer Networking 1. How is firewall useful in ensuring network security? [CBSE 2016] 2. State reason why Star topology requires more cable length than bus topology [CBSE 2016] 3. Distinguish between LAN and WAN. [CBSE 2015] 4. Ms. Kavya, General Manager of United Nations Corporate recently discovered that the communication between her company s account office and HR office is extremely slow and signals drop quite frequently. These offices are 120 metres away from each other and connected by an Ethernet cable. a. Suggest her a device, which can be installed in between the offices for smooth communication. b. What type of network is formed by having this kind of connectivity out of LAN, MAN and WAN? [CBSE 2012] 5. What do you understand by domain resolution? [CBSE 2015] 6. What is MAC address? What is the difference between MAC and IP address? 7. Write one advantage and disadvantage of optical fibre. [CBSE 2014] 8. Write one example of IP address in a network. [CBSE 2015] 9. What is the purpose of modem in a network? [CBSE 2015] Chapter 2. Open Source Concepts 10. What is the objective behind developing UNICODE? [CBSE 2014] 11. Name any four Indian scripts included in UNICODE. [CBSE 2011] 12. What is the full form of the following: [CBSE 2013][CBSE 2014] i) ODF ii) HTTP iii) OSI iv) FLOSS 13. What is the meaning of Open Source in the term Open Source Database Management System? [CBSE 2016] 14. Difference between Proprietary and Open Source Software. [CBSE 2011][CBSE 2014][CBSE 2015] 15. What functions does Team Viewer software performs. Chapter 3. Java GUI Programming Revision Tour -I 16. In a switch statement, what is the purpose of default section? [CBSE 2015] 17. Re-write the following if-else segment using switch case statement: char ch = P ; if ((ch== p ) (ch= = P )) System.out.println( Platinum ); if (ch= = g ) (ch == G ) System.out.println( Gold ); if(ch == S ) System.out.println( Silver ); else System.out.println( Normal ); 18. What will be the value of x and y after the execution of the following code: int x,y=0; for (x=1;x<=5; ++x) y = x++; --y; 19. Write java code that takes the value for a number (n) in jtextfield1 and cube (n*n*n) of it to be displayed in jtextfield2. [CBSE 2012] Page 1 of 7

2 20. Rewrite the following code using if statement: int c=jcombobox1.getselectedindex( ); switch( c) case 0: FinalAmt = BillAmt;break; case1: FinalAmt = 0.9*BillAmt;break; case 2: FinalAmt = 0.8*BillAmt; break; default: FinalAmt=BillAmt; 21. What is the purpose of parseint( ) method. [CBSE 2016] 22. Give the output of the following Java code: [CBSE 2014] String name= Chennai Express ; int TM=name.length(),TN; TN=80-TM; jtextfield2.settext (Integer.toString (TM)); jtextfield3.settext (Integer.toString (TN)); 23. What will be the displayed in jtextfield1 and jtextfield2 after the execution of the following code? [CBSE 2013] int Last,First=3,Second=5; Last=First+Second++; jtextfield1.settext(integer.tostring(last)); jtextfield2.settext(integer.tostring(second)); 24. The following code has some error(s).rewrite the correct code underlining all the corrections made: int num1 = Integer.parseint(jTextField1.gettext()): string num2 = Integer.parseInt(jTextfield2.getText()); int sum = num1+num2; jlabel1.settext (sum); 25. Rewrite the following program using a for loop: int i = 1,sum = 0; while(i<10) sum + =i; i+=2; 26. Observe the following code carefully and find which statement will never get executed in the code : int Count = 1 ; //Statement 1 do //Statement 2 //Statement 3 if (Count < 15 ) //Statement 4 jtextfield1.settext ( Jump ) ; //Statement 5 else //Statement 6 jtextfield1.settext ( Stop ) ; //Statement 7 Count += 4 ; //Statement 8 //Statement 9 while ( t <= 15 ) ; //Statement How many times will the following loops execute? Which one of them is Entry Controlled and which one is Exit Controlled? Loop1 int i=10, sum=0 ; while(i>1) sum+=i; i-=3; Page 2 of 7 Loop2 int i=10, sum=0 ; do sum+=i; i-=3; while(i>1);

