Which of the following default ports would need to be opened on the firewall?

An administrator needs to open ports in the firewall for both DNS and eDNS. Which of the
following default ports would need to be opened on the firewall? (Select TWO).

A.
TCP 23

B.
TCP 53

C.
TCP 123

D.
UDP 23

E.
UDP 53

F.
UDP 123