MONTHLY TEST (JUNE 2018) CLASS XII INFORMATICS PRACTICES

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1 M.M: 40 MONTHLY TEST (JUNE 2018) CLASS XII INFORMATICS PRACTICES TIME: 80 Mins. Q1. Which of the following is not a feature of Networking? (i) Resource Sharing (ii) Reliability (iii) Uninterrupted power supply (iv) Reduced Cost Q2. The Ring topology is also called. Q3. Expand the following terms : (i) TCP/IP (ii) TLD Q4. What is the purpose of terminators in a topology? Q5. The other name for Bus Topology is. Q6. Identify the type of Topology from the following: [2] 1. In it, each node is connected with the help of a single coaxial cable. 2. In it, each node is connected with the help of independent cable with the help of a central switching. Q7. Define the following terms : (i) Node (ii) Protocol [2] Q8. What do you understand by Domain Name Resolution? [2] Q9. How it is easier to diagnose fault in Star topology than in Bus topology? [2] Q10. Which of the following are valid IP addresses? Give reason(s) if invalid. [2] (i) (ii) (iii) (iv) Q11. A School with 20 stand-alone computers is considering networking them together and adding server. State 2 advantages of doing this. [2] Q12. Draw a network layout of bus topology to connect 6 client computers and 2 server computer. [2] Q13. How is a domain name related to an IP address? [2] Q14. What do the following top level domains signify? [2] (I).com (II).org Q15. State reason why Star topology requires more cable length than Bus topology. [2] Q16. Give one advantage and one disadvantage of using Star topology over Ring Topology. [2] Q17. Centralised control in Star topology is an advantage as well a disadvantage. Explain this statement with an example. [2] Q18. What is a Server? Explain the types of Servers. [4] Q19. Explain the following topologies with line diagram: [3] (i) Fully Connected (ii) Mesh Topology (iii) Graph Topology Q20. What is MAC address? What is the difference between MAC address and IP address?(min.3 differences) [4] *****************************

2 M.M: 50 MONTHLY TEST (AUGUST 2018) CLASS XII INFORMATICS PRACTICES TIME: 90 Mins. Q1. Define Domain Name Resolution. Q2. Name any two Indian scripts included in Unicode. Q3. The twisted Pair cable is also called. Q4. Name the organization which is dedicated to the cause of promoting Open Source Software. Q5. Write the value that will be assigned to variable C after executing the following statement: C = 25 5 * 4 / ; Q6. Consider the statement : choice = Y What is the datatype of variable choice?write a Java statement to declare the variable choice. Q7. Write the value of t after the execution of the following code : int t ; int s ; s = 6 ; t = (8 * s++) % 7 ; Q8. Identify invalid variable names out of the following. State reason if invalid. (i) for (iii) salary12 (ii) salary (iv) product Q9. What is the difference between the following statements: (i) a = 10 (ii) a == 10 Q10. Vidya College has three departments that are to be connected into a network. Which of the following communication medium (out of the given options), should be used by the college for connecting their departments for very effective High Speed communication? 1. Coaxial Cable 2. Optical Fiber 3. Ethernet Cable Also name the type of the network (out of PAN/LAN/WAN ) formed. Q11. What is the function of a Modem? Q12. Write the values of num2 and num3 after execution of following code: [2] int num1, num2, num3; num1 = 100 ; num2 = num1++; num3 = ++num2 + num1++ Q13. Identify the odd one out of the following : [2] Optical Fiber/Coaxial Cable/Bluetooth/Twisted Pair Cable Give reason for your answer. Q14. Write a Java code to declare a variable named price of integer type. Assign a value 10 to this variable. Overwrite the value of price with its double value. Decrease the value of price by 5. [2] Q15. Expand the following terms : (i) FLOSS (ii) ODF (iii) GNU (iv) FSF [2] Q16. Which of the following standards are open standards and which are proprietary standards? [2] (i) SVG (ii) WMA (iii) OGG (iv) HTML Q17. Identify the network devices in each of the following cases : [2] (i) An intelligent device that connects several nodes to form a network and redirects the received information only to intended node(s).

