Which two requirements should the Salesforce Community Cloud support for self-registration and SSO?
Choose 2 answers

Universal Containers has a trigger on the Order object to update the parent Acount with the date and time of the last closed Opportunity. An integration that inserts orders for the high-volume customers is failing periodically, with no obvious pattern to the timing of failures.
What could be the cause of this issue ?

An Integration Architect has designed a mobile application for Salesforce users to get data while on the road using a custom UI. The application is secured with oAuth and is currently functioning well. There is a new requirement where the mobile application needs to obtain the GPS coordinates and store it on a custom geolocation field.
The geolocation field is secured with Field Level Security, so users can view the value without changing it.
What should be done to meet the requirement?

What is the recommended approach to implement a login authentication call for an inbound integration call to Salesforce?

Universal learning (UC) is embarked on Salesforce transformation journey, UC will decommission the legacy CRM system and migrate data to Salesforce. The data migration team asked for a recommendation to optimize the performance of the data load to Salesforce.
Which approach should used to meet the requirement?