Flashcards
Topic 2 - Connectivity
Cards in this deck (31)
- 1LAN(Local Area Network) a computer network that links devices a limited area such as a residence, school, laboratory, university campus or office building, usually less than 1km.
- 2WAN(Wide Area Network) a computer network in which the computers connected may be far apart, generally having a radius of more than 1km.
- 3RouterA networking device that forwards data packets between computer networks.
- 4IP Address(Internet Protocol Address) the personal address of your computer (just like your home address), so that servers know where to send the information that you have requested.
- 5WiFi(Wireless Fidelity) it is similar to Bluetooth in that it is used to exchange data wirelessly, but the signals can travel greater distances.
- 6Network securityProtection of the access to files and directories in a computer network against hacking, misuse and unauthorised changes to the system.
- 7EncryptionFor security, data is translated into a secret code according to a set of rules I a special ‘key’. To convert the data back into plain text, the receiver must also have the key.
- 8(MAC) Addresses(Media Access Control) is the computer's unique hardware number.
- 9Service Set Identifier (SSID)A sequence of characters that uniquely names a wireless local area network (WLAN).
- 10CompatibilityThe ability of a device to communicate and share information with another device.
- 11ConvergenceWhen one device is developed to carry out functions that were originally performed by several different devices.
- 12BandwidthThe amount of data that you can fit through an Internet connection. You can compare it to a ten-lane motorway which can fit more cars on it that a four-lane motorway. Bandwidth is measured is bits per second (bps). This indicated the number of bits of information that can fit down the line in one second. Kb or Kbps means thousands of bits per second; Mb or Mbps means millions of bits per second.
- 13LatencyThe time delay between the moment something is initiated and the moment It becomes detectable.
- 14Mobile Broadband3G or 4G.
- 15DongleA small piece of hardware that connects to a computer and has uses, including data storage and picking up Bluetooth and 3G signals. A dongle may be portable like a USB pen.
- 16Roaming ChargeThe ability to get access to the Internet when away from home at the price of a local call or at a charge considerably less than the regular long-distance charges.
- 17Peer to Peer(P2P) sharing files among groups of people who are logged on to a file-sharing network.
- 18WiFi Direct(Initially called Wi-Fi P2P) Is a Wi-Fi standard, enabling devices to easily connect with each other without having a wireless access point.
- 19ProtocolsA set of rules used by computers to communicate with each other across a network.
- 20VOIP(Voice Over Internet Protocol) this technology is used to make telephone calls via the internet, usually at a cheaper cost.
- 21POP(Post Office Protocol) a protocol used to retrieve e-mail from a mail server.
- 22IMAP(Internet Message Access Protocol) a standard email protocol that stores email messages on a mail server.
- 23SMTP(Simple Mail Transfer Protocol) the protocol used for sending e-mail over the Internet.
- 24HTTP(Hyper Text Transfer Protocol) the protocol used by the World Wide Web it defines how messages are formatted and transmitted.
- 25HTTPS(HTTP Secure) encrypts and decrypts user page requests as well as the pages that are returned by the Web server.
- 26Digital CertificateAn electronic "passport" that allows a person, computer or organization to exchange information securely over the Internet.
- 27Remote accessThe ability to get access to a computer or a network from a remote distance.
- 28InterceptionSome unauthorized party has gained access to an asset.
- 29AuthenticationnA process where users verify that they are who they say they are.
- 30Captcha TestA type of challenge-response test used in computing to determine whether or not the user is human.
- 31RFID(Radio Frequency ID) they are usually used on desirable products in the supermarket on products such as Blu-Ray disks.
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- GCSE ICT Flashcards on Topic 2 - Connectivity, created by Alex Walmsley on 12/03/2017.
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- Alex Walmsley
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