How does SAP HANA use the remote data sync to communicate with Internet of Things (loT) devices? There are 2 correct answers to this question

How does SAP HANA use the remote data sync to communicate with Internet of Things (loT) devices? There are 2 correct answers to this question
A . Devices CANNOT collect data locally
B . Remote data sync is bi-directional
C . Remote data sync requires block chain technology
D . Devices can be occasionally connected with SAP HANA

Answer: B,D