DEHRADUN PUBLIC SCHOOL ASSIGNMENT SUBJECT-INFORMATICS PRACTICES (065) CLASS XI
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1 DEHRADUN PUBLIC SCHOOL ASSIGNMENT SUBJECT-INFORMATICS PRACTICES (065) CLASS XI CH-1 HARDWARE CONCEPTS Q1. Arrange the following units of memory in ascending order of their capacity: Terabyte, Petabyte, Megabyte, gigabyte Q2.What are memory devices? Differentiate between a RAM and a ROM. Q3.Ramesh works for Info Solutions Bangalore. He was signing in the attendance register daily till now. Recently his employers started taking attendance by registering his thumb impression on an electronic device. Name the category of these devices used for individual s recognition using physical traits like thumb impression or retina recognition? Q4.Expand the following terms: a) PDAs b) MICR c) DVD d) TFT e) CRT f)cd-rom g) DVD-R Q5.What is a port? Name two ports that allow wireless connection of devices. Q6.Write a short note on Encoding Scheme. Q7.What are the benefits of e-waste recycling? CH-2 SOFTWARE CONCEPTS Q8. Compare utilities and packages. Q9. What is a virus? What is antivirus software? Q10.What is the significance of a firewall in a computer security scheme? Q11.What is operating system? Explain the different types of Operating System. Q12.What is Application software? Give example. Q13. What is a Threat? Name some threat to computer security. CHAPTER 3. GETTING STARTED WITH PROGRAMMING USING IDE Q14. How is ordinary compilation different from Java compilation? Q15.What is Write Once Run Anywhere characteristic of Java? Q16.What is the relationship of properties, methods and an event? Q17.What are container and child controls? Give example. Q18.What is bytecode? What are RAD tools? CHAPTER 4. PROGRAMMING FUNDAMENTALS Q19. Predict the output: a. double a= 3.0; double b=4.0; double c= Math.sqrt(a*a + b*b); System.out.println( c= +c); b. int y=0; int x = y++ + 2*y; System.out.println( x = +x); c. int x=5; int y=(5*++x)%7; System.out.println( x= +x); System.out.println( y= +y); d. int sum, t; t =3; sum = 27; sum = sum + 2*(++t); System.out.println( sum + sum); Q20. Distinguish between a unary, a binary and a ternary operator. Page 1 of 7
2 Q21. How are keywords different from identifiers? Q22. What are literals? How many types of integer literals are available in java? Q23. What is meant by implicit and explicit type conversion? Q24. Which class is used for using different mathematical methods in java program? CHAPTER 5. FLOW OF CONTROL Q25. What is the significance of break in a switch statement? Q26. Predict the output: a. int k=5; int l=36; while(k<=l) { k+=6;} System.out.print(k); b. int m,n=0; for (m=1;m<=4;m++){ n+=m; n--; } System.out.println ( m= +m); System.out.println ( n= +n); c. for (int i=2;i<=5;++i){ System.out.print(i + => ); for (int j=1;j<=3;++j){ System.out.print(i*j +, ); } System.out.println( ); } d. int i=0; int x=0; while(i<7) { x+=i; i+=2;} System.out.println( i = +i); System.out.println( x= +x); Q27. Write a short java code to print the factorial of the given number. The number is inputted by the interface and you can suppose the names of the control. Q28. Write a short java code to print the Fibonacci series up to n terms. 1, 2, 3, 5, 8, n. Q29. Write a java code to count the number of digits of a given number. Q30. Write a java program to swap two numbers without using the third one. Q31. Write a short java program to print the following output: (a) (b) * 1234 ** 123 *** 12 **** 1 ***** Q32. Write a short java code to print the sum of following series: Q33. Write a short java code to find the sum of the series: 1,8, Page 2 of 7
