CBSE Computer Science sample paper2 Class XI 2010

http://www.cbseguess.com/-------------------------------------------------------------------------------------------------------www.cbseguess.com Other Educational Portals www.icseguess.com | www.ignouguess.com | www.dulife.com | www.magicsense.com Sample Paper – 2010 Class – XI Subject – Computer Science SUB. CODE: 083 Instructions: 1. All questions should be attempt. There is no ant alternative in any question 2. .Work should be neat and clean without overwriting. 3. Each program should be with Output. 4. Prompts the values of variables, where as required. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SECTION-A Q.1 Convert the following numbers as expected. ( 2 ) (a) (1001.101)2 = ( )10 (b) (75)8 = ( )16 Q.2 Write the 4-4 examples of DOS internal and external commands. ( 2 ) Q.3 What is main role of sizeof( ) in C++ ? Explain with example. ( 2 ) Q.4 What is BOOTING process? How it is important in Computer? ( 2 ) Q.5 What is difference between interpreter and complier? ( 2 ) Q.6 Draw the block diagram for nested if-else statement. ( 2 ) Q.7 Explain any 2 factors which affect to processor performance. ( 2 ) Q.8 Explain either Time sharing or real time operating system. ( 2 ) Q.9 Explain the operator precedence with suitable example. ( 2 ) SECTION-B Q.10 Explain about different states of process in operating system. ( 3 ) Q.11 Describe to either paging or segmentation. ( 3 ) Q.12 Give the name type of different characteristics of OOPs. ( 3 ) Q.13 Differentiate between break and exit( ) with example. ( 3 ) http://www.cbseguess.com/-------------------------------------------------------------------------------------------------------www.cbseguess.com Other Educational Portals www.icseguess.com | www.ignouguess.com | www.dulife.com | www.magicsense.com Q.14 Re-write the following snippet after correcting the syntax error and also under line to corrected code. ( 3 ) main() { int integer; char string[20]={“Kendriya”}; integer=strlen(string); strcat(”Vidyalaya”,string); cout>>integer+integer;<