Network Protocols

Question 1

What are protocols?

Answer 1

agreement between two computers that specifies how the computers will work together; agree on how they will request, format, and task including error codes

Question 2

What is the difference between protocols and programs?

Answer 2

A protocol is an agreement while a program carries the instructions but understands the protocols.

Question 3

What are the 4 internet layered protocols?

Answer 3

• 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)

Question 4

What is internet protocol (IP)?

Answer 4

the effort to get information from one point in the network to another, defines IP addresses and uses IP packets

Question 5

What is the Transmission Control Protocol (TCP)?

Answer 5

sends and breaks down data, usually numbered and sorted

Question 6

What is Hypertext Transport Protocol (HTTP)?

Answer 6

agreement between multiple computer how web clients/servers, request to web server, server will respond by sending data