CWNA-106 Certified Wireless Network Administrator Exam Set 2

When a divider connected to the RF transceiver of one sector antenna is incurred. What is this loss is called?


Options are :

  • intentional loss
  • conversion loss
  • loss
  • active loss
  • None

Answer :loss

PW0-104 Wireless LAN Administration Practice Exam Set 5

As a consultant, youβ € ™ ve hired a company XYZ make recommendations to the client device, selection, operation and interoperability. What information should be considered to help them choose the right WLAN client devices?


Options are :

  • None
  • 802.11ac devices support features VHT PHY only a 5-GHz frequency band.
  • 802.11n OFDM is susceptible to high-power, narrow-band noise as 802.11a OFDM
  • In order to toearn Wi-Fi Alliance certification, 802.11n clients stations are needed to support both the 2.4 and 5 GHz frequencies
  • 802.11ac is not compatible with 802.11a or 802.11n

Answer :802.11ac devices support features VHT PHY only a 5-GHz frequency band.

What is needed is always to create a high quality 2.4 GHz RF link to a distance of 3 miles (5 km)?


Options are :

  • Minimum level of output power of 2 W
  • Fresnel Zone, which is at least 60% of the obstacles
  • None
  • Grid antennas endpoint ateach
  • At least an antenna gain of 11 dBi, and the end points

Answer :Fresnel Zone, which is at least 60% of the obstacles

Return loss is a decrease in forward energy system, while some power is reflected back towards the transmitter.What cause high return loss RF transmission, including radio, cables, connectors and antenna?


Options are :

  • an impedance mismatch between the RF components of the system
  • High output power of the transmitter and the use of low-gain antenna
  • The cables longer than onemeter RF system
  • A voltage standing wave ratio (VSWR) is 1: 1
  • None

Answer :an impedance mismatch between the RF components of the system

PW0-105 Certified Wireless Network Administrator Exam Set 4

What word to describe the bending of the RF signal as it travels through the medium of variable density of the free space?


Options are :

  • Reflection
  • diffusion
  • Refraction
  • diffraction
  • None

Answer :Refraction

What advice RF antenna beamwidth are true? (Select 2)


Options are :

  • The horizontal and vertical beam width is calculated at points where the main lobe decrease the power by 3 dB.
  • The lower the antenna gain, moreap-1 is one or both of the narrow beamwidths come.
  • The beamwidth patterns of the antenna polar diagram shows a point where the RF signal ceases to increase.
  • The horizontal beam width is shown (in degrees) of the antenna pattern direction angle.

Answer :The horizontal and vertical beam width is calculated at points where the main lobe decrease the power by 3 dB. The horizontal beam width is shown (in degrees) of the antenna pattern direction angle.

What factors are taken into account when calculating the link budget point-to-point outdoor WLAN bridge link?


Options are :

  • height
  • Transmit antenna gain
  • transmission power
  • operating Frequency

Answer :Transmit antenna gain transmission power operating Frequency

PW0-270 Certified Wireless Analysis Professional (CWAP) Exam Set 6

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


Options are :

  • spatial multiplexing
  • The maximum ratio combining
  • OFDM modulation
  • Shot the guard intervals
  • None

Answer :spatial multiplexing

You are able to take the VHT AP. Which of the following channels are available 802.11ac change + 802.11-2012 standard, which was not available in the standard prior to this amendment?


Options are :

  • 161
  • 144
  • 153
  • None
  • 56

Answer :144

Each unit of measurement is an absolute unit, which is used to determine the power levels on a linear scale?


Options are :

  • RSSI
  • dBm
  • VSWR
  • SNR
  • None

Answer :dBm

CWNA-106 Certified Wireless Network Administrator Exam Set 3

What does the phrase defines the corresponding isotropic radiated power (EIRP)?


Options are :

  • After the radio power cable losses
  • None
  • Average strength of the RF signal, which is sent to a particular antenna
  • Theradio output power into an RF cable
  • Power is supplied to the transmission line to the antenna input terminal

Answer :Average strength of the RF signal, which is sent to a particular antenna

Every technical IEEE 802.11 physical layer (PHY) includes support and compatibility as well as OFDM and HR / DSSS? (Select 2)


Options are :

  • OFDM (802.11a)
  • HT (802.11n)
  • ERP (802.11g)
  • HR / DSSS (802.11b)

Answer :HT (802.11n) ERP (802.11g)

Which statement is true regarding the use of Orthogonal Frequency Division Multiplexing (OFDM), IEEE 802.11 WLANs?


