To prevent a user from logging into the Salesforce org outside normal business hours, the System Administrator would do this in:

When a field is deleted from the pagelayout, does it is also deleted from the Object?

When using advanced currency management, can a past exchange rate be changes?

All of the following may be used when updating a record using the AppExchange Data Loader EXCEPT:

User A modifies a record. This modification triggers a workflow rule for immediate execution that includes a field update on the current record. After the execution is complete, what user will be listed under the Last Modified field of this record?