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C.  Fill in the blanks using the words given below:

                                           Hints

                                                   antivirus, firewall, malware, trojan horse


                     1.  Malicious software is also known as ................................ .

                     2.  A set of programs that identify and remove malware is known as .......................... software.
                     3.  A ................................ acts like a gatekeeper and prevents unauthorised access to a computer
                        network.

                     4.  The purpose of a ................................ is to conceal itself inside software that seems legitimate.



                  Let's Do            It                                                    Section B (Subjective)


                 A.  Short answer type questions.

                     1.  What is a trojan?

                        ...................................................................................................................................................................................
                     2.  What is the use of an antivirus program?

                        ...................................................................................................................................................................................
                     3.  What is a boot sector virus?

                        ...................................................................................................................................................................................
                     4.  What does MBR stand for?
                        ...................................................................................................................................................................................

                 B.  Long answer type questions.

                     1.  What is malware? How does it affect your computer? Mention some types of malware.
                        ...................................................................................................................................................................................

                        ...................................................................................................................................................................................

                        ...................................................................................................................................................................................
                     2.  Differentiate between virus and worm.

                        ...................................................................................................................................................................................
                        ...................................................................................................................................................................................

                        ...................................................................................................................................................................................
                     3.  How do you know your computer has a virus?

                        ...................................................................................................................................................................................

                        ...................................................................................................................................................................................
                        ...................................................................................................................................................................................




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