3 (ii) A device that regenerates (amplifies) the received signal and re-transmits it to its destination. Q18. How it is easier to diagnose fault in Star topology than in Bus topology? [2] Q19. How do Computer Networks reduce hardware costs of an organization? Explain with the help of example. [2] Q20. Does Open source software only mean that the software is free of cost?give reason for your answer. [2] Q21. What is the purpose of logical address of computer? [2] Q22. List any two measure to secure a computer network. [2] Q23. Write a GUI application that accept an integer number and check its divisibility by 4 and print a message divisible by 4 or not divisible by 4. (using conditional operator) [3] Q24. Write Java code that takes the cost of a pencil from jtextfield1 and number of pencil from jtextfield2 and Calculate total amount as cost * number to be displayed in jtextfield3 and 20% service tax out of total amount in jtextfield4. [4] Q25. Write code in Java that takes principal, rate and time as input from textfields and displays simple interest. [4] (HINT: simple interest=( principal * rate * time)/100); Q26. Distinguish between following terms : [3 X 2 = 6] (i) LAN and WAN (ii) OTF and TTF (iii) Router and Bridge **************************

4 M.M: 50 MONTHLY TEST (SEPTEMBER 2018) CLASS XII INFORMATICS PRACTICES TIME: 90 Mins. General Instructions:- 1. All questions are Compulsory. Each question carries marks indicated against it. 2. Please write down the serial number of the question before attempting it. Q1. Distinguish between parseint( ) and parsedouble( )methods. Q2. In a Switch statement, what is the purpose of default section? Q3. What is the purpose of break statement in : (i) switch (ii) loops [1 +1] Q4. A employee_id consisting of 5 digits is stored in a string variable strempid. Now Mr. Deb wants to store this Id in integer type variable IntEmpId. Write a Java Statement to do this. Q5. What will be displayed in jtextfield1 and jtextfield2 after the following code is executed : int t; int x; x = 12; t = (3 * x++)/3 ; jtextfield1.settext( +t); jtextfield2.settext( +x); Q6. What message will be displayed after the execution of following code? int Age= 64, Relaxation = 4; int ModiAge = Age Relaxation ; if(modiage < 60) joptionpane.showmessagedialog(null, NOT Eligible ); else joptionpane.showmessagedialog(null, Eligible ); Q7. The expression 18%5 evaluates to. Q8. What is fall through? Q9. Write a statement in Java to declare a String type variable with a name City. Q10.What will be the final value of variable x after the following code is executed: [2] int x = 10 ; while(x > 1) x = x/3 ; ++x ; Q11. Write Java code to declare a variable named Price of integer type. Assign a value 10 to this variable. Overwrite the value of price with its double value. Decrease the value of price by 5. [2] Q12. What will be displayed in jtextfield1 after the following code is executed?also write how many times will the loop execute? [2] int a = 5 ; int b = 2 ; while(b!=0 ) r = a%b ; a = b ; b = r ; jtextfield1.settext( +a) ;

5 Q13. Write the value that will be stored in variable num and sum after execution of following code: [3] int sum=0, num = -2 ; do sum = sum + num ; num++ ; while(num < 1); Q14. The following code has error(s). Rewrite the correct code underlining all the corrections made. [3] integer counter = 0; for (num = i ; num >= 1 ; num--) ; If i % num = 0 counter = counter + 1; Q15. Write the equivalent code for the following using switch statement : [3] if(dir == 1) System.out.println( East ); else if(dir == 2) System.out.println( West ); else if(dir == 3) System.out.println( North ); else if(dir == 4) System.out.println( South ); else System.out.println( Not a direction ); Q16. How many times the following loop will execute? [3] int i, j, n; n =0 ; i =1 ; do ++n; ++i; while(i <= 5); Q17. What will be the values of num and num1 after execution of the following code: [3] int num, num1=0; for (num=100 ; num <=102 ; num ++) num1 = num +2; --num1; Q18. How many times Welcome will be printed when the following code gets executed? [3] int x =0; while ( x++ < 10) System.out.println( Welcome );

6 Q19. What will be the output of the following code fragment : [3] int n =456 ; int x =0 ; while(n > 0) x += (n%10) ; n /= 10; System.out.println( +x); Q20. Find the output of the following code fragment? [3] (a) int s = 14; if( s < 20 ) System.out.print( Under ); else System.out.print( over ); System.out.println( the limit ); (b) int s = 94; if(s < 20) System.out.print( Under ); else System.out.print( Over ); System.out.println( the limit ); Q21. Rewrite the following code using a while loop. [3] int i = 0, x = 0; for(i=1 ; i < 10 ; I *= 2) x++; jtextarea1.append(string.valueof(x) + ); Q22. What will be displayed in jtextfield1 and jtextfield2 after the following code is executed: [2] int number = 12 ; if(number < 15) jtextfield1.settext( +number); number++; jtextfield2.settext( +number); else jtextfield1.settext( number1 ); number++; jtextfield2.settext( number2 );

