Which two automated methods should an architect use to solve an issue with duplicate contacts?
Choose 2 answers

A company's security assessment noted vulnerabilities on the un managed packages in their Salesforce orgs, notably secrets that are easily accessible and in plain text, such as usernames, passwords, and OAuth tokens used in callouts from Salesforce.
Which two persistence mechanisms should an integration architect require to be used to ensure that secrets are protected from deliberate or inadvertent exposure?
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A subscription-based media company's system landscape forces many subscribers to maintain multiple accounts and to login more than once. An Identity and Access Management (IAM) system, which supports SAML and OpenId, was recently implemented to improve their subscriber experience through self-registration and Single Sign-On (SSO).
The IAM system must integrate with Salesforce to give new self-service customers instant access to Salesforce Community Cloud.
Which two requirements should the Salesforce Community Cloud support for self-registration and SSO?
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What should an Architect recommend to ensure all integrations to the Northern Trail Outfitters company portal use SSL mutual authentication?

Universal Containers is replacing a home-grown CRM system. Currently, a .Net application runs a batch process to query the CRM system nightly and create a CSV file that is picked up via SFTP and loaded to a SQL database.
What technology should an architect use to minimize custom development when replacing the CRM system with Salesforce?