3 Chapter 4. Java GUI Programming Revision Tour -II 28. Write Java statement to extract selected item from a given listbox named jlist1 [CBSE 2016] 29. What is the difference between jtextfield and jpasswordfield components? [CBSE 2015] 30. Write a statement to make jtextarea1 un-editable. [CBSE 2013] 31. Write a statement in Java to declare a String type variable with a name City. [CBSE 2014] 32. What will be the content of the jtextarea1 after executing the following code: for(int C=1;C<=4;C++) jtextarea1.settext (jtextarea1.gettext ( ) + + Integer. tostring(c*c)); [CBSE 2012] 33. What will be displayed in jtextarea after executing the following statement? [CBSE 2011] jtextarea1.settext( Live\nIn Peace\t and Harmony ); 34. Given a string object named Pay having value as stored in it.obtain the output of the following: JOptionPane.showMessage Dialog(null, +Pay.Length( )+Integer.parseInt(Pay)); [CBSE 2012] 35. Aditya is a programmer at Edudel enterprises. He created the following GUI in NetBeans. Help him to write code in java for the following: [CBSE 2013] a) To calculate Total marks obtained and display in TextField on the click of command button Get Total. Assume there are three subjects. b) To calculate Grade obtained and display in TextField on the click of command button Get Grade. Criteria for Grade calculation is given below: Marks Grade Above 80 A Above 65 and <=80 B Above 50 and <=65 C <=50 D c) To stop execution and exit from the application on the click of command button Exit. 36. Mr. Radhey Shyam Bansal the owner of the Kiddi Land Enterprises has asked his programmer Ekta to develop the following GUI in Netbeans.Mr. Bansal accepts payment through three types of credit cards. The discount is given according to the following scheme: [CBSE 2011] Type Of Card Platinum Gold Silver Discount 20% of amount 15% of amount 10% of amount Page 3 of 7

4 If the Bill amount is more than Rs. 25,000 then the customer gets an additional discount of 5%.Write Java code for the following: a) To assign Additional Discount as 0 (jtextfield4) and net Amount as 0 (jtextfield5). Also set them as un-editable. b) [When Calculate Discount (jbutton1) is clicked] To calculate discount as per the given criteria and display the same in jtextfield3.to assign Additional Discount (jtextfield4) as 5% of amount (jtextfield2) as per the above condition. c) [ When Calculate Net Amount (jbutton2) button is clicked] To calculate net Amount as[totalcost (jtextfield2)-discount(jtextfield3)-additional discount(jtextfield4)].to display the Net Amount in jtextfield5. Chapter 5. Java GUI Programming Revision Tour -III 37. Define Object Oriented Programming. [CBSE 2014] 38. Define Class with reference to Object Oriented Programming. 39. Consider the following java class: public class Date public int day; public int month; public int year; public Date(int d,int m,int y) day = d; month = m; year = y; i) How many instance variables does it have? ii) Create a Date Object corresponding to 9 th June Chapter 6. Commonly Used Libraries 40. What will be the content of F1 and F2 after the code is executed: [CBSE 2014] String F1= Hello, String F2= Friend ; F1=F1.concat (F2); 41. Predict the output : string Subject = Informatics Practices ; jtextfield1.settext (Subject. Length ( ) ); 42. Predict the output : String Text2, Text1; Text1 = Good Morning ; Text2 = India ; Text1= Text2.concat (Text1); Chapter 7.Concept of Inheritance 43. Explain the concept of Inheritance with the help of example. [CBSE 2014] 44. Illustrate the concept of function overloading with the help of an example. Page 4 of 7

5 Chapter 8.Database Connectivity to MySQL 45. Briefly explain the concept of ResultSet method. Also, discuss the next ( ) and first ( ) methods. Write appropriate java statement to help him in performing the same. [CBSE 2012] 46. What is the difference between executequery( ) and executeupdate( ) methods? 47. What is Connection? 48. Explain ODBC and JDBC. 49. Name two commonly used drivers used for database connectivity from Java application Chapter 13.MySQL Revision Tour 50. Write two examples of DBMS software. [CBSE 2014] 51. Write MySQL command to open an existing database. [CBSE 2012] 52. Ms. Akansha wants to remove the entire contents of a table AIRLINES along with its structure to release the storage space. What MySQL statement should she use? [CBSE 2012] 53. What is the purpose of ALTER TABLE command in MySql? How is it different from UPDATE command? [CBSE 2011] 54. A table STUDENT has 4 rows and 2 columns and another table TEACHER has 3 row and 4 columns. How many rows and columns will be there if we obtain the Cartesian product of these two tables? 55. Consider the table: [CBSE 2016] Table:Company CompanyCode Donations C C102 NULL C C What output will be displayed by the following SQL statement? SELECT AVG(Donations) FROM Company; 56. What is the difference between % and _ wild card characters with reference to LIKE clause of MySQL? 57. Write SQL commands for the following on the basis of given table: Table:Library No. Title Author Type Pub Qty Price 1. Data Structure Lipschutz DS McGraw Computer French FND Galgotia 2 75 Science 3. Advanced Pascal Schildt PROG McGraw Dbase dummies Palmer DBMS PustakM Mastering C++ Gurewich PROG BPB (i) Write a query to display the list of all the books with their Price. (ii) Write a query to display the books of PROG type. (iii) Write a query to display all the books sorted by price in ascending order. (iv) Write a query to display the books which are of more than Rs (v) Write a query to display the price for 100 books along with their name. (vi) Write a query to display the books which are not of FND type. (vii) Write a query to display the book of the McGraw, PustakM and BPB Publisher. (viii) Write a query to display the names of the books which start with D. Page 5 of 7

