Big Idea 4 Flashcards
Computing System
when various types of computing devices work together for a use
Network
when at least two devices are connected and can send and receive data
Paths
connections between devices
Routers
computing devices along a path that send the information along to the next stop on the path
Internet
a network of networks
Data Streams
information transmitted via the internet.
How data is sent through the internet
the information is broken into somewhat equally sized packets, each with its attached destination and where it will be placed. the packets are sent to the destination in different routes (looks for the fastest rout). the packets arrive out of order and some may be missing. the missing ones are recalled and then all the packets are assembled.
IP Address
Internet Protocol Address. when a device connects to the internet, it is given this address so that the internet knows where to route information
Protocols
set of rules for transmitting and receiving data. all companies have a common protocol that MUST be used.
TCP/IP (Transmission Control Protocol, internet protocol)
TCP creates the packets at the sending location and reassembles them at the receiving one. after the receiving of the packets or not receiving, TCP also sends and acknowledgment back to the sender. IP moves the packets through the network to their target location
UDP (user datagram protocol)
Similar to TCP/IP BUT doesn’t send a confirmation message back to the sender when the packets are receives. you will not know if all the data was received. but it is faster.
Redundancy
duplicity in the internet by providing multiple path between devices. If one point goal down, the traffic will be redirected to another path.
Fault Tolerant
Internet has many connections and paths to allow the ability to work around problems.
Abstract
we don’t know where all the internet connection are or how the paths are determines. they just work.
World Wide Web
application that runs on the internet. WWW is a collection of web pages, documents, ad files written in HTML. way to search for and share documents.