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