Mine selects a column for ctrl+space. It must be some application optional setting that does that.
Some people like both for a bullseye. Right click the sheet's tab, View Code, and paste.
Code:
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Application.EnableEvents = False
Union(Columns(Target.Column).EntireColumn, _
Rows(Target.Row).EntireRow).Select
Target.Activate
Application.EnableEvents = True
End Sub