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Test your basic knowledge |
Wireless Networking Vocab
Start Test
Study First
Subject
:
it-skills
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A device used on wireless LANs that transmits and receives wireless signals to and from multiple nodes and retransmits them to the rest of the network segment. Access points can connect a group of nodes with a network or two networks with each other.
MIMO (Multiple Input-Multiple Output)
Access Point
Site Survey
Fixed Wireless
2. When a wireless signal splits into secondary waves as it encounters an obstruction. The secondary waves continue to propagate in the direction in which they were split. (bending around an obstacle)
Established the credentials the wireless interface will use to communicate securely with the access point
Diffraction
Wireless Spectrum
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
3. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
Bluetooth Special Interest Group (SIG)
SSID (Service Set Identifier)
Reassociation
Dial Return
4. Which techniques help to reduce overhead in 802.11n wireless transmission?
Wireless Broadband
Frame aggregation - Channel bonding
Wireless Spectrum
BSSID (Basic Service Set Identifier)
5. A continuum of the electromagnetic waves used for data and voice communication. The _______ _______ (as defined by the FCC - which controls its use) spans frequencies between 9KHz and 300 GHz. each type of wireless service can be associated with one
Site Survey
5 GHz
Roaming
Wireless Spectrum
6. Another type of Spread-Spectrum signaling. In __________ - a signal's bits are distributed over an entire frequency band at once. Each bit is coded so that the receiver can reassemble the original signal upon receiving the bits.
Wireless
Mobile Wireless
DSSS (Direct-Sequence Spread Spectrum)
BSSID (Basic Service Set Identifier)
7. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
Beacon Frame
Narrowband
Bluetooth Special Interest Group (SIG)
Site Survey
8. In the context of 802.11n wireless networking - the ability for access points to issue multiple signals to stations - thereby multiplying the signal's strength and increasing their range and data-carrying capacity. Because the signals follow multipat
Wireless Gateway
MIMO (Multiple Input-Multiple Output)
Radiation pattern
Probe
9. An exchange in which a wireless station requests the exclusive right to communicate with an access point and the access point confirms that it has granted that request.
Passive Scanning
Diffraction
Stations
RTS/CTS (Request to Send/Clear to Send)
10. An end node on a network; used most often in the context of wireless networks.
ESS (Extended Service Set Identifier)
PAN (Personal Area Network)
Stations
Wireless Broadband
11. In ________ wireless - the receiver can be located anywhere within the transmitter's range. This allows the receiver to roam from one place to another while continuing to pick up its signal.
Mobile Wireless
RTS/CTS (Request to Send/Clear to Send)
5 GHz Band
Roaming
12. In the context of wireless - the phenomenon that occurs when an electromagnetic wave encounters an obstacle and bounces back toward its source. A wireless signal will bounce off objects whose dimensions are large compared to the signal's average wave
Scattering
Association
Reflection
Stations
13. A type of WLAN in which stations communicate with an access point and not directly with each other.
5 GHz
Infrastructure WLAN
Roaming
Range
14. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
Wireless Gateway
Satellite Return
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
B. 2.4 GHz
15. In the context of wireless networking - an assessment of client requirements - facility characteristics - and coverage areas to determine an access point arrangement that will ensure reliable wireless connectivity within a given area.
iwconfig
5 GHz Band
Dial Return
Site Survey
16. Which type of satellites is used to provide satellite Internet access?
Mobile Wireless
Site Survey
ESS (Extended Service Set Identifier)
Geosynchronous orbit
17. A unique character string used to identify an access point on an 802.11 network.
Geosynchronous orbit
802.11 transmission requirement that contributes to its inefficiency
Narrowband
SSID (Service Set Identifier)
18. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
Mobile Wireless
MIMO (Multiple Input-Multiple Output)
Hot Spot
FHSS (Frequency Hopping Spread Spectrum)
19. In IEEE terminology - the identifier for a BSS (basic service set)
BSSID (Basic Service Set Identifier)
Wireless Gateway
Reassociation
GEO (Geosynchronous Orbit or Geostationary Orbit)
20. A small (usually home) network composed of personal communications devices.
Bluetooth
Roaming
PAN (Personal Area Network)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
21. A method of satellite Internet access in which a subscriber receives data via a satellite downlink transmission - but sends data to the satellite via an analog modem (dial-up) connections.
Dial Return
Wireless Gateway
Wireless Router
BSSID (Basic Service Set Identifier)
22. A network access method used on 802.11 wireless networks. In CSMA/CA - before a node begins to send data it checks the medium. If it detects no transmission activity - it waits a brief - random amount of time - and then sends its transmission. If the
MEO (Medium Earth Orbiting)
Reassociation
Diffraction
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
23. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
Multipath signals
Probe
Ad Hoc
Dial Return
24. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
Spread Spectrum
Established the credentials the wireless interface will use to communicate securely with the access point
Frame aggregation - Channel bonding
SSID (Service Set Identifier)
25. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
Stations
WLAN
Reflection
Wireless Broadband
26. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
canning
5 GHz
Hot Spot
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
27. An ______ ______ issues and receives wireless signals with equal strength and clarity in all directions. This type of antenna is used when many different receivers must be able to pick up the signal - or when the receiver's location is highly mobile.