7 Q23. Rewrite the following code using if else if statement instead of switch : [3] switch(success) case -1 : x1 = No result ; break ; case 0 : x1= Final result Not successful ; break ; default : x1 = result NOT known ; break ; Q24. The following program has some errors. Rewrite the correct code underlining each correction: [2] int p, sum==0; sum=+3; p=sum; while (p=<12) ******************

8 M.M: 50 MONTHLY TEST (OCTOBER 2018) CLASS XII INFORMATICS PRACTICES TIME: 90 Mins. General Instructions:- 1. All questions are Compulsory. Each question carries marks indicated against it. 2. Please write down the serial number of the question before attempting it. Q1. Zia is working with list box. She has placed a list of control on her form to display the list of all items available in her shop.she wants to allow user to select multiple items from her list control. Which property of jlist should she use to do the same? Q2. What is the difference between the use of isselected and setselected methods used with JCheckbox in Java? Q3. Write Java statement to make jtextfield1 uneditable. Q4. While making a form in NetBeans, Mr. Harihar Jha wants to display a list of countries to allow the users to select their own country. Suggest him to choose most appropriate control out of ListBox and ComboBox. Q5. What is the difference between the use of jcheckbox and jradiobutton in a form? Q6. What is the purpose of default statement in a switch? Q7. Name any one invisible swing control. Q8. What will be displayed in jtextarea1 after execution of the following code? jtextarea1. settext ( One should keep \t his \n promise ); Q9. Identify the invalid variable names. State the reason if invalid. (i) Market Unit (ii) Product_1 (iii) Sales123 (iv) 2Marks Q10.Write the data type of variables that should be used to store: (i) Marks of Students (ii) Grades of Students (Grade can be A or B or C ) Q11. Identify the error in the following code : switch(c) case 9.0 : a = a + 2 ; break ; case 8.0 : a = a + 3 ; break ; Q12. Mr. PK has developed a Java application for a school, in which, a combo box is made on the form for selecting class. Name the property which Mr. PK should use to add the class data in combo box. Q13. Write Java statement to make a jtextfield1 disabled. Q14. Distinguish between Combobox and ListBox. When would you prefer using them over Radiobutton and Checkbox? [2] Q15. Write the value that will be stored in variable a after execution of the following code if : [2] (i) initial value of a is 8. (ii) initial value of a is 10. int b = 9 ; if (a > b) a = a + 5 ; a = a + 2;

9 Q16. Rewrite the following code using switch statement: [3] if(code == A ) allowance = 3500 ; else if (code== B ) allowance = 3200 ; else allowance = 2000 ; break; Q17. What values will be displayed in JOptionPane when the following code is executed? [3] int a= 5, b=2 ; while(a < 20) a = a + b ; b = a b ; JOptionPane.showmessageDialog(null, a) ; Q18. Write the code given below using for loop instead of while loop : [3] int i = 1; while (i <= 5) if( i * i == 4) jtextfield1.settext( +i); i = i + 1; Q19. The following code has error(s). Rewrite the correct code underlining all the corrections made: [3] String str1= javaprogram; int b; for(int b=0 ; b<3, b++) jtextarea1.showtext(str1+ \n ); str1=str1+b; Q20. What will be the values of i and z after the following code is executed : [3] int i = 0 ; int z = 10 ; do i = i + 2 ; z -- ; while (i < 10) ; Q21. What will be the contents of jtextfield1 and jtextfield2 after executing the following code: [3] String s = Best ; String r = Luck ; String z ; int x ; z = r.concat(s) ; x = s.indexof( s ); jtextfield1.settext(z); jtextfield2.settext( +x);

10 Q22. The following code has some error(s). Rewrite the code underlining all the corrections made: [3] int a ; int b = 15 ; do ; a = a + 3 ; b = b 3 ; while a <= b ; Q23.

11 Q24.

ASSIGNMENT FOR AUTUMN BREAK CLASS XI INFORMATICS PRACTICES ( )

HARDWARE CONCEPTS ASSIGNMENT FOR AUTUMN BREAK CLASS XI INFORMATICS PRACTICES (2017-18) Q1. Write at least two points of difference between the following terms: (i) Analog Computer and Digital Computer