FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -virus (computer virus) A computer virus is malicious code that replicates by copying itself to another program, computer boot sector or document and changes how a computer works. A virus spreads between systems after some type of human intervention.

Detailed explanation-2: -File-infecting Virus A virus that attached itself to an executable program. It is also called a parasitic virus which typically infects files with .exe or .com extensions. Some file infectors can overwrite host files and others can damage your hard drive’s formatting.

Detailed explanation-3: -Viruses use executable files to spread. Worms take use of system flaws to carry out their attacks. Trojan horse is a type of malware that runs through a program and is interpreted as utility software.

Detailed explanation-4: -A Virus is a malicious executable code attached to another executable file which can be harmless or can modify or delete data. Trojan Horse is a form of malware that captures some important information about a computer system or a computer network. Antivirus softwares are used for protection against viruses.

Detailed explanation-5: -Virus. A virus is a piece of code that inserts itself into an application and executes when the app is run. Once inside a network, a virus may be used to steal sensitive data, launch DDoS attacks or conduct ransomware attacks. A virus cannot execute or reproduce unless the app it has infected is running.