Computer Science, Informatics Practices and Multimedia & Web Technology is subject which require extensive practical on hands knowledge. As much as you practice your confidence level will increase because in CBSE Board Exam there are questions to write code of a program, debug error from a code or write the output of a code.
You have to do lots of practice to attempt any type of questions. For this you may need various type of software like – Java JDK, Netbeans, MySQL, GUI version of MySQL, Turbo C and Python software with IDE. You can download required softwares from here.