Options are :

  • 802.11ac VHT-OFDM uses a 256-QAM, which increases the data rate significantlyover 64-QAM available HT-OFDM.
  • 802.11a / g / n OFDM includes a plurality of combinations of modulation and coding to achieve data rates of 1-600 Mbps.
  • 802.11a OFDM, 16-QAM administered either 48 or 54 Mbps data rates, depending on the coding rates.
  • 802.11a and 11n for six (6) pilot subcarriers reference receiver detects the frequency and phase shifts the signal.
  • None

Answer :802.11ac VHT-OFDM uses a 256-QAM, which increases the data rate significantlyover 64-QAM available HT-OFDM.

PW0-071 Certified Wireless Technology Specialist Sales Exam Set 3

What is the intended use of WLAN hardware known as pole or mast mounting unit?


Options are :

  • None
  • Installation of the RF amplifier dipole antenna
  • Installation of the PoE injector perforated radome
  • Installed lightning rod is a grounding rod
  • The installation of the antenna mast anomnidirectional

Answer :The installation of the antenna mast anomnidirectional

Every antenna types are generally used indoors Wi-Fi devices implementing MIMO diversity? (Select 2)


Options are :

  • dish
  • dipole
  • grid
  • patch

Answer :dipole patch

XYZ Corporation is experiencing problems with their connections with the existing buildings tobuilding bridge link. Concrete wall on the roof of one building is partially block the Fresnel Zone, and the connection is dropping multiple frames. Administrator to move the antenna area does not preclude a concrete wall and realizes RF cable does not reach the new location of the extension cord is added to move the antenna, what are the likely outcomes?


Options are :

  • The data bit rate is increased by decreasing the VSWR
  • The entire Fresnel grow.
  • None
  • Equivalent isotropic radiated power (EIRP) is reduced.
  • The antenna azimuth beam width is reduced.

Answer :Equivalent isotropic radiated power (EIRP) is reduced.

PW0-105 Certified Wireless Network Administrator CWNA Exam Set 3

When changing the antenna of the WLAN device, which is a similar type of antenna that is greater than the passive gain, which decreases the antenna characteristic?


Options are :

  • beam width
  • area
  • None
  • the active gain
  • receive sensitivity

Answer :beam width

What statements describe the RF cables and connectors used in the 802.11 WLAN system? (Select 3)


Options are :

  • The two RF connectors of the same type (e.g. SMA), manufactured by different companies, can vary depending on requirements.
  • The RF cable has an upper and a lower frequency range of the specifications.
  • Each RF connector cause insertion loss.
  • 75 and 125 ohm characteristic impedances are 802.11 wireless LAN terminals

Answer :The two RF connectors of the same type (e.g. SMA), manufactured by different companies, can vary depending on requirements. The RF cable has an upper and a lower frequency range of the specifications. Each RF connector cause insertion loss.

What is the IEEE 802.11 standard defined ways to try to prevent multiple radios sending RF medium at a given time? (Select 3)


Options are :

  • Slot evaluation value
  • A random backoff time timer
  • Clear Channel Assessment
  • The network allocation vector

Answer :A random backoff time timer Clear Channel Assessment The network allocation vector

PW0-105 Certified Wireless Network Administrator Exam Set 1

What problems may continue for a multi-channel architecture (MCA) when the WLAN AP to all operating at full speed (typically 100 mW)? (Select 2)


Options are :

  • WLAN client stations to experience piiloasemaongelma when close to each other in the same cell.
  • The cell size may be too large, causing co-channel interference to adjacent cells and reducing the system capacity.
  • between incompatible power WLAN client stations and base stations violates the IEEE regulatory and signal quality standards.
  • Wi-Fi voice handsets low transmission power can experience the asynchronous downlink and uplink performance.

Answer :The cell size may be too large, causing co-channel interference to adjacent cells and reducing the system capacity. Wi-Fi voice handsets low transmission power can experience the asynchronous downlink and uplink performance.

If the 802.11 RF transmission reaches the receiving antenna at the same time the direct and the reflected paths, the effect of the reflected signal is a signal path that took a direct line-of-sight?


Options are :

  • If signalsare phase, they combine with each other, cancel one another out, and create zero.
  • None
  • The signals are distorted, the indirect signal arrives at the receiver at the same time, but the 90 degree phase shift.
  • of the direct signal only if the reflected signal is greater than 180 degrees out of phase.
  • Direct signal can not be received, the indirect signal is less than 90 degrees, ofphase.

Answer :The signals are distorted, the indirect signal arrives at the receiver at the same time, but the 90 degree phase shift.

Two co-located 802.11b / g / n AP may interfere with each other and cause contention and collisions, even though the two APs are operating in a non-overlapping channels (e.g., one and six.) .What the introduction of an error can cause this problem? (Select 2)


Options are :

  • Base stations are installed too close to each other.
  • Power output of the base stations are too high.
  • The customer station is usingactive scanning probe base stations on multiple channels.
  • Reflective objects result in significant multipath area.

