A00-251 Administering SAS Viya 3.5 Questions and Answers

Authentication domains are used to store the passwords required to access an external data source, such as a database or a file system. These authentication domains also record the identities of users who are allowed to use the credentials stored in the authentication domain. This allows the CAS server to ensure that only authorized users can access the data source.

According to the official SAS Viya 3.5 documentation, the deploy-casworker yml playbook should be used to add a CAS worker to an MPP environment and apply the latest hotfixes at the same time. You can find this information in the SAS Viya 3.5 Administering Guide page 38.

SAS Environment Manager is a web-based tool that allows you to manage and monitor the SAS Viya environment. It provides a centralized view of the SAS Viya deployment, including the configuration server, compute nodes, and other services. This tool can be used to manage and monitor logging for the SAS Configuration Server and other critical components of the SAS Viya environment.

When a table is loaded in a distributed (MPP) CAS server, the controller distributes the rows of the table to the worker nodes. This allows for parallel processing of the data, which can improve performance. The controller also ensures that a redundant copy of the rows is available for fault tolerance. This means that if a worker node fails, the data can still be accessed from another worker node.

According to the SAS Documentation for the MPP Loader procedure, the default behavior is that the controller distributes the rows to the worker nodes and ensures a redundant copy of the rows is available for fault tolerance. This is stated in the documentation as follows: "By default, the MPP Loader procedure distributes the table rows among the worker nodes and ensures that two copies of the rows exist. This provides fault tolerance should one of the worker nodes fail."

According to the official SAS Viya 3.5 documentation, SAS Studio Basic is the only SAS Viya application that is hosted by the embedded web application server. You can find this information in the SAS Viya 3.5 Administering Guide page 13.

User groups cannot be promoted to SAS Viya when promoting content from SAS 9. This is because SAS Viya uses a different authentication model than SAS 9 and so user groups need to be manually recreated in Viya. As for the other types of SAS 9 content, OLAP cubes, folders, and data libraries and tables can all be promoted to SAS Viya.