Test
Exam level: CWNA Edited- Additional added
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Preguntas del test (148)
1What antenna connector type is shown on the PCIe Half Mini radio in the exhibit? (You must select 1 answer)
- ATNC
- BN Type
- CRP-SMA
- DPCI
- EU.FL
2The exhibit illustrates a frame trace displayed by a protocol analyzer. What is shown in this frame trace? (You must select 1 answer)
- AA vendor-specific implementation of RFID “beacon” data carried in 802.11 data frames
- BMAC frames containing CRC-errors that are incorrectly reported as EAPoL and unencrypted LLC frames
- CA mesh WDS with a proprietary MAC frame format and source address that is misinterpreted by the protocol analyzer
- DThe source addressing scheme of frames 3-9 indicates a broadcast protocol destined to all members of the BSS
- EA WIPS threat mitigation designed to prevent EAP flood attacks against the AP
3It is important for a WLAN administrator to understand the process used by the IEEE to create and update standards. When a standard is updated, what kind of document is used to specify the update?
You must select 1 answer- AAmendment
- BStandard
- CPatch
- DUpgrade
4Given: 802.11a OFDM and 802.11g ERP both use OFDM to achieve data rates of up to 54 Mbps.
Which data rates are specified as mandatory by the 802.11g ERP specification, but not specified as mandatory by the 802.11a OFDM specification? (Choose 2)- A2 Mbps
- B5.5 Mbps
- C6 Mbps
- D12 Mbps
- E36 Mbps
- F48 Mbps
5You wish to implement a spectrum analysis solution that provides real-time web-based viewing of spectrum activity within your environment. What kind of solution will work best for this scenario?
You must select 1 answer- AUSB-based
- BAP-based
- CCardbus-based
- DDesktop
6What condition creates a hidden node problem within a Wi-Fi network?
You must select 1 answer- AWhen the access point cannot hear an associated station's transmissions.
- BWhen associated stations cannot hear the access point's omni-directional transmissions.
- CWhen associated stations cannot hear other associated stations' transmissions.
- DWhen access points cannot hear other access points within the same service set.
7The 802.11i-2004 amendment defines and supports what three cipher suites?
You must select 3 answers- AWEP
- BPSK
- CCCMP
- DTKIP
- EIPSec
- FSSH2
8A WLAN is implemented using WPA-Personal and MAC filtering.
To what common wireless network attacks is this network potentially vulnerable? (Choose 3)
You must select 3 answers- ADoS
- BMAC Spoofing
- CASLEAP
- DEavesdropping
9When an organization already has a robust PKI with servers involved that are not overly taxed and you are implementing a new WLAN, what advantage is provided if you choose to implement EAP-TLS?
You must select 1 answer- AYou already have the needed servers to provide the PSK-based authentication EAP-TLS uses.
- BYou have the infrastructure to handle the required client certificates EAP-TLS uses.
- CYou have the infrastructure to handle the centralized encryption EAP-TLS uses.
- DThere is no advantage, because EAP-TLS will not require a PKI.
10What is one purpose of the Null Data frame?
You must select 1 answer- ATo notify the AP of a change in the power management mode
- BTo notify clients that the AP has no buffered data to transmit
- CUsed in ad hoc mode to synchronize timing within the IBSS
- DUsed as the frame body of a broadcast or multicast management or control frame
- ETo support 802.11 protocol extension features, like wireless ping and ARP
11Given: Your WLAN is designed as an SCA using virtual cell technology. You have deployed 50 dual-band 802.11n APs. Each AP supports three SSIDs, which are enabled on both the 2.4 and 5 GHz radios.
How many different BSSIDs should you expect to see across the entire network?
You must select 1 answer- AOne for each client device.
- B3 BSSIDs
- C6 BSSIDs
- D15 BSSIDs
- E100 BSSIDs
- F150 BSSIDs
- G300 BSSIDs
12When a wireless device checks for energy levels above a particular threshold, at what layer of the OSI model is carrier sense operating?
You must select 1 answer- APhyiscal
- BData Link
- CNetwork
- DTransport
13You have recently performed a network design and installation in a carpeted office environment that was newly constructed. The tenants have not begun using the WLAN yet, but all network infrastructure is in place. During a post-deployment validation survey, you are testing the customer’s applications for proper performance.