3 CHAPTER 6. JAVA IDE PROGRAMMING -I Q34. Define Object with the help of an example. Q35. Define Class with the help of an example. Q36. Write brief about JFC. Q37. Name the component classes of swing API for the following components(i) frame (ii) button (iii) panel Q38. What command would you write in actionperformed( ) event handler of a button, in order to make it exit button. Q39. Name the event listener and the event listener method that would respond to the following type of action: a. Occurs when user completes an action. b. Occurs when a component receives or loses focus. c. Occurs when the user presses a key. d. Occurs when the status of the window changes. Q40. Design an application to find out the largest number among the three floating point numbers. The following is the screen used to find largest number among three numbers: CHAPTER 7. JAVA IDE PROGRAMMING II Q41. What is the difference between radio button and checkbox component? Q42. Give the use of the following properties of the label component: a) icon b) text c) enabled Q43. Give the use of the following methods of the textfield component: a) Void settext(string) b) String gettext( ) Q44. What is the difference between a gettext( ) and getpassword( ) methods? Q45. What happens if we do not make the radio button as a part of common group button group? Q46. Give the use of the following properties of check box: a) Mnemonic b) selected Q47. Name the event which gets fired when a checkbox is selected. Q48. What do you understand by Focus? What happens when FOCUS_GAINED event and FOCUS_LOST event occurs? Q49. What is the difference between textfield and a password field? Q50. Reena has developed an application in Net Beans for the Life Line Laboratory at South Extension as shown below: Test Name Charges(Rs) Thyroid 350 TLC/DLC 100 HB 20 SGPT/SGOT 150 The charges for the test available are given in the following table: Page 3 of 7
4 i) Write the code to make the textfield for Total Amount uneditable. ii) Write code to do the following: a. Calculate and display the total amount in the corresponding text field when calculate button is clicked. b. Clear all the textfields. c. Close the application when Exit button is clicked. Q51. NHPC has different categories of workers, who are paid differently hourly rates (R). Wages are then determined after accepting the number of hours (H) one works during the week. The different classes are paid as follows: Category Hourly Rate Unskilled Rs Semi Skilled Rs Skilled Rs CHAPTER 8. JAVA IDE PROGRAMMING III Q52. Which property of list box is used to type the list values? Q53. What is the use of selectionmode property of list box? Q54. What is the difference between Combo box and List box? Q55. Give the use of the following methods: a) void clearselection( ) b) int getmaxselectionindex( ) c) Object getselectedvalues( ) d) Boolean isselectionempty( ) e) Void setselectedindices( ) Q56. A list namely mylist has selectionmode property set to SINGLE_INTERVAL. How would you obtain: a) The indices of selected values b) the selected values Q57. Write code that obtains the selected item of combobox1(cb1) and adds to the list of combobox2(cb2). Q58. Write the code for List Price Button to display the list price in textfield depending upon the item selected. Product Name List Price(Rs) Washing Machine Color Television OTG 8000 CD Player Page 4 of 7
5 Q59. Glamour Garments has developed a GUI application for their company as shown below: The company accepts payment in 3 modes- cheque, cash and credit card. The discount given as per mode of payment as follows: Mode of Payment Discount Cash 8% Cheque 7% Credit Card 0% If the Bill Amount is more than then the customer gets the additional discount of 10% on Bill Amount. a) Write code for Calculate Discount button, the discount should be calculated as per the given criteria and it should be displayed in discount textfield. b) Write code for Calculate Net Amount button, the net amount should be calculated and displayed in amount textfield. CHAPTER 9. PROGRAMMING GUIDELINES Q60. What do you mean by Syntax errors and Semantic errors? Q61. What is echo printing? Q62. Define: a)bug b) Prettyprinting c) Verification d) exception handling Q63. What do you understand by debugging? CH-10 DBMS CONCEPTS Q64. What is data redundancy? Q65.What are views? How are they useful? Q66. A relation in MySQL has 5 attributes and 8 tuples. What will be the cardinality and degree of the relation? Q67.Define the following: i)tuple ii)degree iii)cardinality iv) Attribute CH-11 INTRODUCTION TO MYSQL Q68.What is the difference between DDL and DML? Q69. What do you understand by LAMP? Q70. What does Data Dictionary consist of? Q71. Name some table maintenance commands. Q72. What is the function of SAVEPOINT in MySQL? Q73. What do you understand by COMMIT and ROLLBACK? CH-12 SIMPLE QUERIES IN SQL Q74.What is a datatype? Name some datatypes available in Mysql. Page 5 of 7
