HBSE Class 12 Question Paper 2021 Computer Science

CLASS : 12th (Sr. Secondary) Code No. 207
Series : SS-April/2021
Roll No.

dEI
dEI;wVj foKku
COMPUTER SCIENCE
Hkkx – I
PART – I
¼vkRefu"B iz'u½
(Subjective Questions)
(Academic)
[ fgUnh ,oa vaxzsth ek/;e ]
[ Hindi and English Medium ]
(Only for Fresh/School Candidates)

le; : 2 21 ?k.Vs ] [ iw.kk±d : 40 ¼Hkkx–I : 20, Hkkx–II : 20½
Time allowed : 2 21 hours ] [ Maximum Marks : 40 (Part–I : 20, Part–II : 20)

iz'u&i= nks Hkkxkas eas foHkkftr gS % Hkkx–I ¼vkRefu"B½ ,oa Hkkx–II ¼oLrqfu"B½A ijh{kkFkhZ dks nksuksa Hkkxkas ds iz'ukas
ds mÙkj dks viuh mÙkj iqfLrdk eas fy[kuk gSA iz'u&i= dk Hkkx–I ijh{kk vkjEHk gksus ij igys mÙkj&iqfLrdk
ds lkFk fn;k tk,xk rFkk Hkkx–II ds fy, vkf[kjh dk ,d ?kaVs dk le; fn;k tk,xk vFkkZr~ ijh{kk lekIr
gksus ls ,d ?kaVk iwoZ ijh{kkFkhZ dks Hkkx–II dk iz'u i= fn;k tk,xkA
Hkkx–I ds iz'u&i= esa dqy 8 iz'u ,oa Hkkx–II ds iz'u&i= eas dqy 20 iz'u gSaA
Question paper is divided into two Parts : Part–I (Subjective type) and Part–II
(Objective type). Answer the questions of both parts in your answer-book. Part–I
of question paper with answer-book will be provided with starting of
Examination and last one hour of Examination will be given for Part–II i.e.
question paper of Part–II will be provided before one hour of the end of
Examination.
Total questions in question paper of Part–I are 8 and of Part–II are 20.

• Ñi;k tk¡p dj ysa fd Hkkx–I ds bl iz'u-i= esa eqfnzr i`"B 4 rFkk iz'u 8 gSaA
Please make sure that the printed pages in this question paper of Part–I are 4 in
number and it contains 8 questions.

207/ I P. T. O.

(2) 207
• iz'u-i= esa nkfgus gkFk dh vksj fn;s x;s dksM uEcj dks Nk= mÙkj-iqfLrdk ds eq[;-i`"B ij fy[ksaA
The Code No. on the right side of the question paper should be written by the
candidate on the front page of the answer-book.

• Ñi;k iz'u dk mÙkj fy[kuk 'kq: djus ls igys] iz'u dk Øekad vo'; fy[ksaA
Before beginning to answer a question, its Serial Number must be written.

• mÙkj-iqfLrdk ds chp esa [kkyh iUuk / iUus u NksMsa+A
Don’t leave blank page/pages in your answer-book.
• mÙkj-iqfLrdk ds vfrfjDr dksbZ vU; 'khV ugha feysxhA vr% vko';drkuqlkj gh fy[ksa vkSj fy[kk mÙkj u
dkVsaA
Except answer-book, no extra sheet will be given. Write to the point and do not
strike the written answer.

• ijh{kkFkhZ viuk jksy ua0 iz'u&i= ij vo'; fy[ksaA
Candidates must write their Roll Number on the question paper.

• d`i;k iz'uksa dk mÙkj nsus lss iwoZ ;g lqfuf'pr dj ysa fd iz'u-i= iw.kZ o lgh gS] ijh{kk ds mijkUr bl
lEcU/k esa dksbZ Hkh nkok Lohdkj ugha fd;k tk;sxkA
Before answering the question, ensure that you have been supplied the correct and
complete question paper, no claim in this regard, will be entertained after
examination.

lkekU; funsZ'k %
General Instructions :

(i) lHkh iz'u vfuok;Z gSaA
All questions are compulsory.
(ii) izR;sd iz'u ds vad mlds lkeus n'kkZ;s x, gSaA
Marks of each question are indicated against it.

(iii) vkids mÙkj vadkuqlkj gksus pkfg,A
Your answer should be according to marks.

