When styling a road network where all sections of the network between junctions are separate paths, I style the ends of the lines to rounded to remove any gaps that might appear where the joins are at angles. The only problem is that you then have rounded ends to cul-de-sacs or dead end side roads.
ArcGIS has a tool that allows you to specify the end caps to either square or butt, which removes the rounded ends.
Is there a method of doing this in QGIS?