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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 group of access points and associated stations (or basic service sets) connected to the same LAN.
Stations
ESS (Extended Service Set Identifier)
Downlink
Reflection
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)
GEO (Geosynchronous Orbit or Geostationary Orbit)
Reassociation
Diffraction
PAN (Personal Area Network)
3. Which techniques help to reduce overhead in 802.11n wireless transmission?
Active Scanning
Frame aggregation - Channel bonding
Narrowband
Channel Bonding
4. A. CSMA/CA
RTS/CTS (Request to Send/Clear to Send)
In the 802.11 standard - IEEE specifies what type of access method?
Hot Spot
Fixed Wireless
5. Regulated radio frequency band - 1/3rd range of 802.11b or g - Usually found in corporate environments.
5 GHz Band
Range
5 GHz
Fixed Wireless
6. A special identifier shared by BSSs that belong to the same ESS.
Access Point
ESSID (Extended Service Set Identifier)
Dial Return
FHSS (Frequency Hopping Spread Spectrum)
7. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
ESS (Extended Service Set Identifier)
Beacon Frame
A beacon frame
Active Scanning
8. 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
2.4 GHz
Channel Bonding
Radiation pattern
Stations
9. 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
Association
Ad Hoc
MIMO (Multiple Input-Multiple Output)
LEO (Low Earth Orbiting)
10. 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.
Hot Spot
LEO (Low Earth Orbiting)
Wireless Router
Site Survey
11. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
Fading
PAN (Personal Area Network)
Probe
B. 2.4 GHz
12. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
Fading
Bluetooth
Active Scanning
Radiation Pattern
13. 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)
2.4 GHz
Reflection
14. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
A beacon frame
DSSS (Direct-Sequence Spread Spectrum)
LEO (Low Earth Orbiting)
ESSID (Extended Service Set Identifier)
15. The signals made of electromagnetic energy that travel through the atmosphere.
5 GHz Band
Diffraction
Scattering
Wireless
16. A type of WLAN in which stations communicate with an access point and not directly with each other.
ESS (Extended Service Set Identifier)
2.4 GHz
Site Survey
Infrastructure WLAN
17. 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
Narrowband
MEO (Medium Earth Orbiting)
A beacon frame
18. A unique character string used to identify an access point on an 802.11 network.
Hot Spot
Range
SSID (Service Set Identifier)
LOS (Line of Sight)
19. 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
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Narrowband
Bluetooth
MEO (Medium Earth Orbiting)
20. 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?
2.4 GHz
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Radiation pattern
21. 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.
Access Point
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
SSID (Service Set Identifier)
MEO (Medium Earth Orbiting)
22. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Ad Hoc
Active Scanning
Reflection
23. 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.
Diffraction
Narrowband
Wireless Spectrum
Dial Return
24. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
Bluetooth
Spread Spectrum
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
2.4 GHz Band
25. 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.
Bluetooth Special Interest Group (SIG)
GEO (Geosynchronous Orbit or Geostationary Orbit)
Channel Bonding
Roaming
26. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
Range
2.4 GHz
Radiation pattern
Multipath signals
27. 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.
MEO (Medium Earth Orbiting)
Established the credentials the wireless interface will use to communicate securely with the access point
Scattering
Beacon Frame
28. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
LOS (Line of Sight)
Access Point
Range
29. 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.
Infrastructure WLAN
FHSS (Frequency Hopping Spread Spectrum)
ESS (Extended Service Set Identifier)
2.4 GHz Band
30. 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.
Channel Bonding
RTS/CTS (Request to Send/Clear to Send)
2.4 GHz
Downlink
31. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
Beacon Frame
2.4 GHz
Geosynchronous orbit
Roaming
32. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
Hot Spot
Access Point
Scattering
Ad Hoc
33. A destination node must issue an acknowledgment for every packet that is received intact.
Stations
Wireless Spectrum
802.11 transmission requirement that contributes to its inefficiency
Frame aggregation - Channel bonding
34. A small (usually home) network composed of personal communications devices.
PAN (Personal Area Network)
B. 2.4 GHz
Bluetooth
WLAN
35. The process a wireless station undergoes to find an access point.
Dial Return
Active Scanning
RTS/CTS (Request to Send/Clear to Send)
canning
36. 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.
Fading
MIMO (Multiple Input-Multiple Output)
Passive Scanning
Active Scanning
37. 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
A beacon frame
5 GHz Band
Radiation Pattern
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
38. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
Multipath signals
Directional Antenna
Established the credentials the wireless interface will use to communicate securely with the access point
Wireless Router
39. Which type of satellites is used to provide satellite Internet access?
5 GHz
Geosynchronous orbit
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Active Scanning
40. 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
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
FHSS (Frequency Hopping Spread Spectrum)
Mobile Wireless
Fixed Wireless
41. 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)
Geosynchronous orbit
Mobile Wireless
FHSS (Frequency Hopping Spread Spectrum)
42. An end node on a network; used most often in the context of wireless networks.
Wireless Spectrum
Stations
2.4 GHz Band
Established the credentials the wireless interface will use to communicate securely with the access point
43. 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
PAN (Personal Area Network)
Wireless Spectrum
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
44. In _____ - a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.
ESSID (Extended Service Set Identifier)
RTS/CTS (Request to Send/Clear to Send)
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Narrowband
45. 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.
Site Survey
Wireless Broadband
Bluetooth Special Interest Group (SIG)
LOS (Line of Sight)
46. ISM Range - Radio frequency band that may experience home appliance interference - Unregulated radio frequency band.
2.4 GHz
MIMO (Multiple Input-Multiple Output)
2.4 GHz Band
Probe
47. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
Downlink
Radiation Pattern
ESSID (Extended Service Set Identifier)
FHSS (Frequency Hopping Spread Spectrum)
48. 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.
Bluetooth Special Interest Group (SIG)
Association
BSSID (Basic Service Set Identifier)
5 GHz Band
49. 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)
Fixed Wireless
Downlink
Narrowband
50. 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.
Wireless Spectrum
Diffraction
Fading
Association