Universal Containers (UC) wants to reduce the amount of redundant leads entered into the system. UC.. only edited/reassigned by the lead owner.
What organization-wide default (OWD) approach should be recommended to help UC implement these ..

A Visualforce controller has a requirement to be written with "Without Sharing" at the top level; however, certain methods within the page still need to enforce the user permissions for creating records and accessing certain fields. Which two methods below would be used to enforce this requirements?
Choose 2 answers.

If OWD is Public Read Only, what are sharing access options

In order to comply with regulatory requirements, Universal Health must encrypt all Personally Identifiable Information (PII), both while it is being transmitted over the network and while it is at rest. Universal Health has completed a data audit and has determined that 12 fields on the contact record can contain PII, including the contact name and several other standard fields. Universal Health would like the fields to remain accessible in Salesforce. Which two options does Universal Health have to maintain compliance?
Choose 2 answers.

Sales managers want their team members to help each other close Opportunities. The Opportunity and Account organization-wide defaults are private. To grant Opportunity access to sales reps on the same team, owner ship-based sharing rules were created for each team.
What is the side effect of this approach?