CWNA-106 Certified Wireless Network Administrator Exam Set 3

What factors will have the most significant impact on the amount of wireless bandwidth available to each station within a BSS? (Choose 2)


Options are :

  • The power management settings in the access point’s beacons
  • The presence of co-located (10m away) access points on non-overlapping channels
  • The number of clientstations associated to the BSS
  • The data rates at which nearby client stations are transmitting and receiving data

Answer : The number of clientstations associated to the BSS The data rates at which nearby client stations are transmitting and receiving data

What statements accurately describe the RF cables and connectors that are used in an 802.11 WLAN system? (Choose 3)


Options are :

  • 75 and 125 ohms are the typical impedances of 802.11 WLAN connectors
  • Two RF connectors of the same type (e.g. SMA), manufactured by different companies, may vary in specifications.
  • RF cables have upper and lower frequency range specifications.
  • Every RF connector causes insertion loss.

Answer : Two RF connectors of the same type (e.g. SMA), manufactured by different companies, may vary in specifications. RF cables have upper and lower frequency range specifications. Every RF connector causes insertion loss.

Which of the following frequency ranges are specified for use by IEEE 802.11 radios? (Choose all that apply.)


Options are :

  • 5.15 – 5.25 GHz
  • 902 - 928 MHz
  • 5.470 – 5.725 GHz
  • 2.4000 – 2.4835 GHz
  • 5.725 – 5.875 GHz

Answer : 5.15 – 5.25 GHz 5.470 – 5.725 GHz 2.4000 – 2.4835 GHz 5.725 – 5.875 GHz

PW0-071 Certified Wireless Technology Specialist Sales Exam Set 3

The IEEE 802.11a/n/ac physical layer technologies utilize the 5 GHz frequency band. What is true of the channels in this frequency spectrum?


Options are :

  • 11 channels are available worldwide.
  • DFS may be required in some regulatory domains on some channels.
  • Regulatory domains worldwide require DFS and TPC in all these channels.
  • 14 channels are available worldwide.

Answer : DFS may be required in some regulatory domains on some channels.

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


Options are :

  • With 802.1X/EAP security, the AP acts as the supplicant and the controller acts as the authenticator.
  • Management and data frame types must be processed locally by the AP, while control frame types must be sent to the controller.
  • Using centralized data forwarding, APs never tag Ethernet frames with VLAN identifiers or 802.1pCoS.
  • In a distributed data forwarding model, the AP handles frame encryption and decryption.
  • An IP tunnel is established between the AP and controller for AP management and control functions.

Answer : In a distributed data forwarding model, the AP handles frame encryption and decryption. An IP tunnel is established between the AP and controller for AP management and control functions.

What are two channel modes specified by the 802.11n (High Throughput) PHY? (Choose 2)


Options are :

  • 20/40 MHz
  • 20 MHz
  • 40/80 MHz
  • 22 MHz

Answer : 20/40 MHz 20 MHz

PW0-105 Certified Wireless Network Administrator CWNA Exam Set 3

What distinguishes an independent basic service set (IBSS) from an infrastructure basic service set (BSS)?


Options are :

  • An IBSS does not require beacon frames, but a BSS does.
  • An IBSS does not have a distribution system (DS), but a BSS does.
  • An IBSS does not support 802.11authentication or association, but a BSS does.
  • An IBSS does not support any 802.11ac enhancements, but a BSS does.

Answer : An IBSS does not have a distribution system (DS), but a BSS does.

In an 802.11n 2.4 GHz BSS, what prevents each station from using the full network bandwidth (e.g. 130 Mbps) for user data throughput when multiple clients are actively exchanging data with the AP? (Choose 2)


Options are :

  • The DCF and EDCA coordination functions require backoff algorithms
  • Half of the bandwidth is allocated to uplink traffic and half to downlink traffic.
  • WLAN devices cannot detect collisions and must receive positive frame acknowledgment.
  • Radio receiver hardware cannot process data as quickly as it can be transmitted.

Answer : The DCF and EDCA coordination functions require backoff algorithms WLAN devices cannot detect collisions and must receive positive frame acknowledgment.

When a client moves to a new BSS within an ESS, what steps are part of the 802.11 reassociation process? (Choose 2)


Options are :

  • The client and new access point create unicast encryption keys.
  • The client station transmits a Reassociation Request frame to its current access point.
  • The current access point informs the IP gateway of the reassociation.
  • The current access point triggers the client’s reassociation service.
  • The new access point transmits a Reassociation Response to the client station with a status value.

Answer : The client and new access point create unicast encryption keys. The new access point transmits a Reassociation Response to the client station with a status value.

