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