B. 2.4 GHz
BSSID (Basic Service Set Identifier)
2.4 GHz
Omnidirectional Antenna
28. An access point that provides routing functions.
Wireless Router
Hot Spot
In the 802.11 standard - IEEE specifies what type of access method?
Scattering
29. The term used to describe the recently released standards for high thoughput - long-distance digital data exchange over wireless connections. WiMAX (IEEE 802.16) is one example of a wireless broadband technology.
FHSS (Frequency Hopping Spread Spectrum)
Radiation Pattern
Beacon Frame
Wireless Broadband
30. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
802.11 transmission requirement that contributes to its inefficiency
Fading
Radiation Pattern
Frame aggregation - Channel bonding
31. A type of satellite Internet access service in which a subscriber sends and receives data to and from the Internet over the satellite link. This is a symmetrical technology - in which both upstream and downstream throughputs are advertised to reach 4
Satellite Return
A beacon frame
Association
2.4 GHz Band
32. A connection from an orbiting satellite to an Earth -based receiver.
Downlink
Omnidirectional Antenna
Wireless Spectrum
Wireless
33. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
DSSS (Direct-Sequence Spread Spectrum)
Beacon Frame
Geosynchronous orbit
iwconfig
34. A group of access points and associated stations (or basic service sets) connected to the same LAN.
Ad Hoc
Association
Frame aggregation - Channel bonding
ESS (Extended Service Set Identifier)
35. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
WLAN
Radiation pattern
Diffraction
Ad Hoc
36. The equipment on a satellite that receives an uplinked signal from Earth - amplifies the signal - modifies its frequency - then retransmits it (in a downlink) to an antenna on Earth.
ESSID (Extended Service Set Identifier)
Transponder
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Site Survey
37. The range of radio frequencies from 2.4 to 2.4835 GHz. This band allows for 11 unlicensed channels - and is used by WLANs that follow the popular 802.11b and 802.11g standards.
ESSID (Extended Service Set Identifier)
2.4 GHz Band
Mobile Wireless
A beacon frame
38. The term used to refer to a satellite that maintains a constant distance from a point on the equator at every point in its orbit. Geosynchronous orbit satellites are the type used to provide satellite Internet access.
2.4 GHz Band
Established the credentials the wireless interface will use to communicate securely with the access point
GEO (Geosynchronous Orbit or Geostationary Orbit)
In the 802.11 standard - IEEE specifies what type of access method?
39. In _____ - a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.
Narrowband
Hot Spot
Range
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
40. Used by newer types of WLANs. A range of frequencies that comprises four frequency bands: 5.1 - 5.3 - 5.4 - and 5.8GHz. It consists of 24 unlicensed bands - each 20 MHz wide. This band is used by WLANs that follow the 802.11a and 802.11n standards.
5 GHz Band
A beacon frame
BSSID (Basic Service Set Identifier)
Multipath signals
41. A wireless networking standard that uses FHSS signaling in the 2.4GHz band to achieve a maximum throughput of either 723 Kbps or 2.1 Mbps - depending on the version. Bluetooth was designed for use primarily with small office or home networks in which
Site Survey
5 GHz
802.11 transmission requirement that contributes to its inefficiency
Bluetooth
42. The locations of the transmitter and receiver do not move. The transmitting antenna focuses its energy directly toward the receiving antenna. This results in a point to point link. (Advantage: receiver's location is predictable - energy need not be w
Narrowband
Hot Spot
Beacon Frame
Fixed Wireless
43. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
Bluetooth
Geosynchronous orbit
Satellite Return
Roaming
44. A change in a wireless signal's strength as a result of some of the electromagnetic energy being scattered - reflected - or diffracted after being issued by the transmitter.
In the 802.11 standard - IEEE specifies what type of access method?
Fading
ESSID (Extended Service Set Identifier)
Wireless Router
45. Omnidirectional
Channel Bonding
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Scattering
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
46. A type of satellite that orbits the Earth roughly 6000 to 12 -000 miles above its service - positioned between the equator and the poles. MEO satellites can cover a larger area of the Earth's surface than LEO satellites while using less power and cau
Hot Spot
MEO (Medium Earth Orbiting)
Radiation Pattern
5 GHz Band
47. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
Radiation pattern
Reassociation
Downlink
Infrastructure WLAN
48. An access point that provides routing functions and is used as a gateway.
Wireless Gateway
Roaming
DSSS (Direct-Sequence Spread Spectrum)
Access Point
49. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
Reflection
Radiation pattern
2.4 GHz
BSSID (Basic Service Set Identifier)
50. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
Radiation Pattern
Hot Spot
Wireless Gateway
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)