D e l h i P u b l i c S c h o o l , R a n c h i

S A I L T o w n s h i p R a n c h i 8 3 4 0 0 4

+ 9 1 - 9 4 7 0 9 3 2 5 4 4 ( C e l l )

+ 9 1 - 9 0 9 7 5 3 6 2 0 4 ( O f f )

1 / 3 / 2 0 1 4

Developed & Designed by DR. SRIKUMAR MUKHERJEE (Teacher, Dept. of Computers, DPS, Ranchi)

“Systematic organization of habits and

instincts with purpose of fulfilling the

becoming of life, by graduated active manipulation of behavior may be called –

Education.” [NP Vol-3]

Practice Paper of Informatics Practices (065) for XII Board Exam 2014

Instructions for using this practice paper and preparation for writings of the answers:

This is designed according to the text book taught in the class.

First read / browse a chapter then go through the questions to find the answer of this paper.

Page wise, chapter wise, important questions have been prepared.

After ending each chapter also find the questions given at the end of the chapter.

Finally also take help form the sample paper of the market.

What to do in the examination hall?

Just after getting the question paper, take couple of deep breaths concentrating your mind.

Read the question paper properly, and make a plan to answer.

As far as possible attempt the questions in the serial order.

Theory answers must not be unnecessarily too long, it must be precise and to the point.

Theory based programming answers of Qs 1, 2 & 3 should have example(s).

Example is must, even it is not asked.

Outputs must be written just as it is viewed in console-display. Be careful of error findings & outputs.

Error finding must be Re-written in the form of full corrected program with underlined the corrected

places of the corrected re-written program and commenting on the „errors‟.

Draw „Line of Separation‟ end of each answer by dark PENCIL and keep 1-2 lines gap, before you

start to answer the next question in the examination hall.

Don't waste the time for the question about which you are in doubt.

Complete your all answers within 2hrs 15min and use rest 35-40 min to revise your papers.

Before leaving Exam Hall do RE-CHECK all the answer papers properly within 5 min.

.

W1

W2

W3

W4

[Question# 1] NETWORKING & OPEN SOURCE SOFTWARE [TOTAL MARKS 10]

(1) Define / Make a short note of the followings (Computer Networking): [1-2 / 2-3 marks of each]

(a) Computer Network (b) PAN, LAN , MAN, WAN, (c) Node , Server , Hub , Workstation, TAP , NIU (d) Ring Topology , Star Topology , Tree Topology , Bus Topology, Mesh Topology (e) Data Communication (f) Twist Pair Cable , Coaxial cable, Optical fiber cable, Ethernet cable (g) Wireless Networking (h) Microwave, Radio wave, Satellite, (i) Infrared Communication (j)

Bluetooth , WiFi (k) Modem , Hub , Ethernet card, Repeater , Bridge , Gateway , Router (l) IP address , MAC address , Domain name (m) Define: 023.876.067.002 , www.indoaryan.org , URL (n) Differentiate: Domain Name & URL (o) .org , .com , .edu , .net , .gov (p) Network security , Threat to Network (q) Firewall , IDS , Snooping , Danial of Service Attack or DoS Attack (r) SYN Fooding , Pentium “F00F” Bug , Ping Flooding , TearDrop / New Tear (s) HTTP , HTML , FTP , TCP/IP ,

SMTP

(2) Excel Industries has set up its new center at Lucknow for its office and web based activities. The company

compound has four building as shown in the diagram below :

Sri Ram

Build ing

KGNBuilding

KrishnaBuilding

Sai

Bu ild ing

The distance between various buildings are :

KGN to Sri Ram 65m

Sri Ram to Sai 195m

Sai to Krishna 205m

Krishna to KGN 200m

KGN to Sai 195m

Sri Ram to Krishnal 325m

Number of computers are :

KGN Building 158

Krishna Building 125

Sai Building 200

Sri Ram Building 78

A company in Micro Excel has 4 wings of buildings as shown in the diagram:

Center to center distances between various Buildings:

W3 to W1 50m W1 to W2 60m

W2 to W4 25m W4 to W3 170m W3 to W2 125m W1 to w4 90m Number of computers in each of the wing:

W1 150 W2 15

W3 15 W4 25

Computers in each wing are networked but wings are not networked. The company has now decided to connect the wings also.

i) Suggest a most suitable cable layout of the connection between the wings. ii) Suggest the most suitable wing to house the server of this company with a suitable reason. iii) Suggest the placement of the following devices with justification: 1) Router 2) Switch / Hub iv) The company is planning to link its head office situated in India with the offices at Reliance. Suggest an economic way to

connect it; the company is ready to compromise on the speed of connectivity. Justify your answer. (3) Short answer type question: [2 or 3 marks for each]

1) Which protocol is used to move Hyper Text document and simple file transferring through networks in wide area scale? 2) Which protocol will you use to transfer a file from the remote location?

3) Which transmission medium should be used to transfer data across two continents at very high speed? 4) How can you increase to signals between two networks if it is going down? 5) How the Indian languages are getting included in the application of computers easily? Name four such languages. 6) How do the web address is practically used in the net? Write the format of the same.

