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