CBSE Class 12 Informatics Practices Question Paper SA2 2013 (1). Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.
1.(a) Amit has been observing the keystrokes when his sister is opening her laptop to learn her password. What is the name of the security issue in this context?
(b) Two companies A and B do business with each other and therefore they want to interconnect their computer networks. Which device out of the following should you suggest to be installed for communication between them?
(c)___________is a short distance wireless media that can communicate only between two devices at a time.
(i) Radio wave
(d) What is BOSS?
(e) Compare proprietary software and shareware.
(f) Name two open source software each in the following categories: (i) Graphics/Photo editor
(ii) Prgramming language
(g) Explain the following terms in the context of network security: (i) Denial of service attacks
(ii) File permissions
2. (a) While designing a GUI application, Ankita included a listin her frame. Now she wants to make it single selection. Which property of list should she use and how?
(b) What is the use of default clause in a switch-case statement?
(c) What is the difference between <td> and <th> tags?
(d) Write any two features of XML.
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