Time allowed : 3 hours Maximum Marks: 70

Transcription

1 SAMPLE PAPER-2015 CLASS-XII COMPUTER SCIENCE(C++) Time allowed : 3 hous Maximum Maks: 70 Geneal Instuction 1. Please check that this question pape contains 7 questions. 2. Please wite down seial numbe of the question befoe answeing it. 3. All questions ae compulsoy. 4. Pogamming language : C++ Q1.(a) What is the diffeence between Class and Object? Give an example in c++ to illustate both. (2 (b) Name the heade files, to which the following built-in functions belong to: (1 (i) getc ( ) (ii) exit() (c) Identify and coect the eo(s) in the following pogam: (2 #include <iosteam.h> #include <conio.h> void main() float class = 10.7; float y; y = class % 5.45; cout<<class <<", "<<y; getch(); (d) Give the output of the following Pogam: (2 #include<iosteam.h CONST int CONST int a = 3; void func (int &x, int y, int *z) cout<< CONST << endl; void main( ) a + = x; y * = a; *z = a + y; cout<<a<<, <<x<<, <<y<<, <<z<<endl; int a = 2, b=5; func(::a,a,&b); cout<<::a<<, <<a<<, <<b;

2 (e) Give the output of the following Pogam: (3 #include<iosteam.h> void withdef ( int HisNum = 30) fo ( int I = 20 ; I<= HisNum; I+= 5) cout<<i<<, ; cout<<endl; void Contol( int &MyNum ) MyNum + = 10; withdef(mynum); void main( ) int YouNum = 20; Contol(YouNum ); withdef( ); cout<< Numbe= <<YouNum<<endl; (f) Study the following pogam and select the possible output fom it : (2 #inlude<iosteam.h> #include<conio.h> #include<stdlib.h> const int LIMIT = 5; void main( ) andomize( ); int Points; Points = andom(limit); fo ( int p = Points; p>=100; p--) cout<<p<< # ; cout<<endl; (i) 104#103#102#101#100# (ii) 104#103#102#101#100 (iii) 101#102#103#104#105#

3 (iv) 014#103#102#101#100# Q.2 (a) What do you undestand by Copy Constucto? Explain it with a suitable example. (2 (b) Answe the questions (i) and (ii) afte going though the following class: (2 class Dance int days; Dance ( ) // Function 1 days = 50; cout << Dance stats now << endl; void danceschedule( ) // Function 2 cout << The schedule of the dance stats hee << endl; Dance (int Duation) // Function 3 days = Duation; cout << Dance jouney stats now << endl; ~ Dance ( ) // Function 4 cout << Dance, life cycle ends hee << endl; ; (i) In Object Oiented Pogamming, what is Function 4 efeed as and when does it get invoked/ called? (ii) In Object Oiented Pogamming, which concept is illustated by Function 1 and Function 3 togethe? Wite an example illustating the calls fo these functions. (c) Define a class Mobile in C++ with the following desciptions : (4 Pivate membes : mcode of type sting mtype of type sting mosname of type sting msceensize of type intege mppvalue of type float mdiscount of type float mactsalepice of type float

4 A function AdjustPice ( ) which calculates and assigns the value of mactsalepice as follows : mosname mactsalepice Andoid mppvalue-10% on mpvalue ios mppvalue-9 % on mpvalue Othes mppvalue-15 % on mpvalue Public membes: A constucto to assign initial values of mcode with MCODE01, mtype with Tablet, mosname with Andoid, mssceensiz, mppvalue, mdiscount and mactsalepice with 0. A function GetData( ) to input the values of the data all membes vaiables. and invoke the AdjustPice( ) function. A destucto to pint object is being destoyed. A function to Display( ) which displays the content of all the data membes fo a Mobile. (d) Answe the questions (i) to (iv) based on the following code: (4 class Ca cha Model[10]; cha Date_of_puchase[10]; cha Company[20]; public( ); Ca( ); void entecadetail( ); void showcadetail( ); ; class Accessoies : public Ca potected: cha steeo_tape[30]; cha sheet_cove[20];

5 float Pice; Accessoies( ); void enteaccessoiesdetails( ); void showaccessoiesdetails( ); ; class Deale : public ca int No_of_deales; cha deales_name[20]; int No_of_poducts; Deale( ); void entedetails( ); void showdetails( ); ; (i) (a) How many bytes will be equied by an object of class Ca and an object of class Deale? (b) Which type of inheitance is illustated in the above c++ code? (ii) (iii) (iv) Wite names of all the data membes which ae accessible fom the objects of class Deale. Wite names of all the membes accessible fom membe functions of class Accessoies. Wite names of all the membe functions which ae accessible fom objects of class Deale. Q.3 (a) Wite the function AddAay() in C++ to club the values( ascending ode) of two aays. (3 (b) Wite enumeation in C++ to stoe the names of days. (3 (c) Define functions pushnode( ) to inset nodes and popnode( ) to delete nodes, fo a Linked List implemented Stack having the following stuctue fo each node: (4 stuct node cha student[20];

