Ask-a-Dave's-Gardener: Can I plant the top of an overgrown small tree?, 2 by ErikinAlameda

ErikinAlameda wrote:
As will be obvious very soon, I am a complete rookie. I have a tree that is doing wonderfully on the side of my house. It has grown a bit too tall. My first question is whether I can cut the top off without killing it. And if I do (maybe the top 1/4) can I plant the part I cut off?

I am not sure what kind of tree it is, but I have attached a few pictures. Thanks in advance for the guidance!