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 small (usually home) network composed of personal communications devices.
PAN (Personal Area Network)
Geosynchronous orbit
Wireless Broadband
Scattering
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)
Diffraction
Multipath signals
802.11 transmission requirement that contributes to its inefficiency
Access Point
3. Which type of satellites is used to provide satellite Internet access?
Diffraction
Wireless
Geosynchronous orbit
Satellite Return
4. 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.
iwconfig
Directional Antenna
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Mobile Wireless
5. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
Radiation pattern
Fixed Wireless
Wireless Router
Hot Spot
6. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
2.4 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?
Probe
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
7. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
Access Point
Hot Spot
2.4 GHz Band
MEO (Medium Earth Orbiting)
8. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
5 GHz Band
Wireless Spectrum
iwconfig
Multipath signals
9. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
Passive Scanning
Transponder
Reassociation
A beacon frame
10. An access point that provides routing functions.
RTS/CTS (Request to Send/Clear to Send)
Wireless Router
BSSID (Basic Service Set Identifier)
5 GHz Band
11. 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.
Wireless
Diffraction
2.4 GHz Band
Wireless Broadband
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.
Access Point
802.11 transmission requirement that contributes to its inefficiency
LOS (Line of Sight)
DSSS (Direct-Sequence Spread Spectrum)
13. 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.
GEO (Geosynchronous Orbit or Geostationary Orbit)
Stations
LEO (Low Earth Orbiting)
DSSS (Direct-Sequence Spread Spectrum)
14. 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.
Ad Hoc
Infrastructure WLAN
A beacon frame
Site Survey
15. 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
Access Point
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
BSSID (Basic Service Set Identifier)
16. 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
Bluetooth Special Interest Group (SIG)
Reflection
Probe
Ad Hoc
17. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
Mobile Wireless
Ad Hoc
Diffraction
Range
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
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
In the 802.11 standard - IEEE specifies what type of access method?
MEO (Medium Earth Orbiting)
19. A group of access points and associated stations (or basic service sets) connected to the same LAN.
Wireless Spectrum
ESS (Extended Service Set Identifier)
Active Scanning
Established the credentials the wireless interface will use to communicate securely with the access point
20. 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
GEO (Geosynchronous Orbit or Geostationary Orbit)
Wireless Router
canning
21. 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)
Infrastructure WLAN
Wireless Gateway
Wireless Spectrum
22. 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.
B. 2.4 GHz
Fading
Spread Spectrum
Wireless Broadband
23. The signals made of electromagnetic energy that travel through the atmosphere.
Wireless
Downlink
5 GHz Band
GEO (Geosynchronous Orbit or Geostationary Orbit)
24. 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.
Omnidirectional Antenna
Active Scanning
Passive Scanning
Reassociation
25. This type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.
Probe
Hot Spot
LOS (Line of Sight)
Bluetooth
26. 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
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
SSID (Service Set Identifier)
Bluetooth
27. 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.
Ad Hoc
RTS/CTS (Request to Send/Clear to Send)
Geosynchronous orbit
Directional Antenna
28. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
Spread Spectrum
Radiation Pattern
Fading
Wireless Gateway
29. 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
Bluetooth Special Interest Group (SIG)
Satellite Return
Diffraction
30. A destination node must issue an acknowledgment for every packet that is received intact.
Satellite Return
Diffraction
Reassociation
802.11 transmission requirement that contributes to its inefficiency
31. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
iwconfig
Omnidirectional Antenna
Downlink
802.11 transmission requirement that contributes to its inefficiency
32. 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.
Directional Antenna
Passive Scanning
Channel Bonding
Transponder
33. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
Active Scanning
SSID (Service Set Identifier)
Access Point
Probe
34. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
Hot Spot
Transponder
Established the credentials the wireless interface will use to communicate securely with the access point
Wireless Spectrum
35. 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
Established the credentials the wireless interface will use to communicate securely with the access point
RTS/CTS (Request to Send/Clear to Send)
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)
36. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
A beacon frame
Passive Scanning
RTS/CTS (Request to Send/Clear to Send)
Fixed Wireless
37. A special identifier shared by BSSs that belong to the same ESS.
ESSID (Extended Service Set Identifier)
Wireless Broadband
Geosynchronous orbit
Hot Spot
38. An access point that provides routing functions and is used as a gateway.
Wireless Gateway
Downlink
B. 2.4 GHz
ESSID (Extended Service Set Identifier)
39. A connection from an orbiting satellite to an Earth -based receiver.
Wireless Broadband
Radiation pattern
Diffraction
Downlink
40. In IEEE terminology - the identifier for a BSS (basic service set)
Wireless Router
Dial Return
Radiation pattern
BSSID (Basic Service Set Identifier)
41. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.
Range
Frame aggregation - Channel bonding
Stations
Probe
42. 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)
B. 2.4 GHz
iwconfig
Wireless
43. 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
Range
PAN (Personal Area Network)
Stations
44. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
SSID (Service Set Identifier)
Beacon Frame
WLAN
Channel Bonding
45. An end node on a network; used most often in the context of wireless networks.
Stations
Wireless
2.4 GHz
Infrastructure WLAN
46. 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
Infrastructure WLAN
Wireless Spectrum
802.11 transmission requirement that contributes to its inefficiency
iwconfig
47. The process a wireless station undergoes to find an access point.
Channel Bonding
canning
Diffraction
LOS (Line of Sight)
48. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
DSSS (Direct-Sequence Spread Spectrum)
Fading
Beacon Frame
Radiation pattern
49. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
Access Point
Bluetooth Special Interest Group (SIG)
Range
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
50. 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
Wireless
MEO (Medium Earth Orbiting)
Downlink
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)