Which statement $($or statements$)$ about ports and the Internet is$/$are not correct? $($Choose all that apply.$)$Which statement $($or statements$)$ about ports and the Internet is$/$are not correct? $($Choose all that apply.$)$

Question $37$ Answer

a$.$

Using port numbers as part of addressing and routing was necessary during the early days of the Internet, largely because of the small size of the address field, but IPv$6$ makes most port usage obsolete.

b$.$

Standard ports are defined for a number of protocols, and these ports allow sender and receiver to establish connectivity for specific services.

c$.$

Standardized port assignments cannot be changed or things won$$t work right, but they can be mapped to other port numbers by the protocol stacks on the sender$$s and recipient$$s systems.

d$.$

Many modern devices, such as those using Android, cannot support ports, and so apps have to be redesigned to use alternate service connection strategies.