For the length: Shielded.
For permanent installation: Solid.
For semi-permanent: Stranded.
Usually what you want to do is run 1 long single run to a nearby switch, or wall outlet.
From the nearby switch you hook up your multiple short runs with short jumpers (1-10') which are usually unshielded, and stranded.
Ethernet uses balanced, high CMR rejection, ground isolated receivers and transmitters, so unshielded is the normal short-hop cable.
For permanent installation: Solid.
For semi-permanent: Stranded.
Usually what you want to do is run 1 long single run to a nearby switch, or wall outlet.
From the nearby switch you hook up your multiple short runs with short jumpers (1-10') which are usually unshielded, and stranded.
Ethernet uses balanced, high CMR rejection, ground isolated receivers and transmitters, so unshielded is the normal short-hop cable.