Explanation
AD: After custom objects are deployed, new workspace types are made available for objects that have the Object is Available in Workspaces, Scripting, and Workflow option enabled so you can work with them in the same way you work with incidents or contacts. In addition, standard reports are automatically created for deployed objects that have this option enabled.
Because custom object data is stored in the database, you can add custom objectsto workspaces, workflows, custom reports, and navigation sets.
E: You must specify permissions for your staff members to read, delete, and perform other actions on custom object records.
References:
Oracle Service Cloud User Guide, Release February2017, page 92

Explanation
The thesaurus.txt file contains a list of words and their synonyms used in the Similar Phrases search technique on theAnswers page. Words in the text search are matched with synonyms to extend the searching capability to include ontologies.

Explanation
Dashboards are created and edited on the dashboard design center by dragging reports to the dashboard, adding optional descriptions, images, text, and controls, and configuring display options.
If you do not want to create a new dashboard, you can copy an existing custom or standard dashboard in the Reports explorer and then edit the copy using the dashboard design center.

Explanation
In order for answers to appear on the customer portal, the Status, Access Level, Language, Product,and Category fields must be set to a visibility that allows access by customers. If even one field does not allow visibility, the answer will not be available on the customer portal.
C: The primary factor that determines the visibility of answers is answer status. There can be many custom answer statuses, but all must be either a Public or Private status type, which is determined when the custom status is created.
F: Products and categories-The visibility settings for the products and categoriesassociated with the answer will also affect the visibility. If the answer is assigned to a product or category that is not visible to customers on a particular interface, the answer will also not be visible to customers, unless it is assigned to another product or category that is visible on the interface. In other words, if you have an answer that is assigned to two products, and one of the products is not visible on the interface, but the other product is, your answer will appear on the interface. However, if the answer is assigned to two products, and neither product is visible on the interface, your answer will not appear on the interface under any circumstances.
References:
https://docs.oracle.com/cloud/november2016/servicecs_gs/FAABU/_BUIGuide-9.htm