What are protocols?
agreement between two computers that specifies how the computers will work together; agree on how they will request, format, and task including error codes
What is the difference between protocols and programs?
A protocol is an agreement while a program carries the instructions but understands the protocols.
What are the 4 internet layered protocols?
- Physical Layer: defines how computers in the network are connected, deals with 0s and 1s
- Network Layer: transmits data across the internet in packets (ex: IP)
- Transport Layer: connects computers together (ex: TCP)
- Application Layer: defines control and data transfer aka protocols (ex: HTTP)
What is internet protocol (IP)?
the effort to get information from one point in the network to another, defines IP addresses and uses IP packets
What is the Transmission Control Protocol (TCP)?
sends and breaks down data, usually numbered and sorted
What is Hypertext Transport Protocol (HTTP)?
agreement between multiple computer how web clients/servers, request to web server, server will respond by sending data
