Layer
Click on the red underlined text to get to the source
... Since it is foreseen that the number of transport protocols supported
by a particular application layer protocol is not going to grow
dramatically, having a DNS entry per transport ...
... However, sometimes it is necessary to include new layers between the
transport protocol and the application layer protocol. Examples of
these layers are transport layer security and compression ...
... transport protocol and the application layer protocol. Examples of
these layers are transport layer security and compression. If DNS
...
... It is clear that this way of using DNS is not scalable. Therefore,
an application layer mechanism to express support of signalling
compression is needed.
...
