Which activity is a customer responsibility in the AWS Cloud according to the AWS shared responsibility model?

Explanations:

Ensuring network connectivity from AWS to the internet is part of AWS’s responsibility to maintain the infrastructure, but customers must configure their resources to connect properly. However, AWS provides the underlying network infrastructure.

Patching and fixing flaws within the AWS Cloud infrastructure is an AWS responsibility. AWS is responsible for the security and maintenance of the cloud infrastructure, including the hardware and software that supports services.

Ensuring the physical security of cloud data centers is also an AWS responsibility. AWS manages the physical security measures necessary to protect its data centers.

Ensuring Amazon EBS volumes are backed up is a customer responsibility. Customers must manage their data, including backup and recovery processes, as they control the content and can implement backup strategies according to their needs.