Finals Flashcards
Define topology in networking terms.
the layout/arrangement of nodes and communications media within a network
Name four common networking topologies.
bus, star, mesh, and ring
In bus topology, _____ are placed at the ends of the cables. Why?
terminators; they prevent data from mirroring back through the wires
Describe a bus topology.
a cable is run in a line with devices connected along the way
A _____ topology is the most basic. It is outdated so many people _____ use it now. This is because…
bus; don’t; mirroring can cause confusion and if a line breaks, a device is completely cut off.
If a connection breaks in ring topology, what will the data do?
switch directions
The _____ is the most common topology.
star
Describe a mesh topology.
is made of multiple lines connecting through each device/node
Why is a mesh topology so reliable?
it has so many lines of back-up if a line breaks
The internet is a _____ topology. The wires under the sea, however, USE to be a _____ topology.
mesh; ring
Anything connected either directly or indirectly to the _____ has an IP address.
internet
What’s the order of wire colors for an internet cable?
orange-white, orange, green-white, blue, blue-white, green, brown-white, brown
Why do you twist wires in cables?
to reduce the “noise” between them so more dat packets don’t have to be requested
A _____ is the first device that the internet hits when it’s being brought into a household or area when not wireless.
modem
What’s an RJ-45?
the connector piece at the end of an internet cord
What is a hub and what does it do?
it’s a basic device that splits your signal; one signal comes in, multiple go out; they don’t regulate traffic
What is a switch and what does it do?
it’s a device that are like hubs but with more regulations; the data uses a ‘four-way stop’ to regulate
Are some hubs or some switches programmable?
switches
_____ are like midway stations for the internet.
routers
When _____ _____ go through routers, they are tracked.
data packets
Why are hubs, switches, and routers related to each other?
they all direct or regulate traffic and have cords connecting to them
What is a computer network?
a bunch of computers connected to each other
What does a network allow for between different devices?
communication or transmission of data
Give three examples of data.
documents, pictures, videos, etc