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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. DSSS systems support a maximum of __ APs in a co-located environment.
dish
semi
omni
3
2. Body of water - flat stretch of earth - and metal roofs are considered to be smooth surfaces that can cause ____path.
Multipath
Passive
RF
False
3. A sequence of hops in a FHSS system is referred to as a ____.
DSSS
Channel
Channels
power
4. The Fresnel Zone must be at least __% cleared of obstructions.
Multipath
Open
infrared
60
5. In Infrastructure mode a single access point (AP) together with all associated stations (STAs) is called a ____.
Diffraction
BSS
False
Time
6. 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
semi
IBSS (Independent Basic Service Set)
hidden
DSSS
7. ____ System Authentication is a secure method of client device authentication onto a WLAN.
power
Multipath
semi
Open
8. 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 ____.
60
Diffraction
Extended Service Set
semi
9. Part of the roaming process involves Implementing Mobile IP - Active Scanning - and ____ Scanning.
i
Passive
Channel
obstructions
10. The range of RF transmissions increases with greater transmitting ____ - not frequency.
64QAM
Open
Extended Service Set
power
11. The FCC deals with RF Output power limits - appropriate RF Frequency band use - and ____ of frequency bands.
BSS
licensing
semi
Multipath
12. 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.
QPSK
LEAP
Extended Service Set
60
13. The ____ node problem can be caused by interfering obstacles between clients.
Access
hidden
22
LEAP
14. The two RF spread spectrum technologies in the IEEE 802.11 standard is FHSS and ____.
DSSS
semi
Channel
Channels
15. On August 31 - 2000 - the FCC mandated that FHSS systems using fewer than 75 hops must have a maximum power output of ___ mW.
BSS
AP
GFSK
125
16. Yagi and Patch antennas are examples of ____-directional antennas.
omni
QPSK
Shared
semi
17. The 802.11 standard contains 2.4 GHz FHSS - 2.4 GHz DSSS - and ____.
GFSK
Diffraction
licensing
infrared
18. The units for relative power are dB and dB_.
i
Multipath
Channels
Multipath
19. T/F FHSS is inherently more secure than DSSS.
power
DSSS
False
GFSK
20. A parabolic ____ is one type of a highly directional antenna.
licensing
Channels
3
dish
21. The weather and future ____ should be considered when erecting a 2.4GHz WLAN outside antenna.
hidden
obstructions
3
Extended Service Set
22. Antenna diversity compensates for a wireless LAN problem called ____.
omni
Multipath
hidden
False
23. WEP keys are also known as ____ Secrets.
i
Shared
obstructions
60
24. The two types of WLAN scanning are active scanning and ____ scanning.
Open
3
hidden
Passive
25. A gain of +3dB yieds a power ratio of __.
dB
infrared
2:1
Multipath
26. To achieve 54 Mbps - 802.11a uses which type of data modulation?
licensing
infrared
RF
64QAM
27. MAC filters can be implemented on a WLAN on an ____ point or on a RADIUS server.
Passive
3
Open
Access
28. A loss of -10dB yields a power ratio of ____.
Channel
Multipath
1:10
64QAM
29. Dipole antennas are ____-directional antennas.
omni
infrared
GFSK
LEAP
30. Data modulation methods in DSSS systems are BPSK and ____.
omni
3
Beacon
QPSK
31. The spread spectrum FHSS exhibits resistance to narrowband __ interference by design.
Channel
RF
3
Access
32. The FHSS hopset can be determined by listening to traffic on each of the hopping ____.
GFSK
QPSK
Access
Channels
33. Bluetooth uses a type of data modulation called ____.
licensing
BSS
GFSK
60
34. Beacon frames are used for ____ synchronization and passing channel selection information.
power
Time
RF
AP
35. ____ is the data modulation method used in FHSS.
Passive
GFSK
64QAM
Passive
36. WLAN client-side devices use the security features EAP and ____.
DSSS
RF
Shared
LEAP
37. All access points transmit a ____ management frame at a fixed interval.
Beacon
dish
QPSK
GFSK
38. Before going to sleep - a wireless station must notify the ____ of its intention to sleep.
AP
power
64QAM
IBSS (Independent Basic Service Set)
39. Insertion loss on WLAN splitters are measured in what units?
dB
Passive
omni
semi
40. DSSS uses channels that are ___ MHz wide to transmit data in the 2.4 GHz ISM band.
GFSK
22
Open
RF