CWNA-106 Online Practice Questions and Answers

What is a common feature of an 802.11 WLAN client utility? (Choose 2)

A. Real-time retry monitor

B. AP Signal strength meter

C. Spectrum analyzer utility

D. VLANconfiguration

E. Linkstatistics display

What statements describe industry practices for communication protocols between WLANcontrollers and controller-based APs? (Choose 2)

A. All vendors use the same protocol so that APs will interoperate with WLAN controllers from other vendors.

B. Some vendors use proprietary protocols, and some vendorsuse protocols based on public standards like RFCs.

C. For most vendors, the controller-based APs maintain data and control tunnels with at least two controllers for immediate failover and redundancy.

D. All vendors support at least one L2 or L3 broadcastprotocol for controller discovery by controller-based APs.

E. All vendors recommend using L2 (instead of L3) controller discovery and tunneling protocols in large enterprises.

Your consulting firm has recently been hired to complete a site survey for a company. Your engineers use predictive modeling software forsurveying, but the company insists on a pre- deployment site visit.

What task should be performed as part of the pre-deployment visit to prepare for a predictive survey?

A. Evaluatethe building materials at ABC's facility and confirm that the floor plandocuments are consistent with the actual building.

B. Test several antenna types connected to the intended APs for use in the eventual deployment.

C. Collect information about the company's security requirements and the current configuration of their RADIUS and user database servers.

D. Install at least one AP on each side of the exterior walls to test for co-channel interference through these walls.

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.

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

How is throughput capacity scaled in a single channel architecture (SCA) WLAN system?

A. By increasing transmit power and placing APs that are on a single channel farther from one another.

B. By adding more SSIDs to existing APs to spread users across different contention domains.

C. By adding non-overlapping channel layers through the addition of more APs.

D. By using downlink data compression and uplink flow control at the AP.

What answer correctly completes the following sentence?

____________ and physical carrier sense functions are used to determine if the wireless medium is busy.

A. Backup

B. Passive

C. Virtual

D. Active

The 802.11 protocol specifies a fundamentalchannel access method that is required for all stations and is available for use in all IBSS and BSS networks.

What is this fundamental channel access method called?

A. DCF

B. PCF

C. HCF

D. EDCAF

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

Whatnetwork functions are performed by the enterprise-class WNMS?

A. Radio management, fast roaming, key caching, and other centralized control plane operations

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

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

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