207/ I

(3) 207
uksV % ç'u Øekad 1 ls 3 esa ls dksbZ nks ç'u djsaA 'ks"k llHkh
Hkh vfuok;Z gSaA
Attempt any two questions from Question No. 1 to 3. Rest are compulsory.

1. bugsfjVsal dh ifjHkk"kk fyf[k,A fdUgha nks çdkj ds bugsfjVsal dk o.kZu dhft,A 4
Define Inheritance. Explain any two types of Inheritance.

2. dULVªDVj vkSj fMLVªDVj esa vUrj fyf[k,A fdUgha nks çdkj ds dULVªDVj dk o.kZu djsaA 4

Write difference between constructors and destructors. Explain any two types
of constructors.

3. ,d Dykl distance cuk,¡] ftuesa fuEu 'kkfey gksa % 4
MkVk esEcj % QhV] bap
esEcj QaD'ku %
(i) oSY;w nsuk
(ii) oSY;w dks tksM+uk
(iii) oSY;w fçaV djuk
Create a class distance that includes :
Data members : feet, inch
Member functions :
(i) To assign values
(ii) To add values
(iii) To print values (feet, inch, distance)

4. bugsfjVsal ds rhu foft+fcfyVh eksM~l dk o.kZu djsaA 3

Explain the three visibility modes of inheritance.

5. Qkby VªkUlQj çksVksdkWy (FTP) ds dkalsIV dk o.kZu djsaA 3

Explain the concept of File Transfer Protocol (FTP).

207/ I P. T. O.

(4) 207

6. ,sjs dh ifjHkk"kk fyf[k,A blds D;k-D;k çdkj gSa \ 2

Define Array. What are its types ?

7. MsVkcsl dh ifjHkk"kk fyf[k,A MsVkcsl ds nks Qk;ns fyf[k,A 2
Define Database. Write any two advantages of Database.

8. baVjusV dh ifjHkk"kk fyf[k,A 2

Define Internet.

S

207/ I

CLASS : 12th (Sr. Secondary) Code No. 207
Series : SS-April/2021
Roll No.

dEI
dEI;wVj foKku
COMPUTER SCIENCE
Hkkx – II
PART – II
¼oLrqfu"B iz'u½
(Objective Questions)
(Academic)
[ fgUnh ,oa vaxzsth ek/;e ]
[ Hindi and English Medium ]
(Only for Fresh/School Candidates)

• Ñi;k tk¡p dj ysa fd Hkkx–II ds bl iz'u-i= esa eqfnzr i`"B 4 rFkk iz'u 20 gSaA
Please make sure that the printed pages in this question paper of Part-II are 4 in
number and it contains 20 questions.
• ijh{kkFkhZ viuk jksy ua0 iz'u&i= ij vo'; fy[ksaA
Candidates must write their Roll Number on the question paper.

• d`i;k iz'uksa dk mÙkj nsus lss iwoZ ;g lqfuf'pr dj ysa fd iz'u-i= iw.kZ o lgh gS] ijh{kk ds mijkUr bl
lEcU/k esa dksbZ Hkh nkok Lohdkj ugha fd;k tk;sxkA
Before answering the question, ensure that you have been supplied the correct and
complete question paper, no claim in this regard, will be entertained after
examination.

lkekU; funsZ'k %
General Instructions :
(i) lHkh iz'u vfuok;Z gSaA
All questions are compulsory.

207/ II P. T. O.

(2) 207
(ii) iz'u Øekad 1 ls 20 rd oLrqfu"B iz'u gSaA izR;sd iz'u 1 vad dk gSA
Questions from 1 to 20 are objective type questions. Each question is of 1
mark.

1. URL dk iw.kZ :i -------------- gSA 1
Full form of URL is ……………. .

2. -------------- osc czkmtj dk ,d mnkgj.k gSA 1
……………. is an example of Web Browser.

