1. HCL BigFix 10.0 Documentation
Installation Guide
"Server Components":
FillDB: "The FillDB service reads the client reports from the buffer directory on the BigFix server and stores them in the database. The FillDB service runs on the BigFix server." This directly supports the correct answer.
Root Server: "The Root Server service...receives reports from the clients and writes them to a buffer directory on the BigFix server." This confirms why option C is incorrect.
GatherDB: "The GatherDB service reads the information from the BigFix sites and stores it in the database." This confirms why option D is incorrect.
(Reference: HCL BigFix 10.0 Documentation > Installing > Server Installation > Server Components)
2. HCL BigFix 10.0 Documentation
Platform Overview
"BigFix Architecture": The architectural diagrams and descriptions illustrate the data flow where the Root Server (Gatherer) collects reports and FillDB processes them into the database
reinforcing the distinct roles of each service.
(Reference: HCL BigFix 10.0 Documentation > Overview and Architecture > BigFix Architecture)