7) Is there any difference between an IP address (i.e. 239.004.994.010) and web address (i.e. www.indoaryan.org)? 8) Arrange the followings in ascending order according to their data transmission rate. 9) Sujata had some confusion between Domain name and URL. How do make her understand about the differences? 10) Which of the following is not a characteristic of Open Source Software: (i) There is a company owner (ii) Can be

downloaded freely (iii) Source code is available for modification. 11) There is a group presentation of two professors with their Palm Tops connected through Bluetooth. Which of the

following networks they are using: WAN LAN PAN MAN 12) How do you differentiate the OSS and Proprietary software in terms of customizability of the software? 13) Arrange the following communication channels in ascending order of their data transmission rates. ETHERNET

CABLE, OPTICAL FIBER, TELEPHONE CABLE, COAXIAL CABLE.

(g1) Suggest the cable layout of connections between the buildings. (g2) Suggest the most suitable place to house the server, with a suitable reason.

(g3) Suggest the placement of the following devices with reasons : i) Repeater ii) Hub Switch (g4) The Institute is planning to link its International office situated in New Delhi. Suggest the best wired communication link with a very

high speed connectivity from the following : i) Telephone Analog Line ii) Ethernet Cable iii) Optical Fiber

14) Which of the following software‟s are open source: LINUX, MS WINDOWS 7, PHOTOSHOP, MYSQL

(4) Define / Make a short note of the followings (OSS): [1-2 / 2-3 marks of each]

(a) Free software, (b) Open source software, (c) Freeware, (d) Shareware, (e) Source code, (f) FLOSS, (b) FSF, (h) W3C, (i) OSI, (j) GNU, (k) Tomcat, (l) MySQL, (m) Front-End & Back-End, (n) Pango, (o) PHP, (p) Open Office, (q) Python, (r)

Firmware, (s) UNICODE (t) ASCII code (u) Name 2 sites of OSS.

[ Question# 2 ] Java (with IDE) + HTML & XML [TOTAL MARKS 10] (1)

a) Explain How and when do you use getText() & setText() methods? b) Differentiate of its‟ applications: isEditable() & isEnabled() c) Write the use of valueOf() method and output of the statement: float x=999.101 ; jLabel1.setText(String.valueOf(x)); d) Write the function of toString() method.

e) What is a wrapper class? Explain the following in terms of wrapper class: String x=”12345”; int y=Integer.parseInt(x) ; f) Why do you use import javax.swing.JOptionPane ? Describe the two applications of JOptionPane class of the package

javax.swing g) Which swing components does javax.swing.JPanel container contain?

h) Write the application of the method getPassword() with a right example.

i) How do you insert single lined and multiple lines comments? j) What are the members of Java Tokens? k) Differentiate: (a) Identifiers & Keywords , (b) Primitive & Reference Datatype , (c) Local & Instance(object) variable , (d)

Logical & Relational operators, (e) \t & \n , (f) \b & \r , (g) / & % operators l) Differentiate: (i) int x=10 & final int y=10; (ii) (int k=10) & (int k==10) m) What is use of default in switch…..case statement? When do you use break in switch…..case?

n) What are pre and post increments? Can you explain pre & post decrement also with example? o) What will happen if you run a break statement in for loop? When do you use for loop? p) How do you differentiate the applications of: while and do……while statements? q) What are exit-control and entry-control looping statements? Explain with example.

r) In a Java application using Net Beans IDE, the user views the data on the Text Fields, he found that – his name is

misspelled, now he wants to edit it, but can‟t. What was done by the programmer that does not allow the user to edit his name?

s) How do you enable the jLabel1? t) How do you insert values into the TextArea? Write the syntax in terms of inputing value of i: for(i=1;i<=10;i++)?

u) Rashmi in her desktop application wanted to show her friend‟s names in the List Box and their city names in the Combo Box. Which property of the List Box and Combo Box will she use to do her jobs?

v) When do you import javax.swing.DefaultListModel; & import javax.swing.DefaultComboBoxModel; ?

w) What is Panel Container? In which package does it stay?

x) When do you use Check Box and Radio Button? Establish the relation between the use/application of Radio Button and Combo Box.

y) Differentiate: (i) String x = (String) jList1.getSelectedValue() & String x = (String) jComboBox1.getSelectedItem() (ii) isSelected() & setSelected() (iii) Text1.setForeground() & Text1.setFont() (iv) getText() & setText() (v)

getSelectedIndex() & getSelectedValue() (vi) addElement() & insertElementAt() (vii) removeAllElements() & removeElementAt() (viii) remove() & clear() (xi) getModel() & setModel() (x) isEnabled() & setEnabled() (xi)

JOptionPane.MessageDialog( ) and JOptionPane.InputDialog( ) z) What is swing control? (Z.1) Write the output of x in the following case:> int x = (5>=8) ? 1 : 2;

aa)What is ButtonGroup? How does it effect to select a Radio Button? bb)How does the Model contain the data to be taken from a list of data? cc) What is the concept of OOP in terms of Class and Object? Write the syntax of the object creation. dd)Object of which class do you create when you are working with inheritance? Write the advantages of inheritance.

ee)How many times the following loops will run? Which one of these is entry control and which one is exit control? Show the outputs: (A) int s=0 ; i=4 ; do { s+=i ; i++ ; } while (i<5) ; System.out.print(“ ” +s);

(B) int s=0 ; i=4 ; while(i<5) { s+=I ; i++ ; } System.out.print(“ ” +s); ff) What are the final values of:

