Networks

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Question Answer
fidelity
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wierność
capabilities
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możliwości
node
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węzeł
radio waves
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fale radiowe
access point
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punkt dostępu
receiver-transmitter
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Nadajnik-odbiornik
topology
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topologia
connection point
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przyłącze
redistribute
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ponownie rozdzielać
bus
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szyna
fibre-optic cable
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światłowód
far apart
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daleko od siebie
boundaries
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Granice
checksum
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suma kontrolna
reversed
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odwrócony
subdivided
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podzielony
supervise
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kontrolować
congestion
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zator
reassemble
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zmontować
reroute
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przekierowywać
header
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nagłówek
comprising
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zawierający
encode
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zakodować
wiring (the system of wires)
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okablowanie (układ przewodów)
token
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odznaczenie
occur
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wydarzyć się
span
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rozciągać
slate
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tabliczka
Local Area Network
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LAN
peer-to-peer
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type of LAN architecture- two computers have the same capabilities
client-server
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type of LAN architecture where one computer acts as server controlling other workstations
Ethernet
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one of the most common protocols for LAN
router
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connecting different networks together, allows several computers on LAN to share internet connection
Gateway
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interface enabling dissimilar networks to communicate
Bridge
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hardware and software combination used to conect the same types of networks
Backbone
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handle major data traffic
Network
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number of computers and peripherals linked together
LAN
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network connecting computers over a small distance such as company
Server
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powerful computer storing data shared by clients
client
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network computer
thin client
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single computer
hub
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electronic device connecting all data cabling
Application Layer
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part of communication process that user sees. This layer converts a message's data from human-readable form into bits
Presentation Layer
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ensures that message is transmitted in language that receiving cmputer can interpret. Translates language, encrypts
Session Layer
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opens communication and has job of keeping straight the communication among all nodes. It set boundaries for the beggining and end of message. Establish whether message is send in full or half duplex
Transport Layer
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protects data being sent. It subdivides data into segments, creates checksum tests- that can be used later to determine if the data was scrambled. I make backup copies of data
Network Layer
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selects route for the message and forms data into packets, counts them and adds header cotaining sequence of packets
Data-link Layer
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supervises transmission, confirms the checksum, keeps copy of each packet until it receiver confirmation from the next point
physical layer
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encodes packets into analogue signal if the message is going across a telephone line and sends packets along that medium
intermediate node
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calculates and verifies the checksum for each packet, reroute the message to avoid congestion on network
half-duplex
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each computer takes turns sending and receiving
full-duplex
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both computers send and receive at the same time
modem
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used to convert signals from analogue to digital
Access Point
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enable computers to be connected together to form WLAN
asynchronous transmission
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sends one byte at the time
synchronous transmission
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sends data in blocks
Wireless fidelity
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Wi-Fi
WiFi
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creation of WLANS where cables and wires ale replaced by radio waves
Wireless Local Area Network
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WLAN
hotspot
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WLANs available for public use
Star topology
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topology where central devicce has all devices directly connected to it.
bus topology
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topology where every workstation is connected to main cable
ring topology
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Topology where workstations are connected one to another in closed loop
tree topology
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topology where group of stars ale connected to one bus
WANs
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have no geographical limit and may connect computers or LANs on opposite sides od the world.
Internet
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the largest WAN in existence
Wide Area Networks
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WANs
Integrated Services Digital Network
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ISDN
Digital Subscriber Line
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DSL
Network interface card
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NIC
Wired Equivalent Privacy
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WEP

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