Please clarify "node handles" - do you mean the symbols of the nodes themselves or the handles of curved segments?
The handles can be turned on/off with 'Ctrl+H':
see Bug #324208 “Adding shortcut for 'Show the Bezier handles of selected nodes'”:
To show/hide the nodes themselves:
duplicate of or related to Bug #338441 “Hide/show nodes shortcut”?
Please clarify "node handles" - do you mean the symbols of the nodes themselves or the handles of curved segments?
The handles can be turned on/off with 'Ctrl+H':
see Bug #324208 “Adding shortcut for 'Show the Bezier handles of selected nodes'”:
To show/hide the nodes themselves:
duplicate of or related to Bug #338441 “Hide/show nodes shortcut”?