6 int age; node *node; ; (d) What ae the diffeence between Linked List And Dense List? (2 (e) Wite a use defined function Uppe_half() which takes a two dimensional aay A, with size N ows and N columns as aguments and point the uppe half(diagonally) of the aay. eg. ( If A is The Output Will be Q4. a) Obseve the pogam segment given below caefully and answe the question that follows: 1 class Student long ollnumbe; cha student[20]; float maks; void GetData( ); void ShowData( ); void PointChange( ); long getrollnumbe( ) etun ollnumbe; ; void ReplaceUpdateMaks(long Id) fsteam file; file.open ( Team.Dat,ios::binay ios::in ios::out); Student T; int Recod=0, found=0; while(!found && file.ead((cha*)&t, sizeof(t))) if (Id==T.getRollNumbe( ))

7 cout<< Ente New Maks ; T.PointChange (); //Statement 1 // Statement 2 Found=1; Recod++; if(found==1) cout<< Recod Updated ; file.close( ); Wite the statement 1 to position the File Pointe at the beginning of the Recod fo which the Student's Roll Numbe matches with the agument passed, and Statement 2 to wite the updated ecod at the Position. (b) Wite a function in C++ to pint the count of the wod Technology and India (ignoing the case) as an independent wod in a text file education.txt. If the file education.txt content is as follows: Technology bings innovation in education. Misuse of technology destoys the system. Indian education is becoming tech-savvy. (c) Wite a function in C++ to seach and display details, whose destination is Chandigagh fom a binay file Flight.Data. Assuming the binay file is containing the objects of the following class: class FLIGHT int Fno; // Flight Numbe ; cha Fom[20]; // Flight Stating Point cha To[20]; // Flight Destination cha * GetFom ( ); etun fom; cha * GetTo( ); etun To; void input() cin>>fno>>; gets(fom); get(to); void show( ) cout<<fno<< : <<Fom << : <<To<<endl; Q 5. (a) Diffeentiate between Pimay key and Foeign Key in context of RDBMS. Give suitable example. (2 (2 (3

8 (b) Wite SQL commands fo the statements (a) to (i) and give outputs of the SQL Queies (i) to (vi) on the basis of CUSTOMER_DETAILS (1*6=6 Table: CUSTOMER_DETAILS CUST_ID CUT_NAME ACCT_TYPE ACCULT_AMT DOJ GENDER CNR_101 Manoj Saving M CNR_102 Rahul Cuent M CNR_103 John Saving M CNR_104 Steve Salay Saving M CNR_105 Manpeet Cuent F CNR_106 Catheine Saving F CNR_107 Ramesh Saving M i. To select all the custome of Saving and Cuent account type. ii. To list the names of custome with thei date of joining in descending ode. iii. To list the customes who have joined afte 1998 May 31. iv. To display female customes with accumulated amount geate than v. To list the custome having 15 lettes name. vi. To list the all account types. Q6. (a) State and veify Distibutive Law and Demogan s Law using tuth table and algebaically. (2 (b) Wite the equivalent Boolean Expession fo the following Logic Cicuit (1 (c) Wite the equivalent POS expession of following SOP fom : (1 F (x,y,z)= (0,2,4,6) (d) Reduce the following Boolean Expession using K-Map: (3 F(U,V,W,Z)= (0,1,4,5,6,7,11,12,13,14,15) (e) Give the dual of (A+BC+AB) (1 Q.7 (a) What is the diffeence between Hub and message Route? (1 (b) Diffeentiate the following : (1 (i) (ii) GSM and CDMA FOSS and OSS. (c) What is Vius? Give two examples. (1 (d) Define and explain Cybe Law. (1

9 (e) The Sony has set up its Banch at Sinaga fo its office and web based activities. It has 4 Zone of buildings as shown in the diagam: Zone Z Zone Y Zone X Zone U Banch to banch distances ae : Zone X to Zone Z 40 Mt Zone Z to Zone Y 60 Mt Zone Y to Zone X 135 Mt Zone Y to Zone U 70 Mt Zone X to Zone U 165 Mt Zone Z to Zone U 80 Mt Numbe of Computes: Zone X 50 Zone Z 130 Zone Y 40 Zone U 15 (e1) (e2) Suggest a most suitable cable layout o Netwoking Toplogy of connections between the Zones. (1 Suggest the most suitable place (i.e., Zone) to house the ERP and BI Seve of this oganization with a suitable eason, with justification. (1 (e3) Suggest the placement of the following devices with justifications: (1 (1) Repeate (2) Hub / Switch (e4) Which is the most economic type of cable fo the selected topology? (1 (f) Diffeentiate the following pais: (2 1. Intenet and ARPANET. 2. Coaxial Wie and Optical Fibe. Ceated by Amit Chheti fo CBSE-CPP XII 2013; Copyight(C): Amit Chheti,2013