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Test your basic knowledge |
Wireless Certification
Start Test
Study First
Subjects
:
it-skills
,
certifications
Instructions:
Answer 40 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. Body of water - flat stretch of earth - and metal roofs are considered to be smooth surfaces that can cause ____path.
Access
GFSK
GFSK
Multipath
2. Insertion loss on WLAN splitters are measured in what units?
dB
3
Shared
Channel
3. The units for relative power are dB and dB_.
Diffraction
Shared
i
3
4. The weather and future ____ should be considered when erecting a 2.4GHz WLAN outside antenna.
obstructions
False
Open
GFSK
5. MAC filters can be implemented on a WLAN on an ____ point or on a RADIUS server.
QPSK
dB
2:1
Access
6. WEP keys are also known as ____ Secrets.
Shared
Open
64QAM
semi
7. ____ is the data modulation method used in FHSS.
GFSK
2:1
Passive
Extended Service Set
8. A sequence of hops in a FHSS system is referred to as a ____.
GFSK
Channel
obstructions
QPSK
9. Yagi and Patch antennas are examples of ____-directional antennas.
Passive
BSS
Channel
semi
10. On August 31 - 2000 - the FCC mandated that FHSS systems using fewer than 75 hops must have a maximum power output of ___ mW.
obstructions
QPSK
125
64QAM
11. The FHSS hopset can be determined by listening to traffic on each of the hopping ____.
Passive
Multipath
125
Channels
12. WLAN client-side devices use the security features EAP and ____.
power
LEAP
Multipath
2:1
13. A change in the direction and intensity of a group of waves after passing by an obstacle or the bending of waves around an object is referred to as ____.
Open
Diffraction
125
Passive
14. The two types of WLAN scanning are active scanning and ____ scanning.
Passive
Multipath
Open
64QAM
15. Data modulation methods in DSSS systems are BPSK and ____.
GFSK
60
64QAM
QPSK
16. The ____ node problem can be caused by interfering obstacles between clients.
dish
Channel
omni
hidden
17. Dipole antennas are ____-directional antennas.
BSS
omni
False
Access
18. To achieve 54 Mbps - 802.11a uses which type of data modulation?
Time
64QAM
BSS
hidden
19. Beacon frames are used for ____ synchronization and passing channel selection information.
semi
AP
licensing
Time
20. A parabolic ____ is one type of a highly directional antenna.
Extended Service Set
Channels
60
dish
21. An ____ is a set of one or more interconnected BSSs and integrated local area networks (LANs) that appear as a single BSS to the logical link control layer at any station associated with one of those BSSs.
power
Channel
False
Extended Service Set
22. Bluetooth uses a type of data modulation called ____.
Extended Service Set
Shared
125
GFSK
23. Antenna diversity compensates for a wireless LAN problem called ____.
Multipath
Passive
GFSK
1:10
24. With 802.11 it is possible to create an ad-hoc network of client devices without a controlling Access Point called an ____ - in which case the SSID is chosen by the client device that starts the network - and broadcasting of the SSID is performed in
IBSS (Independent Basic Service Set)
AP
GFSK
Shared
25. Before going to sleep - a wireless station must notify the ____ of its intention to sleep.
Channels
1:10
AP
Open
26. Part of the roaming process involves Implementing Mobile IP - Active Scanning - and ____ Scanning.
Passive
22
obstructions
power
27. ____ System Authentication is a secure method of client device authentication onto a WLAN.
Open
Access
60
Multipath
28. A loss of -10dB yields a power ratio of ____.
Open
1:10
Diffraction
Shared
29. The Fresnel Zone must be at least __% cleared of obstructions.
i
Shared
60
Passive
30. All access points transmit a ____ management frame at a fixed interval.
Beacon
QPSK
hidden
GFSK
31. The FCC deals with RF Output power limits - appropriate RF Frequency band use - and ____ of frequency bands.
licensing
60
hidden
omni
32. DSSS uses channels that are ___ MHz wide to transmit data in the 2.4 GHz ISM band.
Diffraction
22
2:1
BSS
33. The range of RF transmissions increases with greater transmitting ____ - not frequency.
Time
power
DSSS
obstructions
34. DSSS systems support a maximum of __ APs in a co-located environment.
omni
AP
Beacon
3
35. The 802.11 standard contains 2.4 GHz FHSS - 2.4 GHz DSSS - and ____.
22
semi
infrared
3
36. T/F FHSS is inherently more secure than DSSS.
64QAM
LEAP
Open
False
37. In Infrastructure mode a single access point (AP) together with all associated stations (STAs) is called a ____.
dB
GFSK
BSS
RF
38. The spread spectrum FHSS exhibits resistance to narrowband __ interference by design.
RF
DSSS
Passive
125
39. The two RF spread spectrum technologies in the IEEE 802.11 standard is FHSS and ____.
DSSS
125
dB
QPSK
40. A gain of +3dB yieds a power ratio of __.
2:1
dB
60
DSSS