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Explore Class 12 Computer Science past and model questions by chapter, year, marks and question type.
115 questions found
Explain mobile computing with its advantages and disadvantages.
Which statement is incorrect about the object-oriented approach?
Emphasis is on data rather than procedure.
Data is hidden and cannot be accessed.
Objects communicate through functions.
It supports abstract data but not the class.
Which of the following keywords are used to declare a variable in JavaScript?
int or var
float or let
var or let
char or var
Which of the following is a server-side scripting language?
JavaScript
MySQL
PHP
jQuery
Demonstrate a program in C to create a data file named score.dat to store students’ information with Reg_no, name, gender, and address. The program should ask the user to continue or not. When finished, the program should also display all the records in the proper format.
Develop a program in C using structure to ask the information of any 12 students with roll_number, name and marks scored in sub1, sub2, and sub3. Also, display them in proper format along with the calculation of total and percentage. [Note: the full marks of each subject is 100.]
Why do most business organizations prefer setting their network with the client-server architecture? Write its advantages and disadvantages.
Write down any five qualities of good software.
Which of the following techniques is not implemented to protect a database?
Rollback
Backup
Recovery
Firewall
Which of the following is an incorrect IP address?
192.168.0.1
192.168.1
172.255.0.0
202.10.79.4
Describe the concept of Object Oriented and Procedure Oriented Programming in brief.
Which one of the following SQL commands is executed to display all the records having a second letter in the LNAME (LAST NAME) as "A" from the customer table?
SELECT * FROM CUSTOMER WHERE LNAME LIKE "?A%";
SELECT * FROM CUSTOMER WHERE LNAME LIKE "_A%";
SELECT * FROM CUSTOMER WHERE LNAME LIKE "A%";
SELECT * FROM CUSTOMER WHERE LNAME LIKE "%A";
Develop a program in JavaScript to exchange/swap the values of any two variables.
Which of the following commands is executed in PHP to concatenate the variables y ?
$x + $y
y
concat(y)
y
Nowadays most business organizations prefer applying relational model for database design in comparison to other models. Justify the statement with your arguments.