Network+ Chapter 15 Power Words - Defined

Chapter 15 - Wireless Networking
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1. 802.1X – IEEE Standard for port-based Network Access Control (PNAC).
2. 802.11 – evolving family of specifications for wireless local area networks (WLANs) developed by a working group of the Institute of Electrical and Electronics Engineers (IEEE).
3. 802.11a – an IEEE standard for transmitting data over a wireless network.
4. 802.11a-ht - technical terms for mixed mode 802.11a/802.11g operation.
5. 802.11b – one of several Wi-Fi standards developed by the Institute of Electrical and Electronics Engineers (IEEE).
6. 802.11g – a Wi-Fi standard developed by the IEEE for transmitting data over a wireless network.
7. 802.11g-ht – a Wi-Fi standard developed by the IEEE for transmitting data over a wireless network.
8. 802.11i – a standard for wireless local area networks (WLANs) that provides improved encryption for networks that use the popular 802.11a, 802.11b (which includes Wi-Fi) and 802.11g standards.
9. 802.11n – a Wi-Fi standard that was introduced by the IEEE in 2007 and officially published in 2009.
10. Ad hoc mode – The mode of operation in a peer-to-peer wireless network, such as Wi-Fi or Bluetooth, in which computers communicate with each other rather than to a central base station (access point).
11. AES – is a symmetric block cipher chosen by the U.S. government to protect classified information and is implemented in software and hardware throughout the world to encrypt sensitive data.
12. Bandwidth saturation – is a phenomenon that occurs when all a circuits available bandwidth in a given direction is being utilized by a large upload or download.
13. BSS – Basic Server Set.
14. BSSID – Basic Server Set Identifier.
15. Bounce – a method of hiding the source of a user's network connection.
16. BYOD – Bring Your Own Device.
17. CSMA/CA – Carrier Sense Multiple Access / Collision Avoidance.
18. Channel – refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel in telecommunications and computer networking.
19. Channel bonding – a practice commonly used in IEEE 802.11 implementations in which two adjacent channels within a given frequency band are combined to increase throughput between two or more wireless devices.
20. Dead spot – a location within the coverage area of a wireless network where a signal is not received.
21. Dipole Antenna – the simplest type of radio antenna, consisting of a conductive wire rod that is half the length of the maximum wavelength the antenna is to generate.
22. DSSS – Direct Sequence Spread Spectrum.
23. DCF – Distributed Coordination Function.
24. Encryption – the process of encrypting or encoding data and messages transmitted or communicated over a computer network.
25. Evil Twin – a fraudulent Wi-Fi access point that appears to be legitimate but is set up to eavesdrop on wireless communications.
26. ESS – Extended Service Set.
27. ESSID – Extended Service Set Identifier.
28. EAP – Extendable Authentication Protocol.
29. FHSS – Frequency Hopping Spread Spectrum.
30. Gain – the ratio of an output power to an input power.
31. Greenfield Mode – an operational mode of an 802.11n network that can maximize the speed of data transfers.
32. IBSS – Independent Basic Service Set.
33. Infrastructure Mode – an 802.11 networking framework in which devices communicate with each other by first going through an Access Point (AP).
34. IFG – Interframe Gap.
35. Latency – is the amount of time a message takes to traverse a system.
36. Legacy Mode – is the generic name assigned to any old network, which is rarely used today and not part of the TCP/IP protocol suite.
37. Link State – is a complex routing technique in which each router shares information with other routers about the reachability of other networks and the metric to reach the other networks in order to determine the best path.
38. MAC addressing filtering – a security access control method whereby the MAC address assigned to each network card is used to determine access to the network.
39. Mixed Mode – an operational mode of an 802.11n network that can maximize the speed of data transfers.
40. MIMO – Multiple in Multiple Out.
41. NAS – Network Access Server.
42. Network Name – a text string that devices use to reference a particular computer network.
43. OFDM – Orthogonal Frequency Division Multiplexing.
44. Peer-to-peer mode – computer systems which are connected to each other via the Internet.
45. PAN – Personal Area Network.
46. PCF – Point Coordination Function.
47. Point-to-multipoint – communication which is accomplished via a distinct type of one-to-many connection, providing multiple paths from a single location to multiple locations.
48. Point-to-point – communication which is accomplished via a distinct type of one-to-many connection, providing multiple paths from a single location to multiple locations.
49. PoE – Power over Ethernet.
50. RFI – Radio Frequency Interference.
51. RADIUS server – a client/server protocol and software that enables remote access servers to communicate with a central server to authenticate dial-in users and authorize their access to the requested system or service.
52. Roaming – the ability for a customer of mobile communications to automatically make and receive telephone calls, send and receive data, or access other services while travelling outside the geographical coverage area of the home network, by means of using a network of another operator.
53. Rouge AP – an access point that has been installed on a secure network without explicit authorization from a system administrator.
54. SSID – Service Set Identifier.
55. Signal Strength – the magnitude of an electric field at a reference point, which is located at a significant distance from the transmitting antenna. This is expressed in terms of the signal power of the receiver or the voltage per length received by the reference antenna.
56. Site Survey – the process of planning and designing a wireless network, to provide a wireless solution that will deliver the required wireless coverage, data rates, network capacity, roaming capability and Quality of Service.
57. SSID broadcast – the name of your wireless network.
58. Supplicant – an entity at one end of a point-to-point LAN segment that seeks to be authenticated by an authenticator attached to the other end of that link.
59. TKIP – Temporal Key Integrity Program.
60. Thick client – full-featured computers that are connected to a network.
61. Thin Client – a client designed to be especially small so that the bulk of the data processing occurs on the server.
62. Transmit beamforming – a technique that focuses a wireless signal towards a specific receiving device, rather than having the signal spread in all directions from a broadcast antenna, as it normally would.
63. Unidirectional antenna – Basically give off bad signals.
64. VLAN pooling – a feature that enables you to group multiple wireless controller VLANs to form a VLAN pool.
65. Wi-Fi – an abbreviation for wireless fidelity.
66. Wi-Fi analyzer – a useful software application that can tell you many things about your wireless network and the networks around you, helping you optimize your Wi-Fi for best performance.
67. WPA – Wi-Fi Protected Access.
68. WPA2 – Wi Fi Protected Access 2.
69. WPS – Wi-Fi Protected Setup.
70. WEP – Wired Equivalent Privacy.
71. WAP – Wireless Access Point.
72. Wireless analyzer – a useful software application that can tell you many things about your wireless network and the networks around you, helping you optimize your Wi-Fi for best performance.
73. Wireless bridge – A device that connects two LAN segments together via infrared or microwave transmission.
74. Wireless controller – used in combination with the Lightweight Access Point Protocol to manage light-weight access points in large quantities by the network administrator or network operations center.
75. WLAN – Wireless LAN.
76. Wireless Network – a computer network that uses wireless data connections between network nodes.
77. Wireless Survey tool – a physical survey of the premises where the wireless network will be installed.
78. WPA2-Enterprise – is the security method added to WPA for wireless networks that provides stronger data protection and network access control.