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Chap 3- Network Compooting

Pearson_IT
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Terms in this set (36)

network
two or more computers/devices (nodes) that are connected via software/hardware so that they can communicate with one another
name a couple examples of nodes (devices)
peripherals (printer)
Network navigation/connection- (router, modem)
distance between nodes: personal area network (PAN)
communication between devices close to one person (phone, tablet, bluetooth)
distance between nodes: local area network (LAN)
nodes are located within a small geographic location
(school, restaurant, lab)
distance between nodes: home area network (HAN)
special type of LAN located in a home/residential location
distance between nodes: metropolitan area network (MAN)
large distances between nodes, usually across a city
distance between nodes: wide-area network (WAN)
spans a large physical distance. The internet is a WAN covering the globe (the internet)
twisted-pair cable
copper wires, normal land-line telephone cable
unshielded twisted-pair (UTP) cable
consists of four pairs, used for networks
coaxial cable
single copper wire surrounded by layers of plastic, used for cable tv
fiber-optic cable
made of plastic or glass
Cat 6 cable
most common cable used in home networks
wireless fidelity (wi-fi)
standard for sending/receiving radio waves
packet
grouping of data that is transmitted over the network
data transfer rate
the maximum speed at which the data can be transmitted between two nodes on the system
bandwidth
same as the data transfer rate, measured in megabits/gigbits per second
throughput
the actual speed of the transfer of data
Internet Service Provider (ISP)
access to the internet must be purchased by them, which are businesses that provide access to the internet for a fee
internet connection type: Dial-up
connection through a standard phone line
internet connection type: Mobile Broadband
connection to the internet through a mobile device using 3G or 4G
internet connection type: satellite internet
connect to the ISP satellite by using a satellite dish
internet connection type: digital subscriber line (DSL)
uses twisted-pair cables with data being split between 3 sections. Average speed 3.7 Mbps
internet connection type: cable internet
broadband service that transmits data across coaxial cables. Average speed 10 Mbps
internet connection type: fiber-optic service
uses fiber-optic lines, which transmits data using light signals. Average speed 20 Mbps
network adapter
is a computer hardware component that connects a computer to a computer network
network interface card (NIC)
is a type of network adapter that is integrated inside the system
home network server
is a specialized NAS device that also backup computers and function as gateways to the internet
wireless range extender
a device that strengthens the wireless signal and increases the range in order to improve connectivity
router
a type of network navigation device that is used for connecting two or more networks
switch
a type of network navigation device that is used for connecting two or more nodes in the same network or different network
network operating system (NOS)
software that handles requests for information, internet access, and the use of peripherals for the rest of the network nodes
firmware
utility software stores on read-only memory of routers (or many other devices) that controls its behavior
modem
device that converts (modulates) digital signals into analog signals to be transferred over phone lines, and also translates (demodulates) received signals back from analog to digital
network security
have a firewall
change your network name (service set identifier SSID) from default
unsecured wireless networks allow for
piggybacking- when something connects to a wireless network without permission
how to do bit parity***
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