Q3. Shally, an incident handler, is working for a company named Texas Pvt. Ltd. based in Florid a. She was asked to work on an incident response plan. As part of the plan, she decided to enhance and improve the security infrastructure of the enterprise. She has incorporated a security strategy that allows security professionals to use several protection layers throughout their information system. Due to multiple layer protection, this security strategy assists in preventing direct attacks against the organization's information system as a break in one layer only leads the attacker to the next layer. Identify the security strategy Shally has incorporated in the incident response plan.