3. LAN dk iw.kZ :i -------------- gSA 1
Full form of LAN is ……………. .

4. ,d dEI;wVj dh baVjusV ij ----------------- ls igpku gksrh gSA 1
(A) bZ-esy ,Mªsl (B) IP ,Mªsl
(C) FTP ,Mªsl (D) VsyusV ,Mªsl
A computer on Internet is identified by ………….. .
(A) E-mail address (B) IP address
(C) FTP address (D) Telnet address

5. fdlh osclkbV dk esu ist/+ eq[k i`"B/igyk ist+ ------------ gksrk gSA 1
(A) czkmt+j ist+ (B) lpZ ist+
(C) gkse ist+ (D) cqd ekdZ
A websites main page/front page/first page is called ………….. .
(A) Browser page (B) Search page
(C) Home page (D) Book mark

6. ----------------- VSx dk mi;ksx ykbu czsd ds fy, gksrk gSA 1
………….. tag is used to insert line break.

7. ----------------- VSx dk ç;ksx HTML ist+ esa fyad tksM+us ds fy, gksrk gSA 1
(A) <li> (B) <l>
(C) <al> (D) <a>
………….. tag is used for adding links to HTML page.
(A) <li> (B) <l>
(C) <al> (D) <a>

207/ II

(3) 207
8. <UL> VSx HTML esa -------------- cukrk gSA 1
<UL> tag is used to create ……………. in HTML.

9. best VSx dk ----------------- ,fVªC;wV bZest dk jkLRkk ¼ikFk½ crkrk gSA 1
(A) alt (B) scr
(C) pth (D) src
………….. attribute of image tag specifies the path to the image.
(A) alt (B) scr
(C) pth (D) src

10. HTML esa ----------------- djSDVj VSx ds can gksus dks n'kkZrk gSA 1
(A) \ (B) /
(C) ! (D) ! !
………….. character is used to represent closing of a tag in HTML.
(A) \ (B) /
(C) ! (D) ! !

11. -------------- ,d DML dekaM gSA 1
……………. is a DML command.

12. SQL dk iw.kZ :i -------------- gSA 1
Full form of SQL is ……………. .

13. 2NF es]a laca/k 1NF esa gksuk pkfg, vkSj lHkh -------------- attributes çkFkfed key ij iwjh rjg
QaD'kuy fMisaMsaV gSA 1
A relation is in 2nd normal form if it is in 1N form and every …………….
attribute is fully dependent on the primary key.

14. D;w -------------- fu;e ij dke djrh gSA 1
(A) LIFO (B) FIFO
(C) FILO (D) mijksDr esa ls dksbZ ugha
Queue works on ……………. principle.
(A) LIFO (B) FIFO
(C) FILO (D) None of the above

15. ,d 1−MkbesU'kuy ,sjs esa] ,sjs dk lkbt ---------------- gksrk gSA 1
(A) UB − LB + 1 (B) LB
(C) UB + 2 (D) UB + LB

207/ II P. T. O.

(4) 207
In 1-dimensional array, the size of array is ……………… .
(A) UB − LB + 1 (B) LB
(C) UB + 2 (D) UB + LB

16. LVSd es]a bal'kZu vkWijs'ku dks ------------- vkWijs'ku Hkh dgrs gSaA 1
(A) iq'k (B) iksi
(C) nksuksa (A) ,oa (B) (D) dksbZ Hkh ugha
In Stack, Insertion operation is also called ………….. operation.
(A) PUSH (B) POP
(C) Both (A) & (B) (D) None

17. ÝsaM QaD'ku dsoy çksVsfDVM esaclZ dks ,Dlsl dj ldrk gS çkbosV dks ughaA ¼lgh/xyr½ 1
Friend functions can access only protected members not the private members.
(True/False)

18. C++ esa -------------- lgh oSfj,cy ugha gSA 1
(A) ¶yksV (B) fj;y
(C) Mcy (D) baV (int)
………… is not a correct variable type in C++.
(A) Float (B) Real
(C) Double (D) int

19. C++ dksM ykbu -------------- ls [kRe gksrh gSA 1
(A) ; ¼lsfedksyu½ (B) . ¼Qqy LVkWi½
(C) , ¼dkWek½ (D) /¼LyS'k½
A C++ code line end with ………… .
(A) ; (semicolon½ (B) . (full stop)
(C) , (comma) (D) /(slash)

20. C++ esa Dykl ds esaclZ ckbZ fMQkYV -------------- gksrs gSA 1
(A) ifCyd (B) çkbosV
(C) çksVsDVsM (D) LVSfVd
In C++, members of a class are ……………. by default.
(A) Public (B) Private
(C) Protected (D) Static

207/ II
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