The architect has a requirement to create a criteria-based sharing rule based on the customer Social Security number. However, when setting up the rule in Contact Sharing, the field is not shown on the list of available fields.
What might cause this?

Every day, Ursa Major Solar uploads a large number of parent and child records into Salesforce to maintain integrations with other systems that update their data in scheduled batches or continuously in real time. Ursa Major Solar is concerned about locking errors.
Which two situations may introduce locking errors for Ursa Major Solar? (Choose two.)

After setting up Customer Community and enable collaboration, the architect realizes that customers are only Chatter posts from other customers in their account.
What should the architect do to allow viewing chatter posts from all customers?

Universal Containers provides 24x7 support for its customers worldwide using call centers in three different countries with each one covering an 8-hour shift in different time zones. Service reps in a call center have access to the same information but only during their local working hours.
Which feature in Salesforce controls access for specific login hours?

User A at Universal Containers is in the default account team for User B.
User B owns the ACME account and changed User A's team member access to the account.
What is the impact of this change?