3. Matthew captures traffic on his network and notices connections using ports 20, 22, 23, and 80. Which port normally hosts a protocol that uses secure, encrypted connections?

Port 22

Explanation:

The Secure Sockets Layer (SSL) is a session-connection layer protocol that is responsible for data authentication and encryption for internet connections

The default SSH port for is Port 22..

The port 22 is used by SSH to activate encryption of data that is communicated via a public network connection( the public network connection could be a global network, a local network, the internet or internet access, ), hence, VPN functionality is provided.

its either   1 , 21, 6,10, 21 ,36 depending on the answer choices you have.