(A) int x ; int y=1 ; for(x=0 ; x<10 ; ++x) y = x++ ; - -y ; System.out.println(“Value of x & y=> ”+ x + “ ” + y; (B) int a=2; int b=3; do{++b + b++; a++; a=++a ;} while(b<=12) ;System.out.println(“Value of a & b=> ”+ a + “ ” + b;

gg) What are ODBC and JDBC ? hh) Write down the steps to create Menu & Sub-Menu. (FILE -> Open -> main.exe)

ii) What is purpose of user defined method? How do you pass parameters/arguments to a method? jj) Explain methods call by value and call by reference .

kk) When a called method is called as void type and other data types? What do you understand value returned? ll) Explain scope of variables in terms of Local and Global variables.

mm) Write a function that will take length and breadth of a rectangle as parameters and return the area of the rectangle. nn) Write the use & Output of the following STRING Library Functions: (1) contact( ) (2) Length( ) (3) substring( ) (4) toLowerCase() (5) toUpperCase() (6) Trim() (7) String x=”Indoaryan” ; String y=”Existentialism” ; x=x.contact(y) ; System.out.print(“ ”+x) ;

oo) Write the use & Output of the following Library Functions from MATH class:

(1) Math.sqrt() (2) Math.abs() (3) Math.cell() (4) Math.pow() (5) Math.round() (6) Math.max() (7) Math.min() (8) Math.floor(12.7) (9) Math.pow(2,3) (10) Math.sin(30) (11) Math.round(78.678)

pp)What is the use of new operator during creation of an object (instantination) of a class?

qq)What is a class? Explain the function of a constructor in a class? rr) How does an inherited class use the parent class? ss) How many kinds of Parent and Child class relationships can you mention? tt) How do private , public , protected & default accessibility of variables and methods of a class can work? uu)What is the use of an object? How do you call a method add() which is declared and defined in the child class?

vv) Differentiate: Method-Overloading and Method-Overriding with examples.

ww) Radha created a method add() in a super class named myclass and she also made another method of the same name [ add() ] declared in the child class yourclass of myclass. But while she runs the program, method of the parent

class does not run, but method of child class does run? What is the reason behind it? Can she run the method of the

super class? If yes then how? xx) Satya created three methods of the same name Calc_Val() in a class and called the three methods one by one with

three different sets of parameters/arguments such as (int a) ; (int x, String k) & (double i, long j, char p). Will Satya get

success to run these three methods consecutively? If so explain how? yy) What is an Abstract Class? How do you use it, explain with an example? zz) Explain the interface of class with an example.

aaa) Rathin has created a class, has no instantiation of objects (no objects created) and there is a method created inside has no implementation and terminated with a semicolon ( ;) just after it defined. Now how Rathin does fill the gap of not

implementation of the method, by implementing the method in a sub-class (inherited) of the same? bbb) What is Front-End Back-End connectivity? Write the application of JDBC and ODBC in 3Gl-4GL connectivity? ccc) Write about JDBC-ODBC Bridge. What is JDBC Api? ddd) How does JDBC driver work for MySQL?

eee) Write the statement (syntax) that makes driver loaded to establish connection between Java and MySQL? fff) Write the statement (syntax) that makes the connection between Java and MySQL? ggg) How can you run a SQL Command in a Java program, that is written for database connectivity? hhh) Give the functions of: getConnection() , getDriver() , getLoginTimeout() , executeQuery() , executeUpdate() , first()

, previous() , getLong() , getRowCount() , setRowCount() , removeRow() .

(2) Write the answer of the following based on HTML & XML:

a) Write down the differences of HTML and XML. b) Write mail 2 advantages of XML over HTML. c) Expand the term HTML and it‟s function.

d) Which tag in HTML will Subroto use place his photograph in the back ground of his web page? How will he use it? e) What are the different four levels of HTML tags? f) What is the file extention of a HTML code to be saved in a word processor? What type of file does it create? g) What are the fundamental / document tags of HTML?

h) What are container tag and empty tag? Explain with examples. i) Wrte the function of HEAD and TITLE tags. j) Write the different elements / attributes of BODY tag. k) Explain the function of the followings: BGCOLOR , BACKGROUND , TEXT , LINK , VLINK , ALINK

l) Write the differences of LEFTMARGINE and TOPMARGINE m) Write the elements / attributes of FONT tag. n) Write the functions of: FACE , COLOR , SIZE o) What is BASEFONT?

p) Differentiate between <BASEFONT> and <FONT> tag? q) How do you use the following tags? Give suitable examples to explain: (i) commsent (ii) paragraph (iii) center r) Explain the uses of the following HTML text tags with example:

s) (a) <BR> (b) <P> (c) <B> (d) <I> (e) <U> (f) <STRIKE> (g) <SUP> (h) <SUB> (i) <TT>

(j) <BIG> (k) <SMALL> (l) <BIG> (m) <STRONG> (n) <FORM> (o) <METHOD> (p) <MAILTO> (q) <RESET> (r) <SUBMIT> , <INPUT TYPE=”submit” VALUE=”Submit Order”> , <INPUT TYPE=”Text”> ,

t) How do you display H2SO4 & (A+B)2 in a HTML page?

u) What are the different levels of Heading tags? Give example.

v) Which of the tags : <H6> or <H1> gives a bigger size heading? w) What is <HR> tag? Write the different elements/attributes of HR tag. x) What are uses of the followig in terms of HR tag: ALIGN , NOSHADE , WIDTH (in Number) , WIDTH (in %age). y) Answer the following in terms of LIST tags:

