I have a question regarding this question in the CKA Networking - Exploring Envi . . .

Talal Humaidi:
I have a question regarding this question in the CKA Networking - Exploring Environment practice test :
The question is “What is the port the kube-scheduler is listening on in the master node?”
when i run

controlplane $ netstat -natpul | grep -i sch

i get this output

tcp        0      0 127.0.0.1:10259         0.0.0.0:*               LISTEN      2519/kube-scheduler 
tcp        0      0 172.17.0.34:54836       172.17.0.34:6443        ESTABLISHED 2519/kube-scheduler 
tcp        0      0 172.17.0.34:55036       172.17.0.34:6443        ESTABLISHED 2519/kube-scheduler 
tcp6       0      0 :::10251                :::*                    LISTEN      2519/kube-scheduler 

why is the correct answer is 10251 now i can see that there is 2 listens here! more specific is the 127.0.0.1:10259 because we route the traffic from 10251 in the master node to 10259 or is there any other reason ?
thanks in advance

Mohamed Ayman:

Fernando Jordan Silva:
Kube-scheduler uses 2 ports: 10251 for insecure communications (deprecated) & 10259 for secure comms

Fernando Jordan Silva:
by default, all the communications are not securized, so the “main port” is 10251

Talal Humaidi:
thanks

Talal Humaidi:
@Mohamed Ayman nothing changed in the result there is two ports in your result