S12 - Internet Connections Flashcards
function of Internet Service Provider (ISP)
Establishes high speed links between their network and clients
Function of ONT (Optical network terminal)
Converts optical signal from fibre connection that can be routed onto a router using copper wire cables
Define Plan Old Telephone Service (POTS)
Runs as a dial up connection and is used on the public switched telephone network (PSTN)
Define legacy system
old system that is still used in some critical functions
Define integrated services digital network (ISDN)
old Standard for connecting digital data and services with telephone lines
3 types of DSL
ADSL, SDSL, VDSL
Define Asymmetric DSL (ADSL)
has different speeds of download and upload
Define Symmetric DSL (SDSL)
Has equal speeds of download and upload
Define Very High Bit-Rate DSL (VDSL)
High speeds of download and upload. Download 50Mbps or more Upload 10Mbps or more
Define Cable Modems
Uses a cable TV network that is made up a hybrid fiber-coaxial (HFC) distribution network
Define Data-Over-Cable service interface specifications (DOCSIS)
Protocol used by modems which can allow the modem to understand how the network is running in terms of layout, can specifical channel size and frequencies for Digital Cable tv
Define Fibre to the curb (FTTC)
Runs a fibre optic cable from an internet provider access point to a telephone cabinet in your area. Copper wires are then used to connect to your home
Define Fiber to the premises (FTTP)
Fiber optic that connects directly to a building and connects to an optical network terminal (ONT)
Function of ONT
Physical devices that convert optical signals to electronic signals that the modem can understand
The G in cellular version refers
to the generation of cellular technology
