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