What application performance behavior is expected (and generally acceptable) for corporate data applications on this new 2.4 GHz, 20 MHz 802.11n 2x2 network? (Choose 2)
You must select 2 answers- AThroughput in excess of 15 Mbps
- BThroughput in excess of 50 Mbps
- CThroughput in excess of 150 Mbps
- DRetries near 10% or less
- ERetries near 25% or less
- FRetries near 50% or less
14100 mW is equivalent to what absolute value?
You must select 1 answer- A0 dBm
- B10 dBm
- C13 dBm
- D20 dBm
- E23 dBm
- F30 dBm
- G100 dBm
15When considering the DCF operations of a WLAN, what value is used in most cases to establish the NAV timer in a STA?
You must select 1 answer- AMAX_NAV
- BMIN_NAV
- CDuration
- DContention window
16You have implemented a WLAN system that experiences through loss. What is the likely antenna type used in this system?
You must select 1 answer- AOmni
- BSector
- CDipole
- DPatch
17Within RSNA Security Associations, how many station key security associations can exist at a time between the device and a given peer?
You must select 1 answer- AOne
- BTwo
- CThree
- DUnlimited
18Which of these RF signal measurements should be recorded during a pre-deployment indoor manual site survey? (Choose 2)
You must select 2 answers- AdBi
- BErlang
- CdBm
- DSNR
- EOhm
- FVSWR
19What kind of spectrum analysis solution provides a view of the RF activity near a client when required?
You must select 1 answer- AInfrastructure
- BMobile
- CAP-based
- DController-based
20At what OSI Model layer does CAPWAP operate?
You must select 1 answer- A1
- B2
- C3
- D4
21You are performing an RF site survey for an indoor mesh network that will use dual-band APs. With this configuration, what Wi-Fi network design concept should be considered?
You must select 1 answer- AThe mesh backhaul radio should use a different frequency band than the client connectivity radio
- BThe mesh backhaul radio should be configured to support overflow clients when the client radio reaches capacity
- CThe mesh backhaul radio should use a unique form of security for each client station
- DThe mesh backhaul radio should use much higher output power than the client connectivity radio
22XYZ Company is using a single 40 MHz HT access point in their New York branch office. There are ten HT wireless client stations currently on the network, each in use by XYZ’s full-time employees. XYZ has hired a consultant to work on some accounting problems, and he is using an OFDM radio card in his laptop. How might this affect XYZ’s WLAN throughput performance on whatever channel the OFDM radio is using?
You must select 1 answer- AThere will be no affect on the channel’s throughput since the AP may transmit unicast data to each station using the receiver’s highest supported rate.
- BThe channel’s throughput will remain unchanged, but the OFDM client station will cause the HT stations to use lower transmission data rates.
- CThe channel’s throughput will decrease slightly because the AP and each HT client station must begin using some form of non-HT protection.
- DThe channel’s throughput capacity may decrease slightly, but only because the maximum data rate of OFDM stations is less than that of HT stations.
- EThe channel’s throughput will decrease by as much as 80% due to mandatory use of OFDM data rates by all HT stations.
23An RP-TNC connector used with 802.11 WLANs will typically have what impedance?
You must select 1 answer- A25 ohms
- B50 ohms
- C62 ohms
- D75 ohms
- E93 ohms
24When a device lists a transmit power of 14 dBm, what does that equal in mW?
You must select 1 answer- A50
- B100
- C25
- D40
25Your customer would like to use a Wi-Fi solution to connect two buildings, which are located 2 miles from one another. What equipment and configuration settings should be used for this solution?
You must select 1 answer- ATwo mesh access points configured to use non-overlapping channels
- BTwo repeater access points configured with different SSIDs
- CTwo workgroup bridges configured with matching security settings
- DTwo Wi-Fi bridges configured with matching SSIDs
26While auditing ABC Company's wireless security solution, you discover ABC Company has a 'closed' system that does not broadcast the network name in its beacons.
What explanations can you provide to ABC Company regarding its use of hidden SSIDs?
You must select 2 answers- APrevents intruders from actively discovering the wireless network
- BStops WLAN discovery tools such as Netstumbler from locating the wireless network
- CProhibits client devices from discovering the network name using passive scanning
- DPrevents intruders from learning the SSID in order to join the wireless network
- EKeeps users from accidentally attempting to connect to the wrong wireless network
27What unit conversions are possible when performing wireless LAN RF math calculations? (Choose 2)
You must select 2 answers- AdBm to mW
- BdBi to mW
- CdBd to dBi
- DdBm to dBi
- ERSSI to dBd
28When using a protocol analyzer to capture wireless conversations, which types of encrypted packets can typically be decoded by most professional-grade wireless protocol analyzers?