(a) <UL> (b) <OL> (c) <LI> (d) <DT> (e) <DL> (f) <DD> (g) <DIR> (h) <MENU> z) What is the use of TYPE (“A” , “a” , “I” , “i” , “1” ) element in <OL> tag? aa) What is the use of START element in <OL> tag? bb) What are the different types of bulletes can be used in <OL> tag?

cc) What is use of VALUE element in <LI> tag? dd) Explain with example nesting tag OR tags within tag? ee) What is the HTML code for the following outputs (the Hyperlinks are indus.html & agre.html):

INDIA

1. Economy

Industry

Agriculture

2. Education

INDIA

3. Economy

Industry

Agriculture

4. Education

INDIA

1. Economy

Industry

Agriculture

INDIA

1. Economy

2. Education

3. Health

I. How do you insert an image in a web page? Write the HTML tag to display school.jpg.

II. IMG SRC is an empty or container tag? III. What are the elements/attributes of <IMG SRC> tag?

IV. Write the most useful TWO attributes in <IMG SRC> tag? V. What are the functions of: ALIGN , ALT , WIDTH , HEIGHT , BORDER elements in image tag? VI. Explain the NAME attribute of anchor tag.

(3) Write the suitable HTML code to get the following outputs

”

(4) Special Notes of the following Web Page:

a. Title of the page is : “People‟s Science Club”

b. The background color of the page will be: “SILVER”. c. Font face of the whole page will be: “TOHAMA”. d. Logo used in the page on the top corner should be from a file “Sclogo.gif” e. Text colour of the main heading should be: “BLUE”.

f. Pages Linked with: Environment Awareness “Environment.HTML” Health & Hygiene “Health_hygiene.HTML” Literacy Movement “Literacy.HTML”

Model Exhibitions “Modeling.HTML” Poster Exhibition “Postering.HTML” Symposium “Symposium.HTML”

g. The message “Adapt Scientific Way Of Life To Be and Become!!!” should be displayed in “MAROON” colour.

h. Link colour should be “YELLOW”, visited link will be “GREEN” and active link will be “BLACK” in colour. i. The bottom message should be with size as “2”.

a. Title of the page should be “Global Warming”

b. Background colour should be “Yellow” c. Text font should be “Dauphin”

d. Image of the pollution is “warming.gif” e. Pages are linked with :

The main page is “home.htm”

Water pollution page is “water.htm”

Soil pollution page is “soil.htm”

Biospare pullution is “biospare.htm”

Result page is “result.html”

Contact page is “contact.html” f. Visited link colour be “Blue” and Active link colour be “Red” h. Bottom message should be centre

aligned and the font size as “2”

(5)

a. Title of the page should be “Bharat

Darshan”

b. Background colour should be “Yellow”

c. Text font should be “Dauphin”

d. Image of the Indian map from the file

“MapOfIndia.gif”

e. Pages are linked with :

f. (a) Kerala Dekho as “Keral.htm”

(b) Himachal Dekho as “Him.htm”

(c) GOA Dekho as “Goa.htm”

(d) Rajasthan Dekho as “Raj.htm”

g. Visited link colour be “Blue” and

h. Active link colour be “Red”

i. Bottom message should be centre aligned and the font size as “2”

[Question# 3] RDBMS with MySQL [TOTAL MARKS 10]

(1) RDBMS: a) Define: (a) Relation, (b) Attribute or column, (c) Touple or row, (d) Field or Attribute

(e) Degree, (f) Cardinality, (g) Entity. [1 - 2 marks for each]

b) Difine: DDL , DCL , DML , TCL , Query command. [1X5] c) Define the following KEYs: FOREIGN KEY , PRIMARY KEY , CANDIDATE KEY , ALTERNATIVE KEY [1x4]

d) Describe different 3 types (1-1 , 1-many , many-many) of data relationships. [3] e) With diagram describe the different components of Database. [3] f) What are problems of Data Redundancy and Data Inconsistency? [2] g) What is Cartesian Product? Give example. [1]

h) Define Data Models: Relational , Network , Hierarchical , Object Oriented [3X2] i) What will be value of the cardinality if you add 3 rows to a table of existing 5 records? [1] j) Draw and explain the relationship of: (a) One-to-one, (b) One-to-many, (b) Many-to-many. [2] k) What is client-server system? Explain 2-tyre and 3-tyre system. [2] l) In a query what is the use of “_ _a%” ? [1]

m) How do you create a Foreign Key (REGNO) in table (CLASS) to make relationship with a Master/Parent table (STUDENT)? Also write the basic factors to select a field as the Key field (Primary/Foreign). [2]

n) Write the use of these constraints: NOT NULL , UNIQUE , CHEQUE , PRIMARY KEY , DEFAULT [2]

o) What is joining of tables, write its‟ types? What is Alias using queries on multiple tables? Give example. [3] p) Write the uses of GROUP BY and ORDER BY clauses. [2] q) How can you restrict user to enter duplicate values in a field? r) Differentiate: (i) ALTER & UPDATE tables [2]

s) Differentiate: (i) Equi Join & Non-Equi Join [2X2] t) Define: COMMIT ROLLBACK SAVEPOINT [3] u) What is group function? Give two examples. v) How do you make any change permanent in Database?

w) Differentiate the uses of: DROP & DELETE. 2. Write the USE and OUTPUT of the following library functions (STRING , ARTHIMETICAL , DATE):

A. (i) CONCAT() (ii) INSTR() (iii) SUBSTR() (iv) LEFT() (v) RIGHT() (vi) TRIM() (vii) LTRIM() / RTRIM() B. (i) ROUND() (ii) POWER() / POW() (iii) TRUNCATE()

C. (i) DATE() (ii) CURDATE() (iii) NOW() (iv) YEAR() (v) DAYOFMONTH() (vi) MONTHNAME() (vii) MONTH()

(viii) DAYNAME() (ix) SYSDATE()

[Question# 4] Java (with IDE) [TOTAL MARKS 15]

(1) NDPS offers two crash courses, one

in computers and the other in Commerce. The students can avail

certain optional facilities. The Basic Interface for accepting details of facilities availed by a student are as given under: Write the code and event methods for

incorporating the following functionality: Assume that the charges for library, mess and Transport are Rs. 500, Rs.1200 and Rs. 1000 respectively.

