Start with non-computer protocols. What’s the protocol at a restaurant?
Patron: Open the door and enter. Wait 1. If host currently busy Restaurant (Host): please wait. I will be right with you. If host currently not present Restaurant (anyone): please wait, the host will be right with you. If wait 1 times out Patron: excuse me, we’d like a table. If host available and not busy Restaurant (Host): Hello and welcome. Wait 2. if wait 2 times out Restaurant (Host): how many are in your party?
Patron: Hello. We would like a table state number of guests.
Or think about parliamentary procedure for bringing a motion to vote and voting on it.
These are protocols. They are all around us.
Computer networking protocols are so named because they are analogous. They define how to exchange information to accomplish a specific task. For IP, it’s a protocol for routing information packets across an unknown number of computers to a destination computer. For TCP, it’s a protocol for how a computer should send information packets and how a computer who is receiving those packets should acknowledge them.
Start with non-computer protocols. What’s the protocol at a restaurant?
Patron: Open the door and enter. Wait 1.
If host currently busy Restaurant (Host): please wait. I will be right with you.
If host currently not present Restaurant (anyone): please wait, the host will be right with you.
If wait 1 times out Patron: excuse me, we’d like a table.
If host available and not busy Restaurant (Host): Hello and welcome. Wait 2.
if wait 2 times out Restaurant (Host): how many are in your party?
Patron: Hello. We would like a table state number of guests.
Or think about parliamentary procedure for bringing a motion to vote and voting on it.
These are protocols. They are all around us.
Computer networking protocols are so named because they are analogous. They define how to exchange information to accomplish a specific task. For IP, it’s a protocol for routing information packets across an unknown number of computers to a destination computer. For TCP, it’s a protocol for how a computer should send information packets and how a computer who is receiving those packets should acknowledge them.