Physical servers and storage hardware and Data center network equipment such as routers and switches are correct because they represent on premises capital and facility items that will be removed when workloads run on AWS.

Physical servers and storage hardware are replaced by provider managed compute and storage so you no longer buy or refresh racks of gear or pay for the associated facility footprint.

Data center network equipment such as routers and switches is removed because AWS supplies the networking fabric and you will not need to purchase maintain or support those physical network devices in your data center anymore.

Operating system administration labor is not an avoided cost because many systems still need OS level operations patching and configuration in the cloud and that labor commonly continues or shifts to cloud operations roles.

AWS Direct Connect is not an on premises expense to eliminate because it is an AWS connectivity service and may become a new recurring cost rather than a removed data center cost.

Database schema and data model design work is not eliminated because application and data design effort continues during and after migration and may increase for modernization activities.

Full AWS Practitioner Certification Question