6 58. Consider the table MCA given below. Write commands in SQL for (i) to (iv) and output for (v) to (viii) Table: MCA Mno Name Address Join_Dt Fee Semester 1001 Rahul 12,Vasant Kunj I 1002 Amit 187, R.K.Puram II 1003 Rakhi B6,Lajpat Nagar I 1004 Suhas 345,Nabi Karim III 1005 Deepika 10,Geeta colony IV 1006 Harish L-12,Preet vihar III 1007 Aparna H12, Hari Nagar I (i) To display all information from the table MCA. (ii) To display Mno and Name of those student who joined after 31 st Jan (iii) To display Name, fee and semester of those student who are in III semester. (iv) To display the name of students whose name has last alphabet as A. (v) Select Avg(Fee) from MCA where Semester = I ; (vi) Select Max(Fee) from MCA where Name like a%. (vii) Select count(distinct semester) from MCA. (viii) Select Name from MCA where name like %n ; Chapter 15.More on SQL-Grouping Records and Table Joins 59. Mr. Shankar created a table VEHICLE with 3 rows and 4 columns. He added 1 more rows to it and deleted one column. What is the Cardinality and Degree of the Table VEHICLE? 60. Consider the tables Employee and Project given below: Table: Employee Name Gender Designation P_Code Rahul M Programmer 2 Sanjana F Analyst 1 Radhika F Programmer 1 Anuradha F Analyst 3 Harish M Analyst 2 Table: Project P_code P_Name Size 1 Financial Accounting System Large 2 Library System Medium 3 Inventory Control System Small With reference to these tables, write commands in SQL for (i) and (ii) and output for (iii). (i) Display the Name and Designation of the employess who have taken under the Library System Project. (ii) Display the Number of Employees involved in Financial Accounting System. (iii)select Name, Gender, Designation from Employee, Project where Employee.P_Code = Project.P_Code and Size = small ; 61. In a Database there are two tables: Table: ITEM Table: BRAND Item_Code Item_Name Price 111 Refrigerator 90, Television 75, Computer 42, Washing Machine 27,000 Item_Code 111 LG 222 Sony 333 HCL 444 IFB Brand_Name (i) (ii) Write MySql queries for the following: To display Item_Code, Item_Name and corresponding Brand_Name of those Items, whose Price is between and 40000(both values inclusive) To display Item_Code, Price and Brand_Name of the item, which has Item_name as Computer. Page 6 of 7

7 (iii) To increase the price of all the Items by 10%. 62. Name two Group (Aggregrate) Functions of SQL. [CBSE 2016] 63. Consider the table below: [CBSE 2016] Table : Company EMPID DEPARTMENT SALARY E101 PERSONNEL E102 ACCOUNTS E103 MARKETING E104 PERSONNEL E105 PERSONNEL E106 MARKETING Identify error(s) in the following SQL statement. Rewrite the correct SQL statement. SELECT department, salary FROM Company GROUP BY Department; x Page 7 of 7

Q13. What is the meaning of Open Source in the term Open Source Database Management

Q13. What is the meaning of Open Source in the term Open Source Database Management DEHRADUN PUBLIC SCHOOL ASSIGNMENT (2017-18) SUBJECT-INFORMATICS PRACTICES (065) CLASS - XII Chapter 1. Computer Networking Q1.How is firewall useful in ensuring network security? [CBSE 2016] Q2.How is