It is the customer who is ultimately responsible for any type of data loss or breaches

This is a tricky question.
When using a Database as a Service, the provider manages fundamental security, patching, and core configuration, while the cloud user is responsible for everything else, including which security features of the database to use, managing accounts, or even authentication methods.
Ref: CSA Security Guidelines v4.0

Software Defined Networking(SDN):A more complete abstraction layer on top of networking hardware, SDNs decouple the network control plane from the data. This allows us to abstract networking from the traditional limitations of a LAN.
Reference: CSA Security GuidelinesV.4(reproduced here for the educational purpose)

Vendor lock-in is a situation in which a customer using a product or service cannot easily transition to a competitor's product or service. Vendor lock-in is usually the result of proprietary technologies that are incompatible with those of competitors.

The question is asking for an exception by using "NOT"
The building blocks of cloud computing are composed of random access memory (RAM), the central processing unit(CPU), storage, and networking.