network Flashcards
what is network
network makes it possible for computers, services, and other devices to communicate
what does network include
design and construction
what are some uses of network
management, maintenance, operation
from what period has networking evolved from
the 1980s
what is NOD
anything that can receive,create, store, or send data along a network/ is a shared medium from transporting data along a network
how do NODs and medium translate in real life
NODs would be the people and the medium would be the language spoken
how can networking contribute to businesses
it can help share resources, use or sell services, and communicate
what do wired and wireless networks have in common
both require physical infrastructure/like switches, routers, and access points
what standard protacals do networks rely on
HTTP, TCP/IP, VDP/IP
what is a modem
brings internet to homes and businesses/ maintains connection with internet service providers to hive you access to the internet
why do you need a modem
because your computer only reads digital signals and the modem translates them to analog so it can be read in the internet
what does it mean when a modem demodulates analog signals
it turns the analog signals from the internet in to digital signals that your computer can read
what does it mean when your modem modulates digital signals
it turns the digital signals into analog signals so the internet can read them
what is a router
what routes your internet connection to all the devices in your home/ businesses so that all of them can use the internet/ come after the modem
what do smaller routers usually have built in
has a built in switch with multiple ports to connect devices by their Ethernet cable to the internet /functions as a wireless access point so that wireless devices can connect
do you need a router if you only have one device connected
no you don’t/ you can plug the devices network cable for direct access
what are the most common types of modems
cable and DSL
what does the internet use determine what
it determines the modem you use
cable modems
are connected to your home using coaxial cables/ cable is provided by the same people who provide cable television like comcast
what is comcast
the biggest company to provide cable
DSL modems
connected using telephone line/provided by companies like ATNT
what is ATNT
the biggest DSL provider
what is a 4 port integrated switch
a switch that allows 4 computers to connect
what is the only reason to add another switch
to connect more wired devices
what is the hub
connects all devices in an internal net work/ a device with multiple ports and supports Ethernet cable/ not intelligent because the only thing a hub knows is when devices are connected to it
why do people not like to use hubs
because even if you are trying to send a message to one device connected to the hub it sends it to all connected devices.
are switches and hub similar
yes
define a switch
has multiple ports, supports Ethernet cable, is intelligent because it can read the IP addresses or mac addresses of certain computer and store it in it’s table
what are hubs and switches used for
they are use to exchange data within the local network
what do you need to exchange data out of local networks
you need a router
what is the gateway of a net work
a router
what happens when network does not have same IP address as private net work
the router rejects it
