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Showing posts from May, 2018

Computer Virus

                                          Computer Virus Computer Virus:                    Computer virus is one program or piece of code typically affect on the system such as a corrupting file,destroy itself.    Following are the different categories of                  viruses:                     i) Boot Sector virus                    ii) Macro virus                   iii) Multipartic  virus                   iv) TSR virus                    v) Stealth virus                      i)Boot Sector Virus:  Its spread using physical media like floppy disks, M.B.R., Hard Drives etc,.  Booting process means loading the operating system into the main memory. This virus replace a some booting files with their corrupted files. A boot sector virus is able to infect a computer only if the virus is used to boot up the computer. ii)Macro Virus:  Macro is one special purpose command language. Macro virus is written in the m

Network Security

                                        Network Security       Network Security:                    Network security is a one privacy  policy  which tries to keep a secure the whatever data,files,directories in your computer network.It gives security hardware as well as software.                 Authorization of access to data in network which is controlled by the network admin.Users are assigned only using their username and password. Various way which gives security to the network :  Encryption Firewall Antivirus software IDS(Intrusion Detection System) IPS UTM     1. Encryption:         Encrypting communication  between two hosts its also gives a privacy that's security. 2. Firewall:         Its one types physical barrier. It filter network traffic and reduce the risk that malicious packets travelling over the network. 3.Antivirus software:          Its one virus protection software. Which prevent to viruses,worms and Trojan horses. Its con