You must select 3 answers- AWEP
- BWPA-Personal
- CWPA2-Personal
- DWPA-Enterprise
- EWPA2-Enterprise
- FVPN
29You are implementing a WLAN that requires roaming for some client devices. What kind of roaming should be implemented to ensure IP connections are not broken?
You must select 1 answer- ALayer 2 roaming
- BLayer 3 roaming
- CLayer 4 roaming
- DNo roaming
30You have a deployed 802.11n network consisting of 150 APs. You want to upgrade to 802.11ac. Which upgrade method allows the move to 802.11ac without replacing the existing APs?
You must select 1 answer- ASoftware
- BModular
- CForklift
- DPhased
31Given: Your enterprise is comprised of a large central campus and many (100+) sites with 1-3 APs each. Deploying a WLAN controller at each remote site is cost prohibitive, so the remotely located APs build a VPN tunnel to the WLAN controllers in the DMZ of the main campus. The remote AP configuration supports centralized control and user authentication functions at the main campus while data bridging is performed locally. Each AP broadcasts three SSIDs:
Corporate — WPA2-Enterprise with PEAPv0/EAP-MSCHAPv2
Corporate_Special — WPA2-Personal
Guest — Captive web portal authentication requiring guest password/PIN
In this operational model, what occurs when the WAN link to the main campus fails? (Choose 2)
You must select 2 answers
- AAll existing users are disassociated immediately and all AP functions stop.
- BExisting users remain associated, but all data traffic flow stops.
- CNo new users may join the Corporate SSID.
- DNo new users may join the Guest SSID
- ENo new users may join the Corporate_Special SSID.
- FAll WLANs continue to operate with full functionality.
- GAPs begin to perform authentication and key management functions for all WLANs locally.
32In a standard 2.2 dBi rubber duck antenna, what is the typical relationship between each conductor’s length and the frequency’s wavelength?
You must select 1 answer- AEach conductor length = 1/4 wavelength
- BEach conductor length = 1/2 wavelength
- CEach conductor length = 1 wavelength
- DEach conductor length = 2 wavelength
33You are asked by your employer to research and recommend new USB wireless client devices for your company. While researching different vendor products, you notice that several vendors use the same chipset in their radio cards.
What is true of radio cards from different vendors that share the same chipset and the same country settings? (Choose 2)
You must select 2 answers- AIf antennas are the same, performance will be indistinguishable
- BOne vendor's drivers may work with another vendor's card
- CReported RSSI values will be identical
- DBoth cards will support the same features and utilities
- EPower output levels will be identical
34When you perform a protocol capture on a network using TKIP you notice the absence of the RSN IE. Why is this occurring?
You must select 1 answer- ATKIP uses the RSN IE only with WPA2-Enterprise.
- BCCMP uses the RSN IE when TKIP is also in use.
- CTKIP uses manufacturer-specific information elements for WPA information.
- DOnly WEP used the RSN IE.
35Given: The exhibits illustrate decoded sections of the same Beacon frame from an 802.11n AP.
What statement is definitively true of the frame decodes shown in the exhibit?
You must select 1 answer
- ASince it supports MRC, the 802.11 chipset in this AP must be either 2x3 or 3x3 MIMO.
- BThis AP does not support Block Acknowledgements.
- CThis BSS is limited to a GI of 800 ns.
- DThis BSS does not support frame aggregation.
- EDue to Rx and Tx STBC support, this AP only supports one spatial stream.
- FThis AP cannot use the legacy SIGNAL field to set the NAV of other STAs to protect an entire frame exchange.
36The IEEE 802.11 TSPEC element contains which parameters?
You must select 4 answers- ATraffic Stream (TS) Info
- BMaximum MSDU Size
- CInactivity Interval
- DBSS Load Info
- EMinimum PHY Rate
37You have been asked to recommend an EAP type. The requirements are as follows:
-Server certificates are acceptable, but client certificates are not
-The solution must be considered secure
Which one of the following EAP types will you recommend?
You must select 1 answer- AEAP-TLS
- BEAP-TTLS
- CLEAP
- DEAP-MD5
38You plan to implement an 802.11n WLAN in the 5 GHz frequency band. You will only use channels available in the UNII-1 and UNII-2 bands. How many 40 MHz channels can be implemented assuming all channels in these bands are available in your regulatory domain?
