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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 802.11n wireless technology - the combination of two 20-MHz frequency band to create one 40-MHz frequency band that can carry more than twice the amount of data that a single 20-MHz band could. It's recommended for use only in the 5
Probe
RTS/CTS (Request to Send/Clear to Send)
Channel Bonding
Geosynchronous orbit
2. A destination node must issue an acknowledgment for every packet that is received intact.
802.11 transmission requirement that contributes to its inefficiency
Diffraction
Range
canning
3. A group of access points and associated stations (or basic service sets) connected to the same LAN.
Spread Spectrum
Stations
802.11 transmission requirement that contributes to its inefficiency
ESS (Extended Service Set Identifier)
4. An access point that provides routing functions and is used as a gateway.
In the 802.11 standard - IEEE specifies what type of access method?
Wireless Gateway
DSSS (Direct-Sequence Spread Spectrum)
5 GHz Band
5. 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.
Stations
Access Point
Infrastructure WLAN
MEO (Medium Earth Orbiting)
6. 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.
Site Survey
iwconfig
PAN (Personal Area Network)
Fading
7. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
FHSS (Frequency Hopping Spread Spectrum)
LEO (Low Earth Orbiting)
B. 2.4 GHz
2.4 GHz
8. The use of multiple frequencies to transmit a signal. (because the signal is spread out over the wireless spectrum)
Downlink
Channel Bonding
Spread Spectrum
Established the credentials the wireless interface will use to communicate securely with the access point
9. 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
Access Point
MEO (Medium Earth Orbiting)
Diffraction
Wireless Spectrum
10. A small (usually home) network composed of personal communications devices.
PAN (Personal Area Network)
Channel Bonding
Ad Hoc
Wireless Spectrum
11. 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.
BSSID (Basic Service Set Identifier)
Channel Bonding
5 GHz Band
LEO (Low Earth Orbiting)
12. 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.
MEO (Medium Earth Orbiting)
canning
DSSS (Direct-Sequence Spread Spectrum)
LOS (Line of Sight)
13. A unique character string used to identify an access point on an 802.11 network.
Geosynchronous orbit
SSID (Service Set Identifier)
Reassociation
ESSID (Extended Service Set Identifier)
14. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
iwconfig
SSID (Service Set Identifier)
Bluetooth Special Interest Group (SIG)
Established the credentials the wireless interface will use to communicate securely with the access point
15. The signals made of electromagnetic energy that travel through the atmosphere.
Wireless
PAN (Personal Area Network)
canning
Beacon Frame
16. A type of WLAN in which stations communicate with an access point and not directly with each other.
Wireless Gateway
Infrastructure WLAN
Passive Scanning
Wireless
17. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
Spread Spectrum
Probe
LOS (Line of Sight)
BSSID (Basic Service Set Identifier)
18. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
B. 2.4 GHz
Roaming
Mobile Wireless
iwconfig
19. Which type of satellites is used to provide satellite Internet access?
FHSS (Frequency Hopping Spread Spectrum)
Geosynchronous orbit
Transponder
Ad Hoc
20. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
FHSS (Frequency Hopping Spread Spectrum)
2.4 GHz Band
Association
Radiation pattern
21. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Wireless Spectrum
Hot Spot
Stations
22. 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
MIMO (Multiple Input-Multiple Output)
MEO (Medium Earth Orbiting)
Wireless Gateway
Infrastructure WLAN
23. 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)
canning
Association
Fixed Wireless
24. 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.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Radiation Pattern
Association
2.4 GHz Band
25. 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
WLAN
802.11 transmission requirement that contributes to its inefficiency
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Probe
26. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
WLAN
iwconfig
Stations
27. 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.
WLAN
Association
Wireless Broadband
Mobile Wireless
28. An access point that provides routing functions.
Dial Return
Wireless Router
MEO (Medium Earth Orbiting)
Bluetooth Special Interest Group (SIG)
29. 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.
Beacon Frame
Access Point
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Directional Antenna
30. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
GEO (Geosynchronous Orbit or Geostationary Orbit)
WLAN
A beacon frame
Wireless Spectrum
31. 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.
Reassociation
Dial Return
MEO (Medium Earth Orbiting)
802.11 transmission requirement that contributes to its inefficiency
32. 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
LEO (Low Earth Orbiting)
Fading
Diffraction
Passive Scanning
33. A connection from an orbiting satellite to an Earth -based receiver.
Association
Fixed Wireless
Downlink
ESS (Extended Service Set Identifier)
34. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
Narrowband
FHSS (Frequency Hopping Spread Spectrum)
Established the credentials the wireless interface will use to communicate securely with the access point
iwconfig
35. 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
Wireless Spectrum
ESSID (Extended Service Set Identifier)
Radiation pattern
36. ISM Range - Radio frequency band that may experience home appliance interference - Unregulated radio frequency band.
Multipath signals
Directional Antenna
2.4 GHz
A beacon frame
37. 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.
Wireless
FHSS (Frequency Hopping Spread Spectrum)
Omnidirectional Antenna
Directional Antenna
38. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Wireless Gateway
B. 2.4 GHz
Scattering
39. 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)
802.11 transmission requirement that contributes to its inefficiency
Diffraction
LOS (Line of Sight)
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
40. 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
Narrowband
Wireless Gateway
Satellite Return
DSSS (Direct-Sequence Spread Spectrum)
41. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
Wireless Router
Directional Antenna
Spread Spectrum
Roaming
42. Which techniques help to reduce overhead in 802.11n wireless transmission?
Reassociation
Passive Scanning
5 GHz
Frame aggregation - Channel bonding
43. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
Roaming
Wireless Spectrum
Wireless Broadband
Established the credentials the wireless interface will use to communicate securely with the access point
44. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
Multipath signals
iwconfig
Roaming
A beacon frame
45. A. CSMA/CA
Roaming
Ad Hoc
Narrowband
In the 802.11 standard - IEEE specifies what type of access method?
46. 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
2.4 GHz Band
iwconfig
In the 802.11 standard - IEEE specifies what type of access method?
47. This is the diffusion - or the reflection in multiple different directions - of a signal. This occurs when a wireless signal encounters an object that has small dimensions compared to the signal's wavelength.
Omnidirectional Antenna
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Scattering
Frame aggregation - Channel bonding
48. 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.
Narrowband
RTS/CTS (Request to Send/Clear to Send)
ESS (Extended Service Set Identifier)
Transponder
49. Regulated radio frequency band - 1/3rd range of 802.11b or g - Usually found in corporate environments.
5 GHz
802.11 transmission requirement that contributes to its inefficiency
FHSS (Frequency Hopping Spread Spectrum)
Passive Scanning
50. This type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.
LOS (Line of Sight)
Radiation Pattern
DSSS (Direct-Sequence Spread 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?