Write a method that calculates (in ButtonCalc) the charges per session (3 months), for the facilities availed including registration fees Rs.500. Let

course fees for MCA and MBA per

BBhhaarraatt DDaarrsshhaann

Kerala Dekho

Himachal Dekho

GOA Dekho

Rajasthan Dekho

Create your email ID on: www.theindianschoolonline.com

session are: 15000 and 20000 respectively. [4]

(2) Read the following case study and answer the questions that follow:

ABC company has developed the following interface to enter the display data related to Income tax of employees. When the form loads text boxes for income tax, Education tax , surcharge and total tax amount should be disabled. They should be

enabled only when calculate command button is clicked. [2]

When the user clicks the clear command button textboxes empcode and empname should be

set of blank and textboxes be set to zero. [2]

When calculate command button is clicked income tax, educational tax, surcharge and total tax (sum of income tax, education tax ,

surcharge) is displayed in their respective text fields based on the following criterion :- [4]

(3) Here is a Student‟s Entry Form. Here a student

shall enter his/her name and select sex, game and branch and submit the selected

data. Now answer the following questions

using the control names: (a) Write

the code for the EXIT button to

stop running the application. [1]

(b) Write the code for SUBMIT button to take the values from different options and store 3 points to a variable pt if selected

sex is Female and branch is Humanities. [4]

(4) Write the Java program as instructed below:

A Financer often needs to calculate the interest and

amount of his clients. He assigned his software

programmer to design a „calculator‟ which will

calculate the compound interest and amount due if a

person takes loan for 5,10 or 15 years. The

programmer opts for Net Beans IDE with Java to

develop the following form as the layout given:

Taxable income Income tax Education tax Surcharge

Upto Rs. 100000 Nil Nil Nil

Rs. 100001 to 150000 10% of amount exceeding Rs. 100000 2% of taxable income Nil

Rs. 150001 to 250000 Rs. 5000 + 20% of amount exceeding Rs. 150000 2% of taxable income Nil

Rs 250001 and above Rs. 25000 + 20% of amount exceeding Rs. 250000 2% of taxable income 1% of taxable income

Controls Name

jTextField TextName

jCheckBox ChkBskt ChkFoot ChkSwim ChkHoky

jRadioButton RadioBoy

RadioGirl

jComboBox CmbBranch

jButton ButtonSubmit

ButtonExit

(a) Write the code to disable the textInterest in the Form Load event of

frmInterestCalc. [1]

(b) Write the code for cmdClear Command Button to clear all the text boxes.

And set default choice in the Option Button as 5 Years. Also put the cursor

to the txtPrincipal. [2]

(c) Write the code for the text boxes for the Principal and Rate entry to ensure

that the user enters only numeric values in them. [2]

(d) Write the code for the click event of the command button to calculate the

compound interest and amount depending on the principal, rate and time. [2]

[Compound Interest=> P * (1+r/100)^T Amount=> Principal + Compound Interest]

(5)

Ms. Sheela works in a shopping mall. To calculate net payable amount she has developed the following GUI in NetBeans. The shop accepts payments in three modes- Cash, Debit Card, Credit Cards. The discount given as per mode of payment is as follows- If the Member check box is checked then the customer gets an additional discount of 5% on net payable amount.

I. Write the code to make the textfields for Discount( txtDiscount ) and Net Payable (txtNetPayable) un-editable. II. Write code to do the following-

a) When Calculate button is clicked the discount and net payable amount is calculated as per the given criteria and displayed in discount and net payable text boxes.

b) When Clear button is clicked all the text boxes should be clear.

c) Close the application when Exit button is pressed.

(6) RE-WRITE THE PROGRAMS WITH CONVERSIONS:

a. Rewrite the following code segment using switch case

instead of if else: [3] int sal ; if (sal <=10000) System.out.print(“New year bonus is 2000”);

else if( (sal>=12000) && (sal <=15000)) System.out.print(“New year bonus is 5000”); else if (sal=>20000) System.out.print(“New year bonus is 7000”);

else System.out.print(“Bonus not applicable”);

b. Convert the following without using a for loop: [3]

for( int j = 3; j>=1; j--) { if (x==1) System.out.print (“One”);

else if (x==2) System.out.print (“Two”);

else if (x==3) System.out.print (“Three”);

}

c. Convert the following into a FOR loop: [3]

int i=99; do { System.out.println(“”+ i+10) ; i=i-3; }

while (i<=33);

d. Rewrite the following code segment using for loop

int total ; int n ; int I ;

n= Integer.parseInt(TextNo.getText()); while( i< = n) { total =total + I; i=i+1;