PW0-104 Wireless LAN Administration Certified Practice Exam Set 5

The center frequency of channel 1 in the 2.4 GHz band is 2.412 GHz (2412 MHz).What is the center frequency of channel 4?


Options are :

  • 2.427 GHz
  • 2.413 GHz
  • 2.417 GHz
  • 2.422 GHz

Answer : 2.427 GHz

The IEEE 802.11-2012 standard requires VHT capable devices to be backward compatible with devices using which other 802.11 physical layer specifications (PHYs)? (Choose 2)


Options are :

  • HR/DSSS
  • OFDM
  • HT
  • ERP-PBCC

Answer : OFDM HT

In addition to throughput enhancements, what other improvements does a dual-band 802.11ac AP provide when compared with 802.11a/g APs? (Choose 2


Options are :

  • Better link reliability between 802.11a/b/g client devices and 802.11ac APs
  • Increases in receive sensitivity enhance RTLS location accuracy
  • Improves service quality for real-time applications at greater distances
  • Introduces “fast transition” roaming protocols for VoWiFi phones

Answer : Better link reliability between 802.11a/b/g client devices and 802.11ac APs Improves service quality for real-time applications at greater distances

PW0-104 Wireless LAN Administration Practice Exam Set 1

The OSI model is a 7-layer model for understanding the functions of a communication system. What OSI sublayers are specifically addressed by the IEEE 802.11-2012 standard? (Choose 2)


Options are :

  • PLCP
  • PPDU
  • MAC
  • Network

Answer : PLCP MAC

What features are most often configurable within 802.11 WLAN client utilities? (Choose 2)


Options are :

  • Power management
  • AESkey and block size
  • Frame generator utility
  • Co-channel interference threshold

Answer : Power management AESkey and block size

The client devices that connect to your network include a mix of dual-band 802.11n and 802.11ac, single-band 802.11b/g/n, and some 802.11a/g/n. Your access points are configured with the same SSID on both the 2.4 and 5 GHz bands. The APs are also configured to prioritize client connectivity to 5 GHz.How does an AP perform band steering to encourage clients to use 5 GHz?


Options are :

  • The AP may allow an 802.11 association with the client in the 2.4 GHz band, then send unicast channel switch announcements to the client announcing the 5 GHz channel as the new channel.
  • When the client sends a probe request in the 2.4 GHz band, the AP may reply with information about the 5 GHz BSS.
  • The AP may allow an 802.11 association with the client in the 2.4 GHz band, then the AP may perform a transparent client handoff by transferring the client’s MAC address to the 5 GHz radio.
  • The AP may ignore the initial probe requests or 802.11 authentication requests sent in the 2.4 GHz band by dual-band clients

Answer : The AP may ignore the initial probe requests or 802.11 authentication requests sent in the 2.4 GHz band by dual-band clients

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


Options are :

  • Radio management, fast roaming, key caching, and othercentralized control plane operations
  • Centralized bridging of guest data traffic and application of firewall and QoS policies to data
  • Performance and security monitoring of WLAN controllers with alarms and notifications for administrative staff
  • Management of WLAN controller configuration and provisioning of firmware updates
  • RF pre-deployment planning and post-deployment reporting of access point locations on a floor plan

Answer : Performance and security monitoring of WLAN controllers with alarms and notifications for administrative staff Management of WLAN controller configuration and provisioning of firmware updates RF pre-deployment planning and post-deployment reporting of access point locations on a floor plan

PW0-104 Wireless LAN Administration Certified Practice Exam Set 3

What mechanisms are specified by the IEEE 802.11 standard to attempt to prevent multiple radios from transmitting on the RF medium at a given point in time? (Choose 3)


Options are :

  • Slot assessment value
  • Random backoff timer
  • Network allocation vector
  • Clear channel assessment

Answer : Random backoff timer Network allocation vector Clear channel assessment

As a station moves away from the access point to which it is associated, it changes its data rate from 600 Mbps to 540 Mbps and then to 450 Mbps.What IEEE 802.11 term or phase is used to describe this functionality?


Options are :

  • Rate Set Selectivity
  • Modulation and Coding Selection
  • Multirate Control
  • Dynamic Rate Switching

Answer : Dynamic Rate Switching

What component of the 802.11 standard allows stations to reserve access to the RF medium for a specified period of time?


Options are :

  • DTIM Interval
  • Listen Interval
  • RTS or CTS frames
  • Short guard intervals

Answer : RTS or CTS frames

PW0-071 Certified Wireless Technology Specialist Sales Exam Set 1

In an 802.11n WLAN with a heterogeneous set of associated client devices including 802.11b, 11g, and 11n, what HT protection mode will the BSS use?


