3.OSI

physical

layer 1 of the OSI model that involves hardware and components and uses electric signals to send binary.

data link

layer 2 of the OSI model involving addressing and formatting data from the network layer.

binary

data type composed of 1s and 0s

Network Interface Card

component found on all network-enabled devices that come with their own MAC address to identify it on a network

presenting data in manner that’s transferable

The data link layer is responsible for _

network layer

layer 3 of the OSI model where the routing and re-assembly of data occurs

shortest path with least devices to destination, most reliable path based on past experiences, speed of physical connection.

three things considered during the routing process

layer 3 devices

devices that function in the network layer

IP addresses and routers

two things that work in the network layer.

transport

layer 4 of the OSI model responsible for how data is sent and received

transmission control protocol

protocol that maintains a connection between devices until the data has reached its destination

guarantees integrity, prevents data overload, and performing a lot reliably

three advantages of transmission control protocol

requires stable connection and slower than UDP

two disadvantages of the transmission control protocol

photo of cat is broken down during transport and reassembled correctly before reaching its destination.

example of TCP involving a photo of a cat

user datagram protocol

protocol that sends data to another device but doesn’t guarantee it will get their.

Faster than TCP, a continuous connection is not needed, and it determines transfer speed.

three advantages of user diagram protocol

doesn’t guarantee data integrity and unreliable with unstable connections

two disadvantages of user datagram protocol

a photo of a cat is sent but only part of the photo is received

example of UDP involving a cat

session

layer 5 of the OSI model where a connection or session is established and managed between devices.

session layer

what layer of the OSI model closes a connection if the connection is lost?

checkpoint

created by the session layer to only send the missing packets after a connection is lost during data transfer.

presentation

layer 6 of the OSI model that manages the standardization of data between different systems

presentation

What layer of the OSI model is responsible for maintaining integrity when an email is sent from one email client to another?

application

layer 7 of the OSI model dealing with how users interact with data.

graphical user interface and domain name system

two things the application layer deals with

graphical user interface

allows users to interact with data

Domain name system

process were web pages are translated into IP addresses

open systems interconnection, network interface card, transmission control protocol, user datagram protocol, graphical user interface, and domain name system

what do OSI, NIC, TCP, UDP, GUI, and DNS stand for

physical, data link, network, transport, session, presentation, application

7 layers of the OSI model in order? (please do not throw the sausage pizza away)