}

e. Rewrite following while loop into a for loop

int s=0;

while(s<=13) { if (s%2==2) { System.out.println(“color code red”); }

else { System.out.println(“color code blue”); } System.out.println(“New color code ”); s=s+1;

}

f. Rewrite following while loop into a for loop

int stripes =0;

while(stripes<=13) { if(stripes%2==2) { System.out.println(“colour code red”); }

else { System.out.println(“colour code blue”); } System.out.println(“new stripe”); stripes =stripes +1;

}

Object Property Radio Button

Opt5years Opt10Years Opt15Years

Text Field

TxtPrincipal TxtRate TxtInterest TxtAmount

Command Button

cmdCalculate cmdClear cmdExit

Mode of payment Discount

Cash 12%

Debit Card Nil Credit Card 8%

g. Rewrite following for loop into a while loop

int sum=0;

for(int i =1;i<=5;++i) { sum=sum+c; }

h. Rewrite the following code using for loop.

int i=0;

while(++i<20) { if( i==8) break; System.out.println(i++);

}

(7) Write the OUTPUT of the following code segments: [2 marks of the each qs.]

(a)

Int compute(int x, int y) { //Assuming x>=0 and y>=0 If(x>=y) { x=x-y;

return compute(x,y) ; } else { return x;} }

(b) int x,y;

for(x=1;x<=4;x++) {

for(y=1; y<=4;y++) {

System.out.print(" "+x); } System.out.println();

}

(c) double Number = 7583241; int Firsr = 0, Second = 0, R; do { R = Number % 10;

if ( R % 2 == 0 ) First += R; else Second += R; Number = Number / 10; } while (Number > 0);

System.out.print(First – Second );

----------------------------------------------------------------------

(d) int i, j, k;

for(i=1; i<=4; ++i)

{

for(k=1, j=I ; k<=I ; k++ , j+=2)

System.out.printl(“ “,+j);

System.out.println(“ “);

}

(e)

String st="Comp9UtEr Scie7 nce"; char ch; int i;

for(i=0;i<st.length();i++) { ch=st.charAt(i); if(Character.isUpperCase(ch)) System.out.print(Character.toLowerCase(ch));

else if(Character.isWhitespace(ch)) System.out.print("#"); else if(Character.isDigit(ch)) System.out.print(" ");

else System.out.print(Character.toUpperCase(ch)); }

(8) Find the ERRORS, Re-Write and Give the expected Output of the following questions:

(a)

Class one{ Private int count; }

Class two{ Public static void main (String args[]) { one ob = new one(); ob.count=10;}

(b) switch(x)

{ case 1 : n1 =10 ; n2 =20 ;

case 2 : n3 =30 ; break; n1 =40 ;

}

(c)

int m=100;

while(m>0) { if (m<10) break;

m=m-10; } System.out.println(“m is “+m);

(d)

int f =1,i=2; while (++i <5) f *=i;

System.out.println(f);

(e) Find the errors, if any…

int m=1;

int n=0; for( ; m+n <19; ++n);

System.out.println(“Hello \n”); m=m+10;

(f) double i, sum=2 ;

for(i=3;i<8;++i)

{ if(i%4= =0) { break; sum=Math.pow(sum,i); }

else sum+=i/2; }

(g) int x=0; for(i=1; i<10; i++) { for(int j=5; j>i ; j--) { System.put.print(“The j is “ + j)

System.out.display(“The i is “ + i); } X=i+j; System.out.print(“The x is “ + x) }

(h) int i=0;x=0; while ( i < 10 ) { if (i % 2 = 0) { x == x + i ;

System.out.print(x + 1); } i ++; }

(9) WRITE PROGRAM IN Java using Net Beans IDE: [Marks 3 / 4 each]

a) Write a method that calculates the sum of all even numbers less that N b) Write a method that takes an integer argument N and calculates the sum of all even numbers less that N c) Write a method that takes 2 integer arguments N & A and returns the sum of powers of A up to Nth term. [S=A

1+A

2+…+ A

Nth term]

d) Write a method in a class (myclass) that takes integer values of N and A and return the sum of the powers of A up to Nth

term. [S=A1+A

2+…+ A

Nth. term]

e) Write a method in a sub-class (yourclass) of the super class myclass that takes an integer value of N from the user and

calculates the sum of the odd numbers up to Nth term. f) Write a method in a child-class (yourclass) of parent class myclass that takes integer arguments/parameter of N from the

caller method sum() through the object myobj , and return the sum of the odd numbers up to N and display the result. g) Write a method (sum()) in a class myclass and pass object (myobj) of the class as argument/parameter from the caller

method , and return the sum of the odd numbers up to Nth term and display it after the caller method called. h) Write a method pere()in a class which will take 2 parameters Length & Breadth as reference through object and find area.

i) Write a program to store your name into an Array and display character wise reading from the Array. j) Write a program to store natural numbers into a double dimension Array and print the sum of the numbers row wise. k) Write a method will take New value and position as parameter, which are of integer type, insert the new value in the

specified position in an array.

(l) Write a function Power to raise a number m to power n. The function takes two integer value and returns the result correctly, Use default value of 2 for n (to calculate squares) if argument is omitted. [3]

(m) A class Electbill contains consumer details and another class Bill calculates the monthly electricity bill of a consumer.

