Explanation

According to the AWS Shared Responsibility Model:

• AWS Responsibility (Security OF the Cloud): AWS is responsible for protecting the infrastructure that runs all services offered in the AWS Cloud, including:

  • Host operating system
  • Virtualization layer
  • Physical security of facilities
  • Network infrastructure
  • Hardware infrastructure

• Customer Responsibility (Security IN the Cloud): The customer is responsible for:

  • Managing IAM users and permissions
  • Managing database schemas and data
  • Configuring security groups and network access controls
  • Managing application-level security

Why Option C is correct:

• Patching the host operating system's software is AWS's responsibility in Amazon RDS
• AWS manages the underlying infrastructure, including OS patching and maintenance

Why other options are incorrect:

• Option A: Configuring IAM users is the customer's responsibility
• Option B: Managing database schemas is the customer's responsibility
• Option D: Configuring security groups for database connections is the customer's responsibility

This division of responsibilities allows customers to focus on their applications and data while AWS manages the underlying infrastructure security.