Options are :

  • Mode 0: No protection mode (Greenfield)
  • Mode 2: 20 MHz protection mode
  • Mode 1: Nonmember protection mode
  • Mode 3: Non-HT mixed mode

Answer : Mode 3: Non-HT mixed mode

What term correctly completes the following sentence?In an 802.11 frame, the IP packet is considered by the MAC layer to be a(n) _________.


Options are :

  • PLCP Service Data Unit (PSDU)
  • PLCP Protocol Data Unit (PPDU)
  • MAC Service Data Unit(MSDU)
  • MAC Protocol Data Unit (MPDU)

Answer : MAC Service Data Unit(MSDU)

What term correctly completes the following sentence?802.11a/b/g used a mandatory 800ns guard interval. 802.11n introduced an optional short 400ns guard interval. Guard intervals (GI) are necessary in OFDM to reduce the likelihood of interference between two consecutive ____________.


Options are :

  • Bits
  • Symbols
  • Frames
  • Packets

Answer : Symbols

PW0-204 Certified Wireless Security Professional (CWSP) Exam Set 5

In a Wi-Fi client configuration utility, what feature is most likely to be user configurable?


Options are :

  • WMM-PS Dozing Interval
  • RADIUS Server IP Address
  • 802.1p to WMM mappings
  • EAP Authentication Type
  • SNMPv3 Users

Answer : EAP Authentication Type

During the discovery and connectivity process, client and AP stations exchange information about their supported data rates. After the association, how do client and AP stations select the supported data rate that will be used to send an 802.11 data frame?


Options are :

  • The client and AP may use different transmit rates, but the AP determines the data rate that will be used by each client station in the BSS.
  • The client and AP may use different transmit rates, but the client determines the data rate that it will use and the datarate that the AP will use when communicating to the client.
  • The client and AP each choose the optimal data rate to use independently of one another, based on their own measurements related to the RF link.
  • During the association, the client and AP agree to use thesame transmit rate, but either station can request a change at any time after the association.

Answer : The client and AP each choose the optimal data rate to use independently of one another, based on their own measurements related to the RF link.

Prior to association, what parameter can 802.11 client devices measure and use to select the optimal access point for association?


Options are :

  • Signal strength of access point beacons received
  • Proximity to potential access points
  • Retry rate of probe request and response frames
  • Average round trip time to reach the Internet DNS server

Answer : Signal strength of access point beacons received

PW0-204 Certified Wireless Security Professional (CWSP) Exam Set 2

As XYZ Company’s wireless specialist, you have been asked to troubleshoot some unexpected frame patterns in a wireless protocol capture. Your peers explain that the network’s beacon frames are inconsistent. That is, the BSSID is the same for all beacons, but the source address varies between three different addresses.What network configuration would cause this beacon frame behavior?


Options are :

  • The beacons are from an IBSS instead of a BSS
  • A virtual cell single channel network has been implemented
  • A single AP supports multiple BSSs with different SSIDs
  • Three APs still share the same default configuration.

Answer : The beacons are from an IBSS instead of a BSS

As defined in the 802.11 specification, legacy Power Save requires an inefficient back-andforth frame exchange process. Due to this inefficiency, many WLAN device implementations use a variation of 802.11 Power Save to accomplish the same function.What non-standard power save behavior is used by most Wi-Fi devices in actual legacy Power Save implementations?


Options are :

  • After eachbeacon, the AP attempts to empty its frame buffer by sending Wake-on-WLAN frames to wake each dozing client.
  • The Beacon interval is changed from the default 100 time units to 10 or less time units.
  • Client devices ignore the TIM field and automatically send PS-Poll frames after every beacon.
  • Clients send null data frames to the AP and switch the power management bit from 1 to 0 to receive queued data.

Answer : Clients send null data frames to the AP and switch the power management bit from 1 to 0 to receive queued data.

Which answer correctly completes the following sentence?The WMM certification, created by the Wi-Fi Alliance, is based on the ___________ coordination function with support for ___________ QoS priority.


Options are :

  • Point, scheduled
  • Distributed, trigger-and-delivery
  • Dynamic, distributed
  • Hybrid, contention-based

Answer : Hybrid, contention-based

PW0-270 Certified Wireless Analysis Professional (CWAP) Exam Set 5

What statement about the IEEE 802.11e QoS facility is true?


Options are :

  • Four 802.1p user priorities are mapped to eight 802.11 transmit queues.
  • To improve efficiency, Block Acknowledgments arerequired for Voice and Video WMM queues.
  • 802.11 QoS is achieved by giving high priority queues a statistical advantage at winningcontention.
  • When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.

Answer : 802.11 QoS is achieved by giving high priority queues a statistical advantage at winningcontention.

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