Details of the two classes are given below:

Class name : Electbill Data members/Instance variable : cno : consumer number name : consumer name

add : consumer address Member functions :

Electbill(....) : Parameterised constructor to assign values to consumer number, consumer name and address void display() : Display consumers details Class name : Bill Data members/Instance variable :

n : integer variable to store number of the units consumed Member functions :

Billl(....) : Parameterised constructor to assign values to data members void calculate() :Calculate the monthly bill of consumer according to following slabs and it should also display the consumers details and total amount to be paid.

Number of units consumed Rate

1 - 100 Rs 500/-rental charges only

101 - 200 Rs 1.00 per call + rental charges

201 - 300 Rs 1.20 per call + rental charges

Above 300 Rs 1.50 per call + rental charges (n) Specify the class Electbill giving details of constructor and member function void display().Using the concept of

Inheritance specify the class Bill giving details of constructor and member function void calculate() (o) Write the programs of the following outputs:

(i) #

# #

# # #

(ii) * * * * * *

(iii) @ @ @ @

@ @ @ @ @

(iv) 1 2 2 2

3 3 3 3 3 2 2 2 1

[Question# 5 & 6] RDBMS with MySQL [20]

(1) Write the SQL commands of the following Table(s) [0.5 mark of each qs.]

Table: STUDENT

Table : CLASS

(10.1)

a) Create the table Student, using constraints NOT NULL, UNIQUE, PRIMARY KEY, FOREIGN KEY, CHEQUE, DEFAULT value “RANCHI” for Address in appropriate attributes/fields/columns.

b) Enter a new record: S009, Swapan Pal, 11, E, 80.5, 15-8-1991. c) Re-arrange the records in descending and ascending order on Date of Birth. d) Display the Name Class Age and Date Of Birth of the students who have either less then 80 Average Marks, or year of

birth before 1993. e) Display the Name, Admission number and Date of Birth of those whose first character of name is K. f) Display the Name, Admission number and Date of Birth of those where 7

th latter of the address is A.

g) Display the Different Sections present in the table. h) Display the Different Sections and their corresponding numbers present in the table.

i) Replace the Name Ajay Malhotra by “Ajit Mahapatra”. j) Increase each of the Average Mark by 2.0. k) Display number of records present in the table. l) Display Numbers of each section in the table of those who got Average Marks more than 75.

m) Include a new column Address in the table. n) Delete the same column. o) Make the column Admission number as a Primary Key. p) Remove the existing record(s) of all who are not from classes 11 or 12.

q) Display the Maximum Average Marks from each section. r) Display the Minimum Average Marks from each section. s) Display the Total Average Marks of the table. t) Display the values of Name and Date of Birth close together (concatinate).

u) Show the Name and number of characters of each name. v) Show the first character of each name as Capital. w) Show the each of the names in capitals and small as well separately. x) Locate position of the character „A‟ in each of the name.

y) Display rest of the blank characters of a described field by „ * ‟. z) Remove all of the blank spaces from name field. aa) Display first 5 characters of each of the name.

bb) Convert the date value into character value and number value of year of birth after 1990. cc) Find the Square root and Reminder of division by 3 of Average marks. dd) Display the Power 3 of the Average Marks of the sections A.

ee) Make StdCode of the Student table as FOREIGN KEY in reference to the Parent table Teacher.

ff) Display Student‟s Code , Name , Address , Average Marks , Date of Admission of the tables Teacher and Student. gg) Display Name , Date of Admission , Date of Birth from the tables Student and Class using Allies of the Tables. hh) Write commands to: (i) DROP the common field STDCODE of Class table. (ii) Now display Name, Date of Admission,

Average Marks and Address from the both of the tables Teacher & Student. (iii) Again ADD the column Dropped before.

(10.2)

a) Display Name, Class, Address and Date of Admission from tables STUDENT and CLASS have similar student code. b) Display all the Sections and Date of Birth from above two tables.

c) Create a view MyClass using the columns Name, DOB, and AvgMark from Student. (10.3) Write the OUTPUT of the following commands from the above table Student.

a) SELECT Name from STUDENT where AvgMark > (SELECT AvgMark from STUDENT where Class=11); b) SELECT X.Name, X.Roll, Y.Address From STUDENT X, STUDENT Y where X.AdmNo=Y.AdmNo; c) SELECT Addres from CLASS where Section IN (SELECT Section from STUDENT where Class>=11);

d) SELECT Count(*), DISTINCT(Section) from CLASS;

e) SELECT Count(*), Section from STUDENT Group By Section Having Class>=10;

f) SELECT (AvgMark * 0.5 from STUDENT where Name like „S%‟;

STDCODE NAME CLASS SECTION AVGMARK DOB

S009 AJAY MALHOTRA 11 A 86.55 12-DEC-1995

S010 KUSUM VIMANI 12 C 79.85 22-MAR-1994

S012 SARITA VERMA 12 C 98 23-JAN-1992

S015 KAILASH SINGH 10 D 78.45 5-OCT-1993

S020 SANJAY SRIVASTAVA 11 K 85.45 10-MAY-1990

S033 KAVITA SAXSENA 9 K 66.50 12-SEPT-1993

S052 BIJAY MAJUMDAR 12 B 88 5-NOV-1989

STDCODE SECTION ADDRESS DOA

S009 A RANCHI 12-MAR-2001

S010 C PATNA 20-MAR-1999

S012 C TATA 13-FEB-2000

S013 D DHANBAD 15-JULY-1999

S022 L KOLKATA 10-MAR-2002

S033 K SILLIGURI 5-MAY-2004

S052 B BHUBANESWER 15-DEC-2003

g) SELECT MIN (AvgMark) from STUDENT; (g.1) SELECT MAX (AvgMark) from STUDENT; h) SELECT SUM (AvgMark) from STUDENT where DOB > “1990-12-13” AND DOB < “1995-1-1”; i) SELECT StdCode, Section from Student UNION SELECT StdCode, Section from Class;

j) UPDATE Class Set Address=‟Ranchi‟ Where StdCode =(Select StdCode From Student Where DOB=”1993-10-15”); NB: You must also go through the ‘Solved Exercises’ of the chapter ‘Review of SQL’.

