Which PowerShell cmdlet can inspect internal variables and environment variables?

• A. Get-Variable
• B. Get-ChildItem
• C. Get-Alias
• D. Set-Variable

Answer: (B)

PowerShell uses providers to expose different data stores, and Get-ChildItem is the flexible enumerator for any provider. Environment variables are exposed under the Env: provider, while internal PowerShell variables live under the Variable: provider. Using Get-ChildItem on those paths lets you inspect both types: Get-ChildItem Env: lists environment variables, and Get-ChildItem Variable:\ lists internal PowerShell variables. This single cmdlet therefore can reveal both sets of data. By comparison, Get-Variable shows only PowerShell variables, Get-Alias lists aliases, and Set-Variable assigns a value rather than listing variables.