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