Flashcards
Keywords for connectivity
Cards in this deck (22)
- 1What is a home network?Most homes with a home network use it primarily to allow users to share an internet connection.
- 2Local Area Network (LAN)LAN allows you to connect to the internet, computers, laptops, peripherals and internet telephone services.
- 3RouterRouter is used to connect the compiters together in a network wirelessly by giving them an internal IP address so that it knows where to send the data. Most routerhave an inbuilt modem which converts data a computer understand.
- 4Cable connectionNetwork with Ethernet cable or CAT5 cable
- 5Wireless connectionWi-Fi or wireless ethernet connection to router using radio waves or micro waves
- 6EncryptionEncryption scrambles data so that onl;y computers with the right key can read it. The commonest form of protection for wireless networks isn WEP, but WPA-PSK and WPA2 are more secure and becoming mroe secure.
- 7Wi-FiA facility allowing computers, smartphones or other devices to connect to the internet or communicate with one another wirelessly within a particular area. This area is often regarded as a wireless access point or 'hotspot'.
- 8Mobile BroadbandMobile broadband means that you can get online wherever you are as long as you're in one of our 3G or 4G coverage areas- don't worry, we cover 97% of the population.
- 9ProtocolsProtocols are the rules that devices must follow when they are communicating with each other.
- 10VoIPVoice over internet protocol is the set of rules for transmitting audio messages over the internet. The rules also enable someone to make free voice calls from a computer to another computer/mobile device.
- 11ServerServer is a computer dedicated to provide some specific service for other computers on the network.
- 12POPPOP, POP3 or POst Office Protocol allows the recipient read the email. Once the email is read, the main server will download the email to the computer or mobile device. The email is then deleted from the server and can be read offline.
- 13IMAPIMAP or Internet Message Access Protocol allows the recipient read the email on the mail server. The email is not deleted from the server and can be accessed anywhere using any computer or mobile device, as long as there is internet connection.
- 14SMTPSMTP or Simple Mail Transfer Protocol is used when an email is sent from the sender's email client, for example, outlook, hotmail, to the sender's email and when the email is delivered to the recipients email server.
- 15HTTPHypertext Transfer Protocol is the protocol of the World Wide Web. When you type in a website address the client uses HTTP to ask the web server to send the files needed to show the web page on your computer.
- 16HTTPSWhen sending confidential information over the internet the web server uses a protocol called Hypertext Transfer Protocol over SSL. The data transferred is encrypted so that it cannot be read anyone except the recipient.
- 17Digital CertificateIf you double-click the padlock icon or security icon you will see the website's digital certificate. These digital certificates are issued by companies such as Norton. They certify the identity of the website your browser is communicating with.
- 18The InternetThe internet is a huge network that links networks of computers all over the world.
- 19Peer-to-peer networkA peer-to-peer network is when digital devices communicate wirelessly with each other directly without the needs for a transmitter between them.
- 20BandwidthBandwidth is the number of bits that can go through the network connection in 1 second. It is measured in bits per second (bps).
- 21LatencyLatency is the time in milliseconds between a bit leaving one device and arriving at the other. It is measured in milliseconds(ms).
- 22—
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- GCSE IT Flashcards on Keywords for connectivity, created by Mirdha Sadia on 18/10/2016.
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- Mirdha Sadia
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