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