Networking Flashcards
two or more computers connected together so they can share resources
network
connect machines on the same network
hubs, bridges, switch
connect multiple networks together
routers
3 switching techniques
circuit switching, message switching, packet switching
establish a connection, reserve this line for the entire duration for speed and consistency, but wastes resources; ex: phone calls
circuit switching
hop around and move the entire message temporarily to intermediate nodes; does not reserve resources but requires more storage
message switching
break the data into smaller packets; each packet takes a different route to the destination; resembled once they arrive; ex: the Internet
packet switching
4 network topologies
star; bus; ring; mesh
all computers are connected to a switch at the centre
star topology
all computers are branching off from a central “bus” cable closed with terminators
bus topology
all computers are connected in a closed loop
ring topology
all computers are connected in a closed loop
ring topology
every device is connected to every other device
mesh topology
4 network geographic scales
NFC; PAN; LAN; WAN
used in mobile payment systems like apple or google pay
network geographic scales
near-field communication (NFC)
used to connect personal devices and peripherals using Bluetooth
personal area network (PAN)
used within a small building or a single floor of a building
local area network (LAN)
spans multiple regions or countries; usually means the Internet
Network geographic scales
wide area network (WAN)
4 levels of the internet protocol suite (TCP/IP)
application; transport; internet; network interface
ways for applications to communicate with each other; like how your web browser and web server communicate through HTTP (Hypertext Transfer Protocol)
application layer
sets up and manages the connection; breaks up the data into packets/reassembles packets through TCP (transmission control protocol)
Internet protocol suite layer
transport layer
routes the packet through the network using IP (internet protocol) and examining the IP address
internet protocol suite layers
internet layer
physically moves bits through the connection medium
network interface layer
is a network of networks that are connected together
internet
a service available through the internet; a collection of interconnected documents and resources linked by hyperlinks
the web
the unique address of a webpage
URL (uniform resource locator)
english-like name of the URL
domain name
converts the domain name into an IP address
domain name system
