CBSE Computer Science sample paper class XII 2007

http://www.cbseguess.com/-------------------------------------------------------------------------------------------------------------------www.cbseguess.com Other Educational Portals www.icseguess.com | www.ignouguess.com | www.dulife.com | www.magicsense.com Code No. 083 Please check that this question paper contains 4 printed pages. Code number given on the right hand side of the question paper should be written on the title page of the answer-book by the candidate. Please check that this question paper contains 7 questions. Please write down the serial number of the question before attempting it. COMPUTER SCIENCE Class XII Time allowed: 3 hours Maximum Marks: 70 Instructions: (i) All questions are compulsory. (ii) Programming language: C++ 1. (a) Find the syntax error(s), if any in the following program: 2 Underline each correction. #include const int size=5; main() { int x[size],*y, z[size] for(i=0;i<5;i++) { x[i]=I; z[i]=i+3; y=z; x=z; size = size+1; } } (b) Give the output of the following program segment:. 2 char * NAME = “a ProFiLe”; for(int x=0;x 20. 2 (e) Give the output of the following SQL commands: 4 (i) Select COUNT(DISTINCT charges ) from hospital; (ii) Select MIN(age) from hospital where Sex=’M’; (iii) Select SUM(charges) from hospital where Sex =’F’; (iv) Select avg(charges) from hospital where dateofadm>{12/05/06}; 6. (a) What is the difference between LAN & MAN? 2 (b) Explain the following terms: (i) FTP (ii) URL 2 (c) Differentiate between Hacker & Cracker? 1 (d) TKM Centenary public school in Kollam is setting up the network between its different wings. There are four wings named as Seniors (S), Kids (K), Juniors (J) and Hostel (H). Distance between various buildings is given below: (i) Suggest a valid topology for networking the computer of all wings 1 (ii) Name the wing where the server to be installed. Justify your answer. 1 (iii)Suggest the placement of Hub or Switch in the network. 1  Wing K to S 100m Wing K to J 200m Wing K to H 400m Wing S to J 300m Wing S to H 100m Wing J to H 450m Wing K 10 Computers Wing J 100 Computers Wing H 50 Computers Wing S 200 Computers