Ensuring that WDCs are securely accessing data sources and handling data transfer securely and efficiently When configuring web data connectors on Tableau Server, it is essential to ensure that these connectors access data sources securely and handle data transfer efficiently. This involves verifying the security of the data source connections and ensuring that data handling by the WDCs adheres to best practices for data security and integrity. Option A is incorrect because it is not necessary for all WDCs to be hosted on the same server as Tableau Server. Option B is incorrect as updating WDCs without proper testing and compatibility checks can lead to issues with data accuracy or security. Option D is incorrect because while internal connectors may offer certain security assurances, prohibiting all third-party connectors can unnecessarily limit functionality and innovation.