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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. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
In the 802.11 standard - IEEE specifies what type of access method?
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Wireless Broadband
Reassociation
2. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
Beacon Frame
FHSS (Frequency Hopping Spread Spectrum)
5 GHz
ESS (Extended Service Set Identifier)
3. 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.
Frame aggregation - Channel bonding
Beacon Frame
Dial Return
Omnidirectional Antenna
4. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
Passive Scanning
Multipath signals
MEO (Medium Earth Orbiting)
Mobile Wireless
5. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
Ad Hoc
5 GHz
Narrowband
SSID (Service Set Identifier)
6. Regulated radio frequency band - 1/3rd range of 802.11b or g - Usually found in corporate environments.
5 GHz
MEO (Medium Earth Orbiting)
Dial Return
Geosynchronous orbit
7. A method used by wireless stations to detect the presence of an access point. In _____ _____ - the station issues a probe to each channel in its frequency range and waits for the access point to respond.
802.11 transmission requirement that contributes to its inefficiency
Active Scanning
iwconfig
Channel Bonding
8. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
Diffraction
Probe
Bluetooth Special Interest Group (SIG)
MEO (Medium Earth Orbiting)
9. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
Ad Hoc
Range
iwconfig
Hot Spot
10. The use of multiple frequencies to transmit a signal. (because the signal is spread out over the wireless spectrum)
Beacon Frame
Site Survey
In the 802.11 standard - IEEE specifies what type of access method?
Spread Spectrum
11. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
iwconfig
Beacon Frame
5 GHz Band
ESS (Extended Service Set Identifier)
12. Omnidirectional
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
GEO (Geosynchronous Orbit or Geostationary Orbit)
Probe
13. 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.
Transponder
SSID (Service Set Identifier)
In the 802.11 standard - IEEE specifies what type of access method?
ESS (Extended Service Set Identifier)
14. 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.
LEO (Low Earth Orbiting)
Diffraction
Dial Return
2.4 GHz Band
15. 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
Bluetooth
GEO (Geosynchronous Orbit or Geostationary Orbit)
canning
LEO (Low Earth Orbiting)
16. 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
Dial Return
802.11 transmission requirement that contributes to its inefficiency
MEO (Medium Earth Orbiting)
Fading
17. 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
Diffraction
FHSS (Frequency Hopping Spread Spectrum)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Established the credentials the wireless interface will use to communicate securely with the access point
18. This type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.
Access Point
LOS (Line of Sight)
Wireless
SSID (Service Set Identifier)
19. A connection from an orbiting satellite to an Earth -based receiver.
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Reassociation
Downlink
GEO (Geosynchronous Orbit or Geostationary Orbit)
20. 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.
Wireless Broadband
Transponder
Narrowband
iwconfig
21. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
5 GHz Band
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Dial Return
22. 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)
Beacon Frame
Hot Spot
Spread Spectrum
Diffraction
23. 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 Router
MIMO (Multiple Input-Multiple Output)
Omnidirectional Antenna
ESSID (Extended Service Set Identifier)
24. 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.
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
ESS (Extended Service Set Identifier)
GEO (Geosynchronous Orbit or Geostationary Orbit)
Roaming
25. A destination node must issue an acknowledgment for every packet that is received intact.
PAN (Personal Area Network)
Range
802.11 transmission requirement that contributes to its inefficiency
iwconfig
26. A. CSMA/CA
Transponder
In the 802.11 standard - IEEE specifies what type of access method?
Association
Downlink
27. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
Reassociation
FHSS (Frequency Hopping Spread Spectrum)
canning
MIMO (Multiple Input-Multiple Output)
28. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
Roaming
SSID (Service Set Identifier)
Directional Antenna
LOS (Line of Sight)
29. 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
PAN (Personal Area Network)
SSID (Service Set Identifier)
Fixed Wireless
Frame aggregation - Channel bonding
30. 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.
Ad Hoc
Site Survey
Fading
MIMO (Multiple Input-Multiple Output)
31. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
Channel Bonding
B. 2.4 GHz
Mobile Wireless
iwconfig
32. A special identifier shared by BSSs that belong to the same ESS.
ESSID (Extended Service Set Identifier)
FHSS (Frequency Hopping Spread Spectrum)
Fading
Wireless Spectrum
33. 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.
BSSID (Basic Service Set Identifier)
DSSS (Direct-Sequence Spread Spectrum)
Mobile Wireless
5 GHz Band
34. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
2.4 GHz
Radiation Pattern
Range
RTS/CTS (Request to Send/Clear to Send)
35. 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.
RTS/CTS (Request to Send/Clear to Send)
Narrowband
LEO (Low Earth Orbiting)
DSSS (Direct-Sequence Spread Spectrum)
36. A type of satellite that orbits the Earth with an altitude between 100 and 900 miles - closer to the Earth's poles than the orbits of either GEO or MEO satellites. LEO satellites cover a smaller geographical range than GEO satellites and require less
Passive Scanning
LEO (Low Earth Orbiting)
SSID (Service Set Identifier)
Wireless Router
37. Which type of satellites is used to provide satellite Internet access?
Fading
Probe
5 GHz Band
Geosynchronous orbit
38. In the context of wireless networking - the process in which a station listens to several channels within a frequency range for a beacon issued by an access point.
Passive Scanning
PAN (Personal Area Network)
Probe
MIMO (Multiple Input-Multiple Output)
39. 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
Range
Wireless Spectrum
Wireless Gateway
Fixed Wireless
40. 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.
LEO (Low Earth Orbiting)
Access Point
Diffraction
Ad Hoc
41. A group of access points and associated stations (or basic service sets) connected to the same LAN.
Satellite Return
Radiation Pattern
Probe
ESS (Extended Service Set Identifier)
42. The process a wireless station undergoes to find an access point.
Stations
LOS (Line of Sight)
iwconfig
canning
43. 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)
2.4 GHz Band
5 GHz Band
Association
44. A unique character string used to identify an access point on an 802.11 network.
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
SSID (Service Set Identifier)
ESSID (Extended Service Set Identifier)
Fixed Wireless
45. In the context of wireless networking - the communication that occurs between a station and an access point to enable the station to connect to the network via that access point.
Fading
WLAN
Hot Spot
Association
46. Which techniques help to reduce overhead in 802.11n wireless transmission?
Frame aggregation - Channel bonding
Bluetooth Special Interest Group (SIG)
2.4 GHz
MIMO (Multiple Input-Multiple Output)
47. A type of WLAN in which stations communicate with an access point and not directly with each other.
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Wireless Broadband
Established the credentials the wireless interface will use to communicate securely with the access point
Infrastructure WLAN
48. A ______ ______ issues wireless signals along a single direction. This type of antenna is used when the source needs to communicate with one destination - as in a point to point link.
A beacon frame
Mobile Wireless
Multipath signals
Directional Antenna
49. 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.
Wireless
Access Point
LEO (Low Earth Orbiting)
Site Survey
50. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
802.11 transmission requirement that contributes to its inefficiency
Omnidirectional Antenna
Radiation pattern
Established the credentials the wireless interface will use to communicate securely with the access point