Which five parameters uniquely identify a connection

Question

Which five parameters uniquely identify a connection? 1 . Local IP, Remote IP, Local MAC, Remote MAC and Protocol 2 . Local IP, Local port, Remote MAC, Remote port and Protocol 3 . Local MAC, Local port, Remote MAO, Remote port and Protocol 4 . Local IP, Local port, Remote IP, Remote port and Protocol

Answer 1

A (point-to-point)”connection” is established when the following is known:
   - the protocol being used
   - local port number
   - local IP address
   - remote IP address
   - remote port number

Note that this could look like:
  protocol: TCP, IP address: 128.61.191.2:80, port number: 80 with IP address 128:61.184.10, port number: 80,
Written as:
  TCP, 128.61.191.2:80 with 128.61.184.10:80
       (port 80 is most often used for HTTP traffic)