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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. 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.
DSSS (Direct-Sequence Spread Spectrum)
Radiation Pattern
B. 2.4 GHz
Dial Return
2. 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.
Wireless
Scattering
In the 802.11 standard - IEEE specifies what type of access method?
Dial Return
3. 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.
Scattering
Wireless Router
Narrowband
Spread Spectrum
4. 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.
SSID (Service Set Identifier)
5 GHz Band
Established the credentials the wireless interface will use to communicate securely with the access point
802.11 transmission requirement that contributes to its inefficiency
5. An end node on a network; used most often in the context of wireless networks.
Fading
Probe
Stations
Directional Antenna
6. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
Wireless Router
Dial Return
Channel Bonding
Roaming
7. Which techniques help to reduce overhead in 802.11n wireless transmission?
WLAN
SSID (Service Set Identifier)
Fixed Wireless
Frame aggregation - Channel bonding
8. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
LOS (Line of Sight)
iwconfig
MIMO (Multiple Input-Multiple Output)
Bluetooth Special Interest Group (SIG)
9. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.
ESS (Extended Service Set Identifier)
iwconfig
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Range
10. 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
Access Point
Diffraction
RTS/CTS (Request to Send/Clear to Send)
11. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Omnidirectional Antenna
Bluetooth Special Interest Group (SIG)
Wireless
12. In IEEE terminology - the identifier for a BSS (basic service set)
WLAN
Mobile Wireless
2.4 GHz
BSSID (Basic Service Set Identifier)
13. An access point that provides routing functions.
Wireless Router
LOS (Line of Sight)
Wireless Spectrum
Access Point
14. 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.
canning
Diffraction
2.4 GHz Band
Fixed Wireless
15. 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.
5 GHz Band
Channel Bonding
Stations
Wireless Broadband
16. This type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.
Probe
Fixed Wireless
Wireless Router
LOS (Line of Sight)
17. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
Established the credentials the wireless interface will use to communicate securely with the access point
MIMO (Multiple Input-Multiple Output)
Wireless Spectrum
Hot Spot
18. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
Wireless Gateway
Wireless Router
WLAN
Reassociation
19. 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
ESS (Extended Service Set Identifier)
Geosynchronous orbit
Satellite Return
Directional Antenna
20. A connection from an orbiting satellite to an Earth -based receiver.
Directional Antenna
LEO (Low Earth Orbiting)
Downlink
MIMO (Multiple Input-Multiple Output)
21. 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)
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
FHSS (Frequency Hopping Spread Spectrum)
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
22. 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.
802.11 transmission requirement that contributes to its inefficiency
5 GHz Band
Fading
Site Survey
23. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
RTS/CTS (Request to Send/Clear to Send)
Spread Spectrum
Ad Hoc
Stations
24. 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
Channel Bonding
MEO (Medium Earth Orbiting)
Established the credentials the wireless interface will use to communicate securely with the access point
Wireless Broadband
25. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
Mobile Wireless
B. 2.4 GHz
Wireless Broadband
Association
26. A destination node must issue an acknowledgment for every packet that is received intact.
5 GHz
RTS/CTS (Request to Send/Clear to Send)
Satellite Return
802.11 transmission requirement that contributes to its inefficiency
27. An access point that provides routing functions and is used as a gateway.
SSID (Service Set Identifier)
Wireless Gateway
PAN (Personal Area Network)
MIMO (Multiple Input-Multiple Output)
28. 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.
Radiation Pattern
Passive Scanning
DSSS (Direct-Sequence Spread Spectrum)
In the 802.11 standard - IEEE specifies what type of access method?
29. 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.
Range
Active Scanning
Association
Directional Antenna
30. A. CSMA/CA
Geosynchronous orbit
In the 802.11 standard - IEEE specifies what type of access method?
Wireless
LEO (Low Earth Orbiting)
31. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
802.11 transmission requirement that contributes to its inefficiency
Mobile Wireless
Probe
5 GHz
32. 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.
Infrastructure WLAN
SSID (Service Set Identifier)
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Directional Antenna
33. 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
MEO (Medium Earth Orbiting)
In the 802.11 standard - IEEE specifies what type of access method?
802.11 transmission requirement that contributes to its inefficiency
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
34. 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
Wireless Router
PAN (Personal Area Network)
Wireless Spectrum
Bluetooth Special Interest Group (SIG)
35. 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)
Bluetooth Special Interest Group (SIG)
FHSS (Frequency Hopping Spread Spectrum)
MIMO (Multiple Input-Multiple Output)
Diffraction
36. The signals made of electromagnetic energy that travel through the atmosphere.
Probe
Wireless
WLAN
MIMO (Multiple Input-Multiple Output)
37. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
Mobile Wireless
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
B. 2.4 GHz
Satellite Return
38. 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.
Probe
Dial Return
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Access Point
39. Which type of satellites is used to provide satellite Internet access?
Geosynchronous orbit
Bluetooth
Scattering
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
40. The use of multiple frequencies to transmit a signal. (because the signal is spread out over the wireless spectrum)
Roaming
Mobile Wireless
Spread Spectrum
Access Point
41. 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.
Active Scanning
Radiation pattern
Bluetooth
iwconfig
42. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
Radiation Pattern
Passive Scanning
BSSID (Basic Service Set Identifier)
Multipath signals
43. 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.
Association
Channel Bonding
Wireless
Omnidirectional Antenna
44. 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.
Spread Spectrum
Established the credentials the wireless interface will use to communicate securely with the access point
RTS/CTS (Request to Send/Clear to Send)
Frame aggregation - Channel bonding
45. ISM Range - Radio frequency band that may experience home appliance interference - Unregulated radio frequency band.
2.4 GHz
LOS (Line of Sight)
Channel Bonding
Established the credentials the wireless interface will use to communicate securely with the access point
46. 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.
A beacon frame
Mobile Wireless
SSID (Service Set Identifier)
Infrastructure WLAN
47. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
LOS (Line of Sight)
A beacon frame
Probe
iwconfig
48. 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
Association
Frame aggregation - Channel bonding
GEO (Geosynchronous Orbit or Geostationary Orbit)
49. In _____ - a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.
Fixed Wireless
SSID (Service Set Identifier)
Reassociation
Narrowband
50. 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
MIMO (Multiple Input-Multiple Output)
ESSID (Extended Service Set Identifier)
5 GHz
Fixed Wireless