Pass the CWNP CWNA CWNA-107 Questions and answers with CertsForce

Viewing page 2 out of 5 pages
Viewing questions 11-20 out of questions
Questions # 11:

A WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB loss. If the cable is connected to an antenna with 9dBi gain, what is the EIRP at the antenna element?

Options:

A.

23 dBm


B.

26 dBm


C.

13 dBm


D.

10 dBm


Expert Solution
Questions # 12:

A client STA must choose the best AP for connectivity. As part of the evaluation, it must verify compatible data rates. What can the client STA use to verify that an AP supports the same data rates that it supports?

Options:

A.

Beacon frames transmitted by the AP


B.

Data frames sent between the AP and current client STAs


C.

Authentication frames transmitted by the other client STAs


D.

Probe request frames transmitted by other client STAs


Expert Solution
Questions # 13:

What security method is commonly used for VoIP handsets when the infrastructure does not support OKC or FT roaming?

Options:

A.

WPA2-Enterprise with EAP-TTLS


B.

WPA2-Enterprise with EAP-TLS


C.

WPA2-Enterprise with PEAP


D.

WPA2 -Personal


Expert Solution
Questions # 14:

When a client station sends a broadcast probe request frame with a wildcard SSID, how do APs respond?

Options:

A.

For each probe request frame, only one AP may reply with a probe response.


B.

Each AP responds in turn after preparing a probe response and winning contention.


C.

Each AP checks with the DHCP server to see if it can respond and then acts accordingly.


D.

After waiting a SIFS, all APs reply at the same time with a probe response.


Expert Solution
Questions # 15:

You were previously onsite at XYZ’s facility to conduct a pre-deployment RF site survey. The WLAN has been deployed according to your recommendations and you are onsite again to perform a post-deployment validation survey.

When performing this type of post-deployment RF site survey voice over Wi-Fi, what is an action that must be performed?

Options:

A.

Spectrum analysis to locate and identify RF interference sources.


B.

Frequency-band hopping analysis to detect improper RF channel implementations.


C.

Protocol analysis to discover channel use on neighboring APs.


D.

Application analysis with an active phone call on an VoWiFi handset.


Expert Solution
Questions # 16:

You are installing AP to be used by 23 laptops. All laptops will connect on the 5 GHz frequency band. A neighbor network uses channels 1 and 6. What channel should be used for this AP and why?

Options:

A.

Channel 6, because it is always best to use this channel


B.

A 5 GHz channel, because channels 1 and 6 are 2.4 GHz channels they have no impact on the decision


C.

Channel 1, because it is best to use the channel with the lowest frequency


D.

Channel 11, because channels 1 and 6 are in use nearby


Expert Solution
Questions # 17:

An IEEE 802.11 amendment is in the daft state. What impact does this draft amendment have on the 802.11 standard?

Options:

A.

No impact: Until an amendment is ratified, it does not become part of the standard.


B.

Devices will be released based on the draft amendment and the draft amendment features are part of the standard.


C.

The standard is changed to reflect the new capabilities as soon as an amendment enters the draft stage.


D.

No impact: Draft amendments do not become part of the standard until a working group is formed.


Expert Solution
Questions # 18:

What factor is likely to cause the least impact on the application layer throughput of an 802.11n client station in a 2.4 GHz HT BSS?

Options:

A.

Increasing or decreasing the number of spatial streams in use by the client station and AP


B.

Implementation of several other clients in the same BSS using 802.11 g radios


C.

Implementing Fast BSS Transition (FT) for roaming


D.

RF interface from more than 10 nearby Bluetooth transmitters


Expert Solution
Questions # 19:

ABC Company is planning to install a new 802.11ac WLAN, but wants to upgrade its wired infrastructure first to provide the best user experience possible. ABC Company has hired you to perform the RF site survey. During the interview with the network manager, you are told that the new Ethernet edge switches will support VoIP phones and 802.11 access points, both using 802.3 PoE.

After hearing this information, what immediate concerns do you note?

Options:

A.

The power budget in the edge switches must be carefully planned and monitored based on the number of supported PoE devices.


B.

The edge Ethernet switches should support Ether-channel to get the best results out of the network.


C.

VoIP phones and 802.11 access points should not be powered by the same edge switch due to distortion.


D.

If the switches are in optimal locations for VoIP phones, they are likely to be suboptimal locations for 802.11 APs


Expert Solution
Questions # 20:

The BSA of an AP covers the area used by the sales and marketing department. Thirty-five stations operate in this space. The users indicate that they need more throughput and all stations are 5 GHz capable 802.11ac clients. The current AP configuration uses 20 MHz channels in both 2.4 GHz and 5 GHz. What is the least expensive solution available for increasing throughput for these users without implementing configuration options that are not recommended?

Options:

A.

Use a 160 MHz channel on the 5 GHz radio


B.

Use a 40 MHz channel on the 5 GHz radio


C.

Install a second AP in the coverage area


D.

Use a 40 MHz channel on the 2.4 GHz radio


Expert Solution
Viewing page 2 out of 5 pages
Viewing questions 11-20 out of questions