You must select 1 answer- A8
- B4
- C2
- D1
39Enterprise-class APs or wireless LAN controllers may be monitored and configured using which of these protocols? (Choose 3)
You must select 3 answers- AHTTPS
- BSNMP
- CSSH
- DRADIUS
- EIAPP
- F802.1X/EAP
- GSMTP
40Which protocols that are used to manage WLAN infrastructure devices support authentication and encryption?
You must select 3 answers- APOP3/SSL
- BRIPv2
- CSNMPv3
- DSSH2
- EHTTPS
- FLDAP
41You are creating documentation for a WLAN project. What document releases one or both parties from legal actions based on accidental damage?
You must select 1 answer- ABill of materials
- BNon-Disclosure Agreement
- CScope of work
- DHold harmless
42The SCA WLAN model uses multiple APs on the same channel in the same coverage area
- ATrue
- BFalse
43When using wireless LAN repeater, what percentage of throughput is lost?
- A20
- B50
- C25
- D75
44In a mesh WLAN implementation, what kind of AP provides access to the infrastructure for other APs, but does not provide client access?
- AMesh portal
- BMesh router
- CMesh point
- DMesh repeater
45Which of the following roles may be played by a typical enterprise AP?
Choose 3- ARepeater
- BRouter
- CBridge
- DAccess Point
46What does the client software allow a wireless device to do?
- AConfigure the switch so that APs can connect
- BConnect to a WLAN and manage the settings for that WLAN connection
- CImplement a WLAN using WPA2-Enterprise through an internal PKI
- DConfigure the AP so that clients can connect
47Which of the following organisations is responsible for compatibility testing of 802.11 hardware?
- AIEEE
- BETSI
- CWi-Fi Alliance
- DFCC
- EITU-R
48You want to read the 802.11 standard so that you can better understand the details of the MAC and PHY layer functionality in wireless LANs. Which organization's web site should you visit?
- AIEEE
- BETSI
- CWi-Fi Alliance
- DFCC
49802.11 technology is typically deployed at which fundamental layer of network architecture?
- ACore
- BDistribution
- CAccess
- DNetwork
50Which organization is responsible for enforcing maximum transmit power rules in an unlicensed frequency band?
- AIEEE
- BWi-Fi Alliance
- CISO
- DIETF
- ENone of the above
51802.11 wireless bridge links are typically associated with which network architecture layer?
- ACore
- BDistribution
- CAccess
- DNetwork
52The 802.11-2012 standard was created by which organization?
- AIEEE
- BOSI
- CISO
- DWi-Fi Alliance
- EFCC
53What type of signal is required to carry data?
- ACommunications signal
- BData signal
- CCarrier signal
- DBinary signal
- EDigital signal
54Which keying method is most susceptible to interference from noise?
- AFSK
- BASK
- CPSK
- DDSK
55Which sublayer of the OSI model’s Data-Link layer is used for communication between 802.11 radios?
- ALLC
- BWPA
- CMAC
- DFSK
56While performing some research, Janie comes across a reference to a document titled RFC 3935. Which of the following organization’s website would be best to further research this document?
- AIEEE
- BWi-Fi Alliance
- CWECA
- DFCC
- EIETF
57The Wi-Fi Alliance is responsible for which of the following certification programs?
- A802.11i
- BWEP
- C802.11-2012
- DWMM
- EPSK
58Which wave properties can be modulated to encode data? (Choose all that apply.)
- AAmplitude
- BFrequency
- CPhase
- DWavelength
59The IEEE 802.11-2012 standard defines communication mechanisms at which layers of the OSI model? (Choose all that apply.)
- ANetwork
- BPhysical
- CTransport
- DApplication
- EData-Link
- FSession
60The height or power of a wave is known as what?
- APhase
- BFrequency
- CAmplitude
- DWavelength
61Samantha received a gaming system as a gift. She would like to have it communicate with her sister Jennifer’s gaming system so that they can play against each other. Which of the following technologies, if deployed in the two gaming systems, should provide for the easi- est configuration of the two systems to communicate with each other?
