Update faq.md (#168)

* Update faq.md

Co-authored-by: Jeff Kala <48843785+jeffkala@users.noreply.github.com>
Co-authored-by: Stephen Kiely <stephenkiely87@gmail.com>

changes/168.documentation

@@ -0,0 +1 @@
+Documentation for the Connectivity Check in the FAQ.

docs/user/faq.md

@@ -85,4 +85,14 @@ PLUGINS_CONFIG = {
 }
 ```
 
-Once again, the wrong indentation will not work. This leads to errors one would not expect.
+Once again, the wrong indentation will not work. This leads to errors one would not expect.
+
+_How can I set the TCP Port that is used in the connectivity check?_
+
+Nornir-Nautobot provides the ability to check the connectivity first via TCP, this port is set per OS driver and is generally port 22. However, you can adjust this yourself, and is partially described in the [nornir-nautobot docs](https://docs.nautobot.com/projects/nornir-nautobot/en/latest/task/task/#check-connectivity-configuration).
+
+The docs indicate that there is 3 choices for check connectivity will send attempt to tcp ping the port based on the following order or precedence from most to least preferred.
+
+- If there is a [Custom Field](https://docs.nautobot.com/projects/core/en/stable/user-guide/feature-guides/custom-fields/) called `tcp_port` that is an integer, prefer that.
+- Next check if there is a [Config Context](https://docs.nautobot.com/projects/core/en/stable/user-guide/core-data-model/extras/configcontext/) key called `tcp_port` and if it is a valid integer, prefer that.
+- Finally, there is default for each driver, which is generally port 22 which it will be defaulted to.