Which of the following infection methods affect a single area in the file? (Choose three.)*1 pointPrepending InfectionAppending InfectionOverwriting InfectionCavity InfectionSandwich Infection

To determine which infection methods affect a single area in the file, we need to analyze each option provided.

1. Prepending Infection: This method involves adding malicious code at the beginning of the file, which can potentially affect only a specific area within the file. Therefore, it is a possible answer.

2. Appending Infection: This method involves adding malicious code at the end of the file. Similar to the previous method, it can also target a single area within the file. Hence, it is another possible answer.

3. Overwriting Infection: This method involves replacing a specific area of the file with malicious code. Since it specifically targets and affects a single area, it is a valid answer.

4. Cavity Infection: This method involves creating a cavity or hollow space within the file and inserting malicious code. It does not necessarily target a single area but rather affects the overall structure of the file. Therefore, it is not a valid answer.

5. Sandwich Infection: This method involves inserting malicious code between two legitimate sections of the file. It does not specifically target a single area but rather affects the surrounding sections. Hence, it is not a valid answer.

Based on the analysis, the three infection methods that affect a single area in the file are Prepending Infection, Appending Infection, and Overwriting Infection.