CWNA-106 Online Practice Questions and Answers

When using an RF splitter to connect one transceiver to sector antennas loss is incurred. What is this loss called?

A. Conversion loss

B. Through loss

C. Active loss

D. Intentional loss

What factors influence the distance that an RF signal can be effectively received? (Choose 3)

A. Transmitting station's power source

B. Receiving station's radio sensitivity

C. Free Space Path Loss

D. MAC layer encryption

E. Transmitting station'soutput power

F. Temperature in the Fresnel zone

What facts are true regarding controllers and APs in a Split MAC architecture? (Choose 2)

A. An IP tunnel is established between the AP and controller for AP management and control functions.

B. Using centralized data forwarding, APs never tag Ethernet frames with VLAN identifiers or 802.1p CoS.

C. With 802.1X/EAP security, the AP acts as the supplicant and the controller acts as the authenticator.

D. Management and data frame types must be processed locally by the AP, while control frame types must be sent to the controller.

E. In a distributed data forwarding model, the AP handles frame encryption and decryption.

What HT technology requires MIMO support on both the transmitter and receiver?

A. Spatial multiplexing

B. Shot guard intervals

C. Maximal ratio combining

D. Orthogonal Frequency Division Multiplexing

As you prepare for a site survey in a multi-floor corporate office, you have learned about several wireless devices that support connection-oriented, real-time applications. These applications are sensitive to service interruptions and require excellent signal quality, low latency, and low loss. For that reason, it is important to identify sources of RF interference as well as building characteristics that would cause RF blockage or dead spots.

What systems or environmental characteristics are most likely to cause interference or RF blockage and disrupt service for these applications? (Choose 2)

A. Microwave ovens

B. Narrow hallways

C. Elevator shafts

D. RFID chokepoints

E. Workspace dividers

ABC Company has thousands of Wi-Fi users accessing their network ona daily basis. Their WLAN consists of 700 access points, 6 WLAN controllers, and a wireless network management system.

What network functions are performed by the enterprise-class WNMS? (Choose 3)

A. RF pre-deployment planning and post-deployment reporting of access point locations on a floor plan

B. Performance and security monitoring of WLAN controllers with alarms and notifications for administrative staff

C. Radio management, fast roaming, key caching, and othercentralized control plane operations

D. Centralized bridging of guest data traffic and application of firewall and QoS policies to data

E. Management of WLAN controller configuration and provisioning of firmware updates

F. Generating, encrypting, and decrypting 802.11 frames and collecting RF radio data.

You have been sent as a consultant to a customer site that is experiencing problems with some 2.4 GHz clients on their 802.11a/g/n/ac network. After collecting informationfrom the company about the problem, your initial troubleshooting step is to find a client device experiencing performance problems and observe its 802.11 frame exchanges in a protocol analyzer. The retransmission rate for that client is 65% instead of thecompany's baseline, which is 9%.

Based on this information, what troubleshooting step should follow to isolate the problem?

A. Check theframe decodes in the protocol analyzer and look for an excessive number of deauthentication frames.

B. Evaluate the client's operating frequency band with a spectrum analyzer, looking for a high noise floor or interference sources.

C. Utilize a laptop-based site survey and planning tool to create a predictive model of the optimal AP placement in the customer's facility.

D. With a protocol analyzer, identify the client's roaming threshold settings and reassociation behavior.

E. Install Wi-Fi endpoint security and reporting software on the client device to monitor and log the retransmission behavior.

What causes of hidden nodes within a BSS would be more likely lead to an increase in collisions and retries? (Choose 2)

A. Data frames too large for the physical environment

B. Client stationsbroadcasting with too much power

C. Access points broadcasting with too little power

D. Client stations too close in proximity to each other

E. Obstacles between client stations causing attenuation

F. Large 802.11 cells with physically distributed stations

Which unit of measurement is an absolute unit that is used to quantify power levels on a linear scale?

A. dBm

B. SNR

C. RSSI

D. VSWR

What word describes the bending of an RF signal as it passes through a medium of a varying densityfrom that of free space?

A. Diffraction

B. Reflection

C. Refraction

D. Diffusion

E. Scattering