1.5 topologies Flashcards
topology
how a network is laid out both physically and logical.
mesh network
each device is connected to each other through a dedicated line so that if one fails or breaks it can go through another route to transmit the data.
/ 0---0 \ | \ / | 0 ----\/-----0 | /\ | \ | | / 0---0
ring network
each device is connected to two other devices. each packet of data on the network travels to each device until it reaches the desired location.
0 / \ 0 0 \ / 0
star network
many computers are connected to one main computer (server) that connects them all.
0 | 0------+ -------0 | 0
FTP
(file transfer protocol) protocol for transmitting data across a network.
HTTPS
(hypertext transfer protocol secure) set of rules used by browsers to decode and understand web pages. used for more sensitive information and usually uses a password.
HTTP
(hypertext transfer protocol) set of rules used by browsers to decode and understand web pages.
TCP/IP
a set of rules that all computers must follow so they can connect to the internet.
SMTP
(simple mail transfer protocol) provides the rules for sending e-mails between servers and clients.
IMAP
(internet message access protocol)the message service that holds the information but is not downloaded.
POP
(post office protocol) extracts and receives email from a remote mail server for access by the host machine.
IP addressing
an internet protocol address is a numerical label assigned to each device that is connected to a network that uses the IP for communication.
MAC addressing
(Media Access Control Addressing) an identification number that is attached to each component and device that connects to a computer network
port
endpoint of communication.
protocol
mechanisms for devices to identify and make connections with each other as well as formatting rules that specify how data is packaged into messages, sent and received.
terminator
prevents signal reflection that will stop the signal.
workstation
a computer designed for a specific purpose and usually connected to a LAN.
node
data point that is connected to a larger network.
data collisions
result of simultaneous data packet transmission between two or more network domain devices or nodes.
transmission media
a pathway that carries the information from sender to receiver.
encryption
a method of securing data b scrambling it so its unreadable. only the receiver and sender have the key to unscramble the data.
ethernet
type of internet connection that is wired from the router to your device.
WI-FI
wireless network technology that provides a high speed access to the network and internet.
layers
networking framework to implement protocols in layers, when it has passed one it will then go to the next one.
packet switching
a mode of data transmission in which a message is broken into a number of parts which are sent independently and given a specific number, over whatever route is optimum for each packet, and reassembled at the destination using their given numbers