11. Answer the questions based on the table HOSPITAL given below: [16X1=16] Table: HOSPITAL

Column Name Data type Size Constraint

Ptnt_No Ptnt_Name

Dept Doc_Name Dt_Birth Fees

Ptnt_Phno

Number Varchar2

Varchar2 Varchar2 Date Number

Number

4 15

15 15 --- 6,2

12

Primary Key Not Null

----- Not Null ----- Default 00.00

Check <=12

a) Write the SQL command to create the table Hospital including its constraints. b) Write the SQL command to display the details of all the patients whose date of birth is after 1

st January 2000.

c) Write the SQL command to display the type of Departments. d) Write the SQL command to display the number of patients in each department for the names starts by character “S”. e) Write the SQL command to increase the consultation fees by Rs 50.00 for the patients whose year of birth is before 1950. f) Write the SQL command to change the length of the field Dept by 12.

g) Write the SQL command to display the Name of the Patients, corresponding Departments and Date of Birth, in

alphabetical order of the names of the patients. h) Write the SQL command to remove a record of the Patient No 104. i) Write the SQL command to remove the table. j) Write the SQL command to Include a new attribute Srlno [Number(3)] to the table.

k) Write the SQL command to add Constraints NOT NULL & UNIQUE to Patient No. l) Write the SQL command to display the first 5 characters of the patient‟s name, who are from the department SURGERY.

m) Write the SQL command to display the total amount of fees collected. n) Write the SQL command to display the oldest patient‟s date of birth.

o) Write the SQL command to enter new record as per your choice to the corresponding attributes. p) Write the SQL command to enter data to the attributes Department, Doctor‟s and Patient‟s Name q) Write the SQL command to Discard / Undo the latest changes made in the table.

a) Categorize the DDL and DML commands :

CREATE, TRUNCATE, DELETE, GRANT, ROLLBACK, SELECT , COMMIT , ALTER b) Write the output of the following SQL queries using library functions :

1) SELECT TRUNCATE(22.78,1); 2) SELECT DAYOFMONTH(„2010-10-17‟) , MONTH(Sysdate()); 3) SELECT DAYOFWEEK(CurDate());

4) SELECT SUBSTR(„Common Wealth Games 2010‟,8,6); 5) SELECT CONCAT(LOWER(„Class‟),UPPER(„xii‟)); 6) SELECT INSTR ( TRIM(“ Indoaryan ” , “A”); 7) SELECT LEFT(“To the power of” , 12) , POWER(5,3);

8) SELECT RIGHT(“To the power of” , 8) , POW(5,3); 9) SELECT ROUND(544.4583 , -2);

10) SELECT 15 / 4 , 15 * 2 , 15 + 5 ; 12. Consider another new table DEPARTMENT along with the table TEACHER having the fields: Srlno NUMBER(3),

Ptnt_No NUMBER(4), Deptname VARCHAR2(15), Address DATE. Now read the questions carefully and write the

SQL Commands of the followings. [2X2=4]

(a) Display the Department, Name and Address from the above tables (Hospital and Department). (b) Display the records from both of the tables even those have no common records.

[Question# 7] IT Application [05] 14. a) What benefit does an e-Business offers to the customers? b) How e-Learning is being benefited to the student class?

c) How has society benefited from e-Governance? d) What are good interface? e) How do the connection between Front End and Back End work together in the application of IT? f) Explain the application of the following in real life project on : (i) e-Governance (ii) e-Learning (iii) e-Business g) Mr. Anand is working as a Planning Manager in Zoom Tech. He wants to create the forms with the following functions. Choose

appropriate controls from Text Field, Label, Radio Button, Check Box, List Box, Panel, Combo Box, Command Button, Text Area and write in the third column.

SNo Control Used to Control

1 Enter Name of Customer

2 Enter Mobile No.

3 Select Connection Type

4 Display the list of Items to be selected

5 Display total Amount of Bill

6 Display Name of all Customers with corresponding Items month wise

7 Insertion of a frame for group selection.

“The laws of total development of individual and society are – Concentricity, Self elevation and

Eugenics i.e. Ideal centric go-of-life, Accordingly self-manipulation and Bio-psychic compatible

marriage; let‟s uphold it…”

Hope we will be in touch for longer time, from any corner of the globe, I do wish - be a person with your evolving qualities and efficiencies for your greater surroundings. Yours own forever – S.M.

Developed and Designed by:

Dr. Srikumar Mukherjee, Dept. of Computers, Delhi Public School, Ranchi

Email: srikumar2005_ranchi@yahoo.co.in / seeence@gmail.com

Ph # +91-9470932544 / 909753620 (Mob)

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www.indoaryan.org

COLLECT the Question and Answer papers of Sem-II and Pre-Board Exams and critically read and

understand it ; which were already distributed to you. For further you are free to contact...