QUESTION 21
The transmit power level on an 802.11a radio is configured for 25 mW. What is the corresponding value in decibels?
A. |
2.5 dBm |
B. |
3 dBm |
C. |
14 dBm |
D. |
18 dBm |
E. |
none of the above |
Correct Answer: C
QUESTION 22
Users complain about intermittent wireless connectivity issues. You see the following message on your Cisco WCS, corresponding the time the connectivity issues occurred.
AP ‘building-1-entrance’, interface ‘802.11b/g’ on Controller ‘10.1.1.2’. Noise threshold violated.
What do you do?
A. |
Increase the interference threshold from the default 10%. |
B. |
Use a spectrum analyzer to discover the noise source. |
C. |
Check the logs for rogues in the area, and turn on rogue mitigation. |
D. |
Increase the power of the APs in the entrance hall. |
Correct Answer: B
QUESTION 23
Which environmental phenomena can cause considerable degradation to your wireless signals?
A. |
multipath, reflection, scattering, refraction |
B. |
multipath, alpha particles, diversity, absorption |
C. |
multipath, cosmic radiation, free path loss, scattering |
D. |
multipath, convergence, refraction, gamma rays |
Correct Answer: A
QUESTION 24
You are working for a South American services integrator. Your customer has a working unified Cisco WLC solution in Costa Rica (-A domain). You need to integrate an office in Panama (-N domain); correct APs are already deployed for this domain. Which approach do you take?
A. |
Do nothing. These APs will work on the same Cisco WLC because the countries are neighbors. |
B. |
Change the APs in the Panama office to AIR-CAP3502E-N-K9, which have external antennae. |
C. |
Use the config domain add -N command on the Cisco WLC. |
D. |
Add the country code for Panama (PA) through the Cisco WLC web GUI. |
Correct Answer: D
QUESTION 25
Which role does the Wi-Fi Alliance fulfill regarding WLANs?
A. |
creates global interoperability for wireless channels and spectrum |
B. |
maintains and creates the protocol standards by which wireless devices work |
C. |
ensures that wireless products that are available to consumers provide the features that the products claim to have |
D. |
creates strict regulations |
Correct Answer: C
QUESTION 26
One of your customers is thinking of deploying wireless in a building. Which two items should you establish in a pre-site survey? (Choose two.)
A. |
the exact channels that should be used |
B. |
the agreed coverage areas for the design |
C. |
the access security arrangements for getting into the building |
D. |
the type of deployment (data-only service, voice service, or location services) |
E. |
sources of RF interference |
Correct Answer: BD
QUESTION 27
On AIR-CAP3500 Series APs, which AP mode allows you to intensively analyze the frequency spectrum and detect interferers?
|
Sniffer |
B. |
Monitor |
C. |
SE-Connect |
D. |
Analyzer |
E. |
Rogue Detector |
Correct Answer: C
QUESTION 28
Your site has already been surveyed at 5 GHz for 802.11n VoWLAN services. Which services can you add safely, without conducting an additional site survey? (Choose two.)
A. |
enhanced Layer 2 or Layer 3 security of the WLAN |
B. |
optional MFP client protection for Cisco Client Extensions Version 5 clients |
C. |
802.11n data services on the 2.4 GHz Frequency |
D. |
802.11n voice services on the 2.4 GHz Frequency |
E. |
new services (such as location) on both frequencies |
Correct Answer: AB
QUESTION 29
Which type of indoor Cisco AP should you deploy to make use of spatial multiplexing?
A. |
AIR-LAP1242AG |
B. |
AIR-BR1310G |
C. |
AIR-LAP1131AG |
D. |
AIR-LAP1252AG |
E. |
AIR-LAP1524AG |
Correct Answer: D
QUESTION 30
You are a wireless network administrator for a company that has installed a network that is based on Cisco WLC and uses Aironet 1140 Series APs. The clients are using the 2.4 GHz band and WPA TKIP for Layer 2 security. The president of the company reads a news article on the benefits of 802.11n and wants to deploy it at the office so that the company can use data rates of up to 150 Mb/s. What should you tell the president?
A. |
You need to change your Layer 2 security policy to WPA2 AES to achieve the 300 Mb/s data rate. |
B. |
You need to purchase different APs because the 1140 Series supports only up to 54 Mb/s. |
C. |
You need to change the client Layer 2 security to WPA2 TKIP. |
D. |
You need to change the client Layer 2 security to open. |
E. |
802.1n data rates are possible only on 5 GHz. |
F. |
802.11n data rates are possible with the current client Layer 2 security, but for a theoretical data rate of 300 Mb/s, you need to use channel bonding, which is not recommended on the 2.4 GHz band. |
Correct Answer: A
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