Go back to EX0-107 - SCNP Strategic Infrastructure Security

Question :-

Your network has been hit by a very bad virus recently. As you tracked the virus through the network, it was changing from system, to system. Each time it went to infect a system; it had evolved slightly to have a different file size, or different file structure. After extensive work, you and your team were able to isolate and remove the virus from the network. Which of the following best identifies the type of virus that was in your network?
Boot Sector Virus
Macro Virus
Stealth Virus
Multi-part Virus
Polymorphic Virus

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