What feature(s) are most likely to be supported by 802.11 enterprise-class WLAN controllers? (Choose 4)

A. Link aggregation / port trunking

B. 802.1p and DSCP QoS

C. BGP and Frame Relay

D. Captive web portals

E. IGMP snooping

Given: XYZ Corporation is experiencing connectivity problems with their existing building-to-building bridge link. A concrete wall on the roof of one building is partially blocking the Fresnel Zone, and the connection is dropping many frames. The administrator moves the antenna to an area not obstructed by the concrete wall and then realizes the RF cable cannot reach the new location.

If an extension cable is added to move the antenna, what are the likely results?

A. The data throughput rate will increase because VSWR will decrease.

B. The Equivalent Isotropically Radiated Power (EIRP) will decrease.

C. The antenna's azimuth beamwidth will decrease.

D. The size of the Fresnel zone will increase.

E. The likelihood of a direct lightning strike will increase.

Given:

The center frequency of channel 1 in the 2.4 GHz ISM band is 2.412 GHz (2412 MHz).

What is the center frequency of channel 2?

A. 2.413 GHz

B. 2.417 GHz

C. 2.422 GHz

D. 2.432 GHz

E. 2.437 GHz

What term describes the effect of increasing the intensity of an RF wave with an antenna by focusing the energy in a specific direction?

A. Spatial Multiplexing

B. Active Amplification

C. Beam Compression

D. Passive Gain

E. Isotropic Radiation

As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area. What term describes the rate at which this expansion happens?

A. MIMO equalization

B. Inverse square law

C. Path spread phenomenon

D. Fresnel zone thinning

E. Ohm's law

What factors are likely to cause the greatest impact on the application layer throughput of an 802.11n client station in a 2.4 GHz HT BSS? (Choose three)

A. Use of WEP or TKIP for encryption instead of CCMP

B. Use of passphrase authentication instead of 802.1X/EAP authentication

C. Increasing the beacon interval from 100 to 200 (TUs)

D. RF interference from more than 10 nearby Bluetooth transmitters

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

F. Configuring the AP to perform off-channel IDS scans for rogue devices for 50 ms out of every 20 seconds

Given: You are being interviewed by ABC Company for employment as a wireless site survey engineer. The interviewing manager asks you what items should be included in a manual RF site survey report.

What answer would be accurate? (Choose two)

A. Itemized list of equipment, licenses, and support contracts required for the facility

B. RF heat map illustrating coverage and signal quality for each frequency band

C. Documentation noting physical security hazards in the RF coverage area

D. Documentation noting where each access point will be placed and how it will be mounted

E. Documentation noting how each WLAN user group will authenticate to the network

Which antenna types are commonly used by indoor Wi-Fi devices in a MIMO diversity implementation? (Choose two)

A. Dipole

B. Patch

C. Dish

D. Grid

E. Sector

Given: XYZ Company is planning to install a new 802.11 WLAN, but wants to upgrade its wired infrastructure first to provide the best user experience possible. XYZ 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 802.3af PoE.

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

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

B. The edge Ethernet switches will need to support 802.3at PoE in order to support both access points and VoIP phones.

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

802.11 APs.

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

Which features are incorporated in the 802.11-2007 specification and are recommend for robust WLAN client security? (Choose 2)

A. SSID hiding

B. CAPWAP with DTLS

C. 802.1X/EAP

D. CCMP cipher suite

E. IPSec VPN

F. MAC address whitelists