6 Q75.Miss Neelam started working in MySQL. She want to start working in SCHOOL database which is already available. How can she make SCHOOL database as her currently working database? Q76.What is the difference in the output of SELECT statement if we write the keyword ALL in place of DISTINCT? Q77. (a)you have the following table CUSTOMER. Identify the required data types for each attribute. Cust_ID Customer Identification Number Cust_Name Customer Name Cust_Add Customer Address Bill_No Customer bill Number (b)write a SQL command to add following column in above table. Column Name Data Type Size Constraint Description Address Varchar 40 Address of the Person (c) Given is the STUDENT table write the queries for the following:- ROLLNO SNAME GENDER DOB HOUSEID FEES HOBBY 1001 RAVI M HOCKEY 1002 AMAR M SOCCER 1003 SUJA F RUMA F SKATING 1005 SIJU M ARUNA F HOCKEY 1007 HYDER M SOCCER 1008 RAINA M SOCCER i. Write SQL query to display the details of STUDENT table in the descending order of the FEES. ii. Write SQL query to display the SNAME, GENDER and FEES for all the students whose HOUSEID is either 10 or 11 or 13. iii. Write SQL query to display the SNAME, FEES and HOBBY for all the students who do not have a hobby. iv. Write SQL query to display the SNAME and GENDER for all the students who are paying fees in the range of 600 to 800. v. Write SQL query to display the ROLLNO and SNAME for all the students whose SNAME is ending with A. vi. Write SQL query to display the STUDENT details whose year of birth is CH-13. MYSQL FUNCTIONS Q78. What will be the output of the following SQL commands: (i) Select concat( information, technology ) (ii) Select instr( computer, er ) (iii) Select truncate( , 2) (iv) Select mod(5,2) (v) Select substr( information technology,-5) (vi) Select dayofmonth( ); (vii) Select month( ); Q79. Write SQL statements for the following: i) Display the length of the string "Informatics Practices". ii) Display the position of "My" in "Enjoying MySQL". iii) Display the name of current month. iv) Using the three separate words "We," "study," and "MySQL," produce the following output: "We study MySQL". Page 6 of 7
7 Q80. Priya wants to extract a substring starting from a specified position, which function she should use for the same. Q81.Rajat wants to search for a given second string into the given first string, which function he should use for the same. CH-14. TABLE CREATION AND DATA MANIPULATION COMMANDS Q82. Differentiate between Primary Key constraint and Foreign Key constraint of table with example. Q83. What are the differences between ALTER and UPDATE commands of SQL? Q84. Study the given HOSPITAL table and write the DML queries that follow. PID PNAME DOA DOD WARD FEES 1001 RAVI SURGERY AMAR MEDICINE SUJA SURGERY RUMA OPTHALMO SIJU MEDICINE ARUNA NEURO 3500 i) Write a query to Increase the FEES by 200 for all patients whose WARD is SURGERY. ii) Write a query to delete all the rows from the HOSPITAL table whose WARD is NEURO. Q85. Give one word answer to the following questions: i. An attribute that is a Primary key of one table and used as non key attribute in another table. ii. A SQL command used to display the structure of a table in MySQL iii. A SQL command used to remove duplicate rows from a SELECT query. iv. An SQL query that uses SET command to make modification on table data. Q86. Shubham wants when he does not enter a value for the column, automatically a value should be inserted in it. Which constraint he should use for the same. Q87. What is the error in the following statement: a) UPDATE emp; b) DELETE ALL FROM TABLE EMPL; c) DROP EMPL; d) MODIFY TABLE EMP ADD ( VARCHAR(20)); CH-15. IT APPLICATIONS Q88.How e Governance has benefited the Common man? Q89. What do you understand by MOOC? Enlist two websites that offers e governance. Q90.What are the advantages of Net Banking? x Page 7 of 7
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