SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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 ______ ______ 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.
Dial Return
Geosynchronous orbit
Directional Antenna
Beacon Frame
2. 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
Wireless Router
Bluetooth Special Interest Group (SIG)
MEO (Medium Earth Orbiting)
3. 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.
Satellite Return
Geosynchronous orbit
Access Point
Stations
4. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
iwconfig
Scattering
A beacon frame
Established the credentials the wireless interface will use to communicate securely with the access point
5. This type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.
2.4 GHz
MEO (Medium Earth Orbiting)
LOS (Line of Sight)
MIMO (Multiple Input-Multiple Output)
6. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
FHSS (Frequency Hopping Spread Spectrum)
Bluetooth
Access Point
Wireless Spectrum
7. 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
Satellite Return
Wireless
MIMO (Multiple Input-Multiple Output)
Range
8. 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.
Association
Dial Return
iwconfig
Geosynchronous orbit
9. A type of WLAN in which stations communicate with an access point and not directly with each other.
SSID (Service Set Identifier)
MEO (Medium Earth Orbiting)
Beacon Frame
Infrastructure WLAN
10. 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.
Range
SSID (Service Set Identifier)
Wireless Broadband
5 GHz Band
11. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
Omnidirectional Antenna
Probe
RTS/CTS (Request to Send/Clear to Send)
FHSS (Frequency Hopping Spread Spectrum)
12. 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)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Hot Spot
Diffraction
Radiation Pattern
13. 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
Scattering
iwconfig
Frame aggregation - Channel bonding
14. Regulated radio frequency band - 1/3rd range of 802.11b or g - Usually found in corporate environments.
5 GHz
FHSS (Frequency Hopping Spread Spectrum)
Active Scanning
802.11 transmission requirement that contributes to its inefficiency
15. 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
MIMO (Multiple Input-Multiple Output)
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Mobile Wireless
16. 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
Mobile Wireless
Satellite Return
In the 802.11 standard - IEEE specifies what type of access method?
Association
17. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
BSSID (Basic Service Set Identifier)
Stations
Multipath signals
ESSID (Extended Service Set Identifier)
18. The process a wireless station undergoes to find an access point.
canning
Hot Spot
iwconfig
Bluetooth Special Interest Group (SIG)
19. 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.
Fading
LOS (Line of Sight)
Site Survey
LEO (Low Earth Orbiting)
20. In IEEE terminology - the identifier for a BSS (basic service set)
Reassociation
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Spread Spectrum
BSSID (Basic Service Set Identifier)
21. 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.
RTS/CTS (Request to Send/Clear to Send)
Beacon Frame
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 Router
22. A group of access points and associated stations (or basic service sets) connected to the same LAN.
Wireless Router
RTS/CTS (Request to Send/Clear to Send)
ESS (Extended Service Set Identifier)
In the 802.11 standard - IEEE specifies what type of access method?
23. Omnidirectional
iwconfig
Hot Spot
5 GHz Band
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
24. 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
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
MEO (Medium Earth Orbiting)
BSSID (Basic Service Set Identifier)
Multipath signals
25. An end node on a network; used most often in the context of wireless networks.
Stations
Directional Antenna
Range
Downlink
26. 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.
Dial Return
Scattering
Beacon Frame
Reassociation
27. A special identifier shared by BSSs that belong to the same ESS.
iwconfig
ESSID (Extended Service Set Identifier)
Roaming
Range
28. A small (usually home) network composed of personal communications devices.
Reflection
Wireless Router
Fading
PAN (Personal Area Network)
29. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.
Diffraction
Wireless Broadband
Range
2.4 GHz Band
30. 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.
SSID (Service Set Identifier)
Transponder
Infrastructure WLAN
Passive Scanning
31. 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 Broadband
Narrowband
Downlink
Wireless Spectrum
32. 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)
MEO (Medium Earth Orbiting)
Association
Wireless Router
33. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
ESSID (Extended Service Set Identifier)
Narrowband
Established the credentials the wireless interface will use to communicate securely with the access point
B. 2.4 GHz
34. 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
Ad Hoc
WLAN
Bluetooth
Reflection
35. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
ESS (Extended Service Set Identifier)
LEO (Low Earth Orbiting)
Radiation Pattern
DSSS (Direct-Sequence Spread Spectrum)
36. 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
Fixed Wireless
Downlink
iwconfig
LOS (Line of Sight)
37. A unique character string used to identify an access point on an 802.11 network.
SSID (Service Set Identifier)
ESS (Extended Service Set Identifier)
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Narrowband
38. 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
GEO (Geosynchronous Orbit or Geostationary Orbit)
LEO (Low Earth Orbiting)
Wireless Router
Satellite Return
39. 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.
Dial Return
canning
Passive Scanning
DSSS (Direct-Sequence Spread Spectrum)
40. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
Wireless Gateway
5 GHz
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Ad Hoc
41. Which type of satellites is used to provide satellite Internet access?
PAN (Personal Area Network)
LEO (Low Earth Orbiting)
Roaming
Geosynchronous orbit
42. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Hot Spot
MIMO (Multiple Input-Multiple Output)
Channel Bonding
43. 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.
2.4 GHz Band
Frame aggregation - Channel bonding
In the 802.11 standard - IEEE specifies what type of access method?
Beacon Frame
44. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
Reflection
WLAN
MEO (Medium Earth Orbiting)
Active Scanning
45. 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.
BSSID (Basic Service Set Identifier)
iwconfig
Omnidirectional Antenna
Passive Scanning
46. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
Radiation pattern
Association
Beacon Frame
MEO (Medium Earth Orbiting)
47. 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.
Satellite Return
Passive Scanning
Downlink
5 GHz Band
48. 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.
In the 802.11 standard - IEEE specifies what type of access method?
2.4 GHz Band
Site Survey
Dial Return
49. 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
Wireless Gateway
ESS (Extended Service Set Identifier)
Roaming
50. 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
Downlink
LEO (Low Earth Orbiting)
SSID (Service Set Identifier)