Exam OG0-023 topic 2 question 7 discussion

Scenario -
Please read this scenario prior to answering the question
The ArchiSurance enterprise document management infrastructure provides critical support for myriad types of documents and document-based transactions, many of which are executed in high volume each day. At the core of the infrastructure is the document management systems software, which has three major modules: a document engine that stores, retrieves and performs a variety of operations on documents, a workflow engine that hosts document management applications, and an application engine, which hosts the most sophisticated applications. The application engine invokes the document and workflow engines as necessary when hosting application components that require their services.
The claim management application component is critical to ArchiSurance business operations. It is hosted by the application engine, and launches whenever an individual files a new claim. The claim management component requires different documents to demonstrate proof of loss depending on the type of claim filed, the type of insurance that is in force, and various other circumstances. When the correct documents are filed and verified by an intake operator, proof of loss is complete, and the claim management component assigns the claim to a claim analyst by reading and updating analyst status data and applying business rules stored as data.
Due to its business-critical nature, the document management solution is hosted redundantly at two geographically separate data center sites known as Site A and
Site B. Both sites provide identical infrastructure. Each site contains a highly available data center network (DCN) that is connected to the highly available
ArchiSurance wide area network (WAN). Each claim management server is connected to its site DCN, and each DCN is a converged network that connects both servers and storage arrays, including a physical storage array dedicated to the claim management application. Each site contains four high-powered separate physical servers dedicated to the claim management application. At any one time, one server is on standby while the other three servers are, respectively, hosting the document, workflow and application engines. Each active server provides a monitoring service that is In constant two-way communication with the monitoring service on the standby server. If a server fails, the surviving monitoring services perform a failover sequence to assume failed server's workload if it was active.
The surviving monitoring services also alert the operation team on duty.
Refer to the Scenario -
A new IT manager has asked you to model the applications and system software elements involved in document management, including the services they provide, the data objects they handle, and how they work together.
Which answer best models this information?