Answer :Base stations are installed too close to each other. Power output of the base stations are too high.

PW0-270 Certified Wireless Analysis Professional (CWAP) Exam Set 1

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


Options are :

  • power Management
  • AESkey and block size
  • The frame generator utility
  • Co-channel interference threshold

Answer :power Management AESkey and block size

What industry practices describe communication protocols for WLAN controllers and controller-based access points? (Select 2)


Options are :

  • For most sellers, controller-based access points maintain the tunnels of information and control of at least two controllers immediately fault tolerance and redundancy.
  • All manufacturers use the same protocol, so that the base stations are compatible WLAN controllers from other suppliers.
  • Some manufacturers use proprietary protocols, and some vendorsuse protocols are based on public standards such as RFC.
  • All providers support at least one L2 or L3 broadcastprotocol controller discovery controller-based AP.

Answer :Some manufacturers use proprietary protocols, and some vendorsuse protocols are based on public standards such as RFC. All providers support at least one L2 or L3 broadcastprotocol controller discovery controller-based AP.

ABC Company is the 2.4 and 5 GHz WLAN deployment. DFS functionality is activated as required by the regulatory domain and the AP uses DFS channels as long as assistance is detected. The band control is also used to promote the dual-band customer uses the frequency bands of more capacity.Your performance analysis shows that a number of dual-band VoWiFi client devices move back and forth in 2.4 and 5 GHz users to roam throughout the building. All AP 2.4 and 5 GHz radio enabled transmission power adjusted to accommodate the relatively similar cell sizes.This € ? € œband hopping behavior is to look at the network personnel are desirable. What is the most likely cause of the unpredictable behavior of the client to generate the band?


Options are :

  • Sound client does not support the DFS, and therefore exhibits approximately 5 GHz coverage holesas it travels through the network.
  • 5 GHz frequencies offer better penetration than the RF 2.4 GHz, 2.4 GHz, but offers more capacity and latency call than 5 GHz.
  • None
  • Disorders operating frequency of 5 GHz radar sources has increased corruption body and retries channels 36-48.
  • Customer band selection algorithm preferably 5 GHz band but control the behavior controls a 75-85% terminal 2.4 GHz.

Answer :Sound client does not support the DFS, and therefore exhibits approximately 5 GHz coverage holesas it travels through the network.

CWNA-106 Certified Wireless Network Administrator Exam Set 3

What component of the 802.11 standard allows stations to reserve access to the RF medium in a certain time?


Options are :

  • A short guard intervals
  • None
  • DTIM Interval
  • listen interval
  • RTS or CTS frames

Answer :RTS or CTS frames

What problems can occur when there is a hidden knots BSS?


Options are :

  • Use body fragmentation of the fragment breaks.
  • The addition of the downlink (AP transmitted) frame retries.
  • Excessive use of null data frames.
  • None
  • High retransmission subset of client stations.

Answer :High retransmission subset of client stations.

Lynne runs a small hotel, which is value added service to his customers, he has taken a Wi-Fi hot-spot. Lynne has read the news about how hackers to queue hotspots try to take advantage of unsuspecting users. He wants to avoid this problem, he hotel.What is a powerful and practical step that Lynne can reduce the likelihood of active attacks his clients' wireless computers?


Options are :

  • Take a station-to-station traffic blocking by the base stations of the hotel.
  • To implement SSL VPN WLAN controller, which will start after HTTPS login.
  • None
  • To implement Network Access Control (NAC) and require anti-virus and firewall software, and operating system patches.
  • Require EAP-FAST authentication and provide customers with the username / password of their receipt.

Answer :Take a station-to-station traffic blocking by the base stations of the hotel.

PW0-270 Certified Wireless Analysis Professional (CWAP) Exam Set 3

What declaration on 802.11 WLAN Performance is true?


Options are :

  • BSS 65 KB support A-MPDU willincrease the maximum available data rate of the client devices.
  • Compared to an independent BSS, infrastructure BSS can provide almost twice the throughput of the wireless nodes.
  • None
  • In 802.11ac, the password change mechanism WPA2-Personal WPA2-Enterprise allows VHT MCS prices.
  • Larger frame sizes results in greater throughput of low interference environments.

Answer :Larger frame sizes results in greater throughput of low interference environments.

What position + 802.3-2012, Clause 33 Power over Ethernet is true?


Options are :

  • By using CAT3 cabling, you can increase the maximum available PD breath.
  • When using CAT5 cabling, reducing the available maximum draw of PD.
  • Only endpoint of public bodies are supported.
  • None
  • Up to 30 watts of power may be provided through an Ethernet cable.

Answer :Up to 30 watts of power may be provided through an Ethernet cable.

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