Theory - Networks Flashcards
Ethernet
SET of protocols for wired networks
A structure that organises communication protocols into layers
TCP/IP Model
Protocol
An agreed standard that defines how devices should communicate
Network protocols are the set of rules that govern how communication takes place between devices on a network
Way of altering data so that it can only be read by the intended recipient(s)
Encryption
Ensures that data is presented in a format that will be understood by the software that is using it
Application layer
Establishes connection when transferring data across the Internet by determining the communication protocols to be used
Transport layer
Determines route that data will take and adds address fields to the data
Network layer
Handles how data will be represented on the physical layer (wires)
Link layer
Network that connects devices over a small geographic area
LAN
Database which links domain names to their corresponding IP addresses
DNS server
Device used to send data between networks
Router
Component needed for a device to be able to connect to a network
NIC
Network Interface Controller
Unique number used to identify a device on the internet
IP address
Network that connects devices over a large geographical area
WAN
Computer that requests services from a server
Client
Computer that handles data and processes for other devices on a network
Server