- AWi-Fi Personal
- BWi-Fi Direct
- C802.11n
- DCWG-RF
- EWi-Fi Protected Setup
62What other Wi-Fi Alliance certifications are required before a Wi-Fi radio can also be certi-
fied as Voice Enterprise compliant? (Choose all that apply.)- AWMM-Power Save
- BWi-Fi Direct
- CWPA2-Enterprise
- DVoice Personal
- EWMM-Admission Control
63Which of the following wireless communications parameters and usage are typically governed by a local regulatory authority? (Choose all that apply.)
- AFrequency
- BBandwidth
- CMaximum transmit power
- DMaximum EIRP
- EIndoor/outdoor usage
64The Wi-Fi Alliance is responsible for which of the following certification programs? (Choose all that apply.)
- AWECA
- BVoice Personal
- C802.11v
- DWAVE
- EWMM-PS
65A wave is divided into degrees. How many degrees make up a complete wave?
- A100
- B180
- C212
- D360
66What are the advantages of using unlicensed frequency bands for RF transmissions? (Choose all that apply.)
- AThere are no government regulations.
- BThere is no additional financial cost.
- CAnyone can use the frequency band.
- DThere are no rules.
67The OSI model consists of how many layers?
- A4
- B6
- C7
- D9
68As part of your company's wireless security policy, you are creating several password policies to help prevent your company's passwords from being compromised.
What password policy should be included to significantly reduce the likelihood that an online dictionary attack will successfully compromise a user's password?
You must select 3 answers- APasswords must be at least eight characters long
- BUser accounts will be disabled after five unsuccessful login attempts
- CPasswords must change after any unsuccessful login attempt
- DOnly administrators are allowed to choose user passwords
- EUsers should not share passwords with other users
- FPasswords should consist of upper case, lower case, numbers, and special characters
69Given: Your WLAN consists of a “split MAC” centralized architecture with centralized data forwarding and encrypted L3 tunnels between the APs and WLAN controllers. Your WLAN infrastructure supports WMM and your corporate users take full advantage of the WLAN with video, voice, and general data applications. You also provide guest Internet access.
In this design scenario, what DSCP classification would be assigned to voice traffic travelling from the AP to the WLAN controller when the voice traffic (e.g. Skype) is sent upstream by a non-WMM client station on the guest network?
You must select 1 answer- ADSCP 48-55
- BDSCP 40-47
- CDSCP 32-39
- DDSCP 24-31
- EDSCP 0
70You've recently purchased a WLAN controller that supports rate limiting. What benefits may your company gain from implementing this feature?
You must select 2 answers- AReduction of network congestion
- BProtection against some layer 2 DoS attacks
- CIncreased bandwidth for all wireless users
- DAdditional throughput for all wireless users
- EFewer wireless access points required
71As a consultant, you are explaining the risks of WLAN Denial-of-Service (DoS) attacks to a group of engineers at ABC Corporation. They understand DoS attacks, but do not understand wireless technology very well. You inform the engineers that there are multiple WLAN DoS attacks that must be mitigated as part of a security strategy. Which DoS attacks do you mention in your discussion with the group of engineers?
You must select 3 answers- AUse of 2.4 GHz cordless phones
- BWideband RF jamming
- C802.11 deauthentication
- DEAP-Start flooding
- ESSID hiding
- FAdjacent channel interference
72Given: ABC Company is preparing for a new Wi-Fi network deployment in their corporate office. ABC has the following needs for their wireless network:
1. 20 APs for pervasive coverage
2. 3 SSID Profiles -- Data, Voice, and Guest
3. Centralized management of AP configuration and firmware
What pairs of Wi-Fi network devices could be used to achieve ABC's Wi-Fi network requirements?
You must select 2 answers- AWLAN Controller; Controller-based APs
- BWNMS; Controller-based APs
- CWNMS; Autonomous APs
- DWIPS; Autonomous APs
- EWLAN Controller; Wireless Bridges
73Wi-Fi equipment complying with __________ is not compatible with equipment complying with ___________.
You must select 1 answer- A802.11a, 802.11g
- B802.11b, 802.11g
- C802.11n, 802.11a
- D802.11n, 802.11g
- E802.11n, 802.11b
74What type of wireless networking device can be used to extend the range of a wireless network without connecting to the network using data cables?
You must select 2 answers- AMesh Access Point
- BRepeater Access Point
- CWireless Workgroup Bridge
- DWireless Bridge
- EWireless Media Gateway
75What Wi-Fi device can be powered using standards-based (IEEE 802.3af or 802.3at) Power-over-Ethernet (PoE)?
