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FIREWALL

                 The term 'firewall' originally referred to a physical barrier designed to contain a fire or prevent
                 its spread within a building. In a computer, a firewall is a software or hardware-based network

                 security  system  that  controls  incoming  and  outgoing  network  traffic  according  to  a  set  of
                 predefined rules. It acts as a gatekeeper and prevents unauthorised access to a computer network.
                 A firewall examines each data packet that arrives on the network and decides whether to allow or
                 block it based on these rules. Essentially, a firewall creates a barrier between a trusted and secure
                 internal network and an external network (such as the Internet) that is considered untrusted and

                 potentially insecure.

                    Reb            t


                         A computer virus is a ‘piece of code’ or program developed to corrupt data or program
                       files stored on a computer system.
                        Malware is a broad term for various types of malicious software designed to damage,
                       disrupt, or gain unauthorised access to a computer system.
                        The different types of malware  are  the worms, trojan  horses, spywares,  ransomware,
                       rootkits, and backdoors.

                        Antivirus software is a program designed to identify, prevent, and remove malware from
                       your computer.
                        A firewall is a software or hardware-based network security system that controls incoming
                       and outgoing network traffic according to a set of predefined rules.





                   OneOne Touch           Learn                                             Section A (Objective)



                 A.  Tick (3) the correct option.
                     1.  Which of the following is not a type of computer virus?


                        a. Macro Virus                                    b. E-mail Virus
                        c. Boot Sector Virus                              d. Trojan Horse


                     2.  What is another name for a program file virus?
                        a. File-infecting virus                           b. File injector virus


                        c. Both a and b                                   d. None of these

                     3.  What is Norton?

                        a. System Software                                b. Antivirus

                        c. Operating System                               d. All of these



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