Which requirements must be satisfied to discover SQL Server?

To successfully discover SQL Server, it is essential to have the Remote Registry Service enabled and to be using PowerShell version 2. The Remote Registry Service allows remote access to the registry of the SQL Server machine, which is crucial for reading configuration settings and other vital information necessary for the discovery process.

PowerShell version 2 is necessary because certain querying and scripting functions used during discovery depend on this version of PowerShell. It provides a compatible environment for executing the scripts that interact with SQL Server to gather required data effectively.

Other options do not fully address the requirements needed for SQL Server discovery. Just having SQL Server installed or enabling debugging does not ensure that the necessary configurations and access methods are in place for proper discovery. Additionally, simply opening SQL ports does not guarantee the availability of the necessary management libraries and services needed for a complete discovery process. Therefore, having both the Remote Registry Service enabled and PowerShell v2 is pivotal for successfully discovering SQL Server instances in a network environment.