You must select 1 answer- ALaptop Computer
- BWLAN Controllers
- CAccess Points
- DRF Amplifier
- EMIMO Patch Antenna
76Given: As a salesperson for ABC Company, which sells APs and PoE switches, you are encouraged to recommend infrastructure upgrades to customers who wish to purchase APs. After you include two PoE switches in your recommended equipment list, your customer asks you about the benefits of powering APs with PoE versus AC power.
What benefits of PoE do you discuss with your customer to support your recommended equipment list?
You must select 2 answers- APoE switches increase the maximum usable length of a Category 5e cable run.
- BPoE switches generally cost less than non-PoE switches.
- CPoE switches eliminate the need for AC power at each AP location.
- DPoE switches allow administrators to power cycle an AP from a remote location.
- EPoE switches provide more data throughput than non-PoE switches.
77802.11n autonomous APs used in SOHO Wi-Fi networks are usually shipped from the manufacturer with which type of antenna?
You must select 1 answer- ADipole
- BIsotropic
- CPatch
- DYagi
- EParabolic
78Given: Because of the reliability improvements offered by 802.11n, ABC Hospital has decided to begin migrating many of their client work stations to the Wi-Fi network. This includes mobile devices used by doctors to maintain patient medical records as well as stations used to process patient credit card payments.
Given these uses, which compliance standard must be upheld by ABC Hospital?
You must select 1 answer- AIEEE
- BWPA2
- CPCI
- DWIPS
- ERBAC
79What considerations should be made for Wi-Fi networks in retail environments where the APs only support WEP encryption?
You must select 1 answer- APCI Compliance requirements for WEP use
- BConfiguration of the server's X.509 certificate
- CNeighboring networks using the same WEP key
- DRADIUS server compatibility with the AP or controller
Exit Test Answer Question
80As a new salesperson for ABC Consulting, you are familiarizing yourself with the features of the equipment you will sell. You have been reading about a remote AP feature that creates an encrypted tunnel across the Internet in order to securely transfer traffic from the remote location onto a corporate network. What is the term that is used to refer to this technology?
You must select 1 answer- AWireless Intrusion Prevention System (WIPS)
- BVirtual Private Network (VPN)
- CRole-Based Access Control (RBAC)
- DMobile User Tunneling (MUT)
- EDistributed Channel Access (DCA)
81Wi-Fi Protected Access (WPA) was originally developed to address the weaknesses of what legacy security mechanism?
You must select 1 answer- AMAC filters
- BWireless IDS
- CWEP
- DSSID Hiding
- EVPN
- FTKIP
82What solution can be used to monitor and enforce compliance with organizational security policies and industry regulations on the Wi-Fi network?
You must select 2 answers- A802.1X/EAP authentication
- BWireless Network Management System
- CCorporate antivirus software
- DWireless Intrusion Protection System
- EVPN client and server software
83What Wi-Fi Alliance security certifications can use the TKIP cipher suite?
You must select 2 answers- AWPA-PSK
- BWPA2-Enterprise
- CWMM
- DWEP
- EWIPS
84For what reason is MAC filtering considered a poor security solution in 802.11g Wi-Fi networks?
You must select 1 answer- AMAC address information is always transmitted in clear-text and is easily cloned on unauthorized client devices.
- BMAC filters only work with 802.11b access points and client devices.
- CClient devices have up to 4 MAC addresses, which can create excessive administrative overhead.
- DEncryption algorithms used for MAC address security in Wi-Fi networks are very weak.
- ECopying the 256-byte MAC address into a MAC filter often results in typographical errors.
85What statement correctly describes a type of Wi-Fi security?
You must select 1 answer- AWired Equivalent Privacy is a certification offered by the Wi-Fi Alliance for the creation of a robust security network.
- BWi-Fi Multimedia is a certification that provides strong security for voice and video data.
- CWi-Fi Protected Access is a certification designed to facilitate the configuration of a secure network for homes and small offices.
- D802.1X/EAP is a legacy certification that has proven to have inadequate industry support in enterprise deployments.
86Given: ABC Company recently hired a contractor to perform a site survey in their corporate office. The site surveyor recommended that ABC purchase 9 access points to provide sufficient Wi-Fi coverage and capacity in ABC's office. In order to save money, ABC decided to purchase only 5 access points and configured the access points to transmit at maximum power. After a post-deployment site survey, it was determined that this solution provided coverage to the entire building.
