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