Which term describes viruses that append their code to the host code without making changes to the latter or relocating the host code?

Which term describes viruses that append their code to the host code without making changes to the latter or relocating the host code?

• A. Non-persistent viruses
• B. Add-on viruses
• C. Persistent virus
• D. E-mail virus

Answer: (B)

Adding code to the host program without altering or relocating its own code is the hallmark of add-on viruses. They attach their payload to the end of an executable, leaving the original host file intact, so the host runs as if nothing changed while the virus code sits after it and can execute. This is different from other types that describe how long the virus stays in memory (non-persistent vs persistent) or how it spreads (an e-mail virus).

Adding code to the host program without altering or relocating its own code is the hallmark of add-on viruses. They attach their payload to the end of an executable, leaving the original host file intact, so the host runs as if nothing changed while the virus code sits after it and can execute. This is different from other types that describe how long the virus stays in memory (non-persistent vs persistent) or how it spreads (an e-mail virus).