What common problem could result from ABC's decision to use fewer access points configured with higher transmit power?
You must select 2 answers- AAuthentication failure
- BProbe Request increases
- CExcessive client roaming
- DLow data rates
- EHidden nodes
87What condition creates a hidden node problem within a Wi-Fi network?
You must select 1 answer- AWhen the access point cannot hear an associated station's transmissions.
- BWhen associated stations cannot hear the access point's omni-directional transmissions.
- CWhen associated stations cannot hear other associated stations' transmissions.
- DWhen access points cannot hear other access points within the same service set.
88Given: You want to implement a new wireless network in your office, but you are concerned about interference coming from three existing 802.11g wireless networks operating in nearby offices. The 802.11g networks are using channels 1, 6, and 11.
Which Wi-Fi deployment strategy will yield the least amount of interference in this situation?
You must select 1 answer- AImplement 5 GHz 802.11a APs on an unused channel
- BImplement 2.4 GHz 802.11n APs using a 40 MHz wide channel
- CImplement 2.4 GHz 802.11g APs configured for an unused channel
- DImplement 2.4 GHz 802.11g APs configured to use low output power
89ABC Company is experiencing intermittent Wi-Fi connectivity in their corporate office, and you suspect that RF interference is the cause. To prove your theory, what tool would be most appropriate for the discovery and identification of an RF interference source?
You must select 1 answer- AProtocol Analyzer
- BAdaptive Analyzer
- CData Link Analyzer
- DSpectrum Analyzer
- EWLAN Controller
90A customer at a hotel has discovered an 802.11a Wi-Fi network by using the connection utility that is managing the Wi-Fi card in the customer's laptop. When the user attempts to connect to the network, the attempt fails. Others nearby are using the network without any problems. What is the most likely cause of this user's failed connection attempt?
You must select 1 answer- AThe user does not have a personal firewall enabled on the laptop
- BThe user has entered invalid security credentials and failed authentication.
- CThe SSID is not being broadcast in the AP's Beacon frames.
- DThe user's Wi-Fi card supports 802.11g only, but the network is 802.11a.
91ABC Company leases office space in a large multi-tenant office building. What is likely to cause the greatest amount of RF interference with ABC's 802.11g Wi-Fi network in this building?
You must select 1 answer- AWireless Intrusion Detection Systems in use with other tenant's Wi-Fi networks
- BABC's users accidently associating with neighboring APs, which have no security enabled
- CWi-Fi networks in the surrounding area using the same security method as ABC
- DNeighboring Wi-Fi networks using the same 2.4 GHz channels as ABC
92Your 802.11n Wi-Fi network uses only 5 GHz. A visitor using an 802.11g Wi-Fi card in his laptop tries to connect to your Wi-Fi network, but the client utility says that there are no networks available. Why is the visitor's laptop unable to see or connect to the network?
You must select 1 answer- AThe Wi-Fi card in the laptop is configured to only connect to 802.11g networks.
- B802.11g devices are only compatible with other 802.11g devices.
- C802.11n devices are not backwards compatible with 802.11g devices.
- DThe Wi-Fi card and the AP are using different frequencies.
93A Wi-Fi user is associated to an 802.11b AP on the opposite end of a 15-meter (49 feet) hallway. Users in this area are experiencing long delays and poor video quality while they watch streaming videos from a network server. It has been determined that there is no physical interference in the area, and all stations are associated to the AP at the maximum supported data rate.
What is the most likely cause of the long delays and low quality video?
You must select 1 answer- AThe hallway is contributing to line-of-sight conditions, which causes signal corruption.
- BThe users' stations are located too far from their servicing AP.
- CThe streaming video requires more throughput than the 802.11b Wi-Fi network provides.
- DThe network server's 10/100 Mbps Ethernet connection is causing a throughput bottleneck.
94What is the most likely cause of low throughput on a hotel's guest network?
You must select 1 answer- AThe 1.5 Mbps Internet connection is creating a bottleneck for the Wi-Fi users.
- BThe user's laptop does not have 54 Mbps data rate enabled.
- CThe strong security methods used with public access networks often cause low throughput.
- DThe user is too close to the servicing access point.
95Which device operating in the 2.4 GHz band will not cause interference to an 802.11g Wi-Fi network?
You must select 1 answer- AMicrowave oven
- BCordless phone
- CBaby monitor
- D802.11b AP
- EProtocol analyzer
96You are performing an RF site survey for an indoor mesh network that will use dual-band APs. With this configuration, what Wi-Fi network design concept should be considered?
You must select 1 answer- AThe mesh backhaul radio should use a different frequency band than the client connectivity radio
- BThe mesh backhaul radio should be configured to support overflow clients when the client radio reaches capacity
- CThe mesh backhaul radio should use a unique form of security for each client station
- DThe mesh backhaul radio should use much higher output power than the client connectivity radio
97For what reason should spectrum analysis be performed during a manual site survey?
You must select 1 answer- AIdentification and possible removal of RF interference sources
- BDetermining the proper orientation of access point antennas
- CDetermining the most effective security solution for an environment
- DEvaluating attenuation characteristics of specific materials in an RF environment
98Your network manager asked you to help the company's wireless network administrator go from area to area within your building temporarily hanging APs and recording coverage information. In what type of RF site survey did you participate?
You must select 1 answer- APredictive survey
- BManual survey
- CInterpretive survey
- DVirtual survey
- EAdaptive survey
99What is one DISADVANTAGE of using a predictive software tool when performing RF site surveys?
You must select 1 answer- AA predictive survey tool cannot consider building construction materials
- BA predictive survey tool cannot model client station data connectivity rates
- CA predictive survey tool cannot measure or identify RF interference sources
- DA predictive survey takes considerably longer to perform than a manual survey
- EA predictive survey tool cannot answer "what if" coverage questions
100What information can be gathered during an active manual RF site survey that cannot be collected with a passive manual RF site survey?
You must select 2 answers- AReceived signal strength
- BPacket loss
- CSignal-to-Noise Ratio
- DData rates
- ENoise level
101Using the exhibit, define the best 2.4 GHz channel reuse pattern for a Multiple Channel Architecture (MCA) Wi-Fi system.
You must select 1 answer
- AAP1=1, AP2=6 , AP3=6 , AP4=11 , AP5=1
- BAP1=6, AP2=6 , AP3=6 , AP4=6 , AP5=6
- CAP1=36, AP2=40 , AP3=44, AP4=48 , AP5=52
- DAP1=11, AP2=11 , AP3=1 , AP4=6 , AP5=1
102You are installing a single-AP Wi-Fi network for a coffee shop that will be used for guest access. What aspect of the Wi-Fi implementation is most important for the coffee shop's customers?
You must select 1 answer- ASecurity
- BRoaming
- CQoS
- DCoverage
103When performing a pre-deployment manual site survey for a multi-floor office building, what document is MOST useful to the site surveyor?
You must select 1 answer- ACorporate security policy
- BWi-Fi end user list
- CFacility floor plan
- DAP configuration guide
- EAntenna mounting diagram
104Which application requires a Wi-Fi infrastructure to be designed for high throughput and low latency?
You must select 1 answer- AStreaming video
- BMobile voice
- CBarcode scanners
- DWi-Fi RFID tags
- EInstant messaging
105For what type of Wi-Fi device is a wall mounting kit typically used?
You must select 4 answers- AWorkgroup Bridge
- BPatch Antenna
- CWLAN Controller
- DWIPS Sensor
- EMesh AP
106Where should a lightning arrestor be connected into an outdoor Wi-Fi system?
You must select 1 answer- ADirectly to the WLAN bridge with an appropriate RF connector
- BDirectly to the exterior of the building near the WLAN antenna
- CIn-line between the antenna and WLAN bridge using coaxial cable
- DBetween the WLAN bridge's power cord and the AC power receptacle
107When implementing an indoor Wi-Fi mesh solution, it is important that the antennas on each AP be oriented in the same manner. What is the term that describes this type of antenna orientation?
You must select 1 answer- ABeamwidth
- BPolarization
- CDiversity
- DDiffraction
108Which non-overlapping channel pairs are commonly used in the 2.4 GHz ISM band?
You must select 2 answers- A1 and 5
- B2 and 4
- C7 and 11
- D6 and 11
- E1 and 6
109Which device in a WLAN system increases effective system output power by shaping the existing RF energy into a specific pattern?
You must select 1 answer- AAn amplifier
- BAn attenuator
- CAn antenna
- DAn RF splitter
- EAn RF combiner
110Two APs simultaneously transmit a Beacon frame on channel 1, which causes both Beacons to be corrupted at a receiver. What term describes the result