Are you planing on installing the cabling and terminating the jacks yourself?
In most cases UTP , unshielded twisted pair is used.
Conductors are solid core.
* Avoid installing 4 pair cabling parallel within 24" to AC power cabling or light fixtures.
* Avoid sharp bends in the the data cable.
* Avoid sharp kinks in the data cable. Even straightening out a kinked data cable will not repair the damage done to the geometry lay of the 4 twisted pairs of the cable.
* Avoid walking on the cabling during the installation of the data cable. Same reason as above.
* Avoid small diameter coiling of excess data cable at either end of the finish installed terminated product.
* When terminating the 4 pairs on a jack or plug maintain the twist of the pairs.
If you use Cat 6, 4 pair UTP data cable then the ends must also be cat 6. If you install Cat 6 cable and terminate on Cat 5 ends you end up with Cat 5. Same with patch cords used. All must be Cat 6 from end to end. Patch cord > jack > horizontal cabling > Jack/patch panel > patch cord to router or switch.
* You will want to wire the ends using the 568b wiring standard.https://www.utm.edu/staff/leeb/568/568.htm
* Not all data cable manufactures are created equal. Same goes for the data jacks.
Testing the finished product? About the only test you can perform is a wire map test continuity test. And then check if the cable works satisfactorily or it doesn’t.
If you are only needing three data cables and don’t care if you have a wall jack/plate or not, you might want to consider buying made to order data cables with plugs installed on each end from Blue Jeans cable company. https://www.bluejeanscable.com/store/data-cables/
If you choose this type of cabling, care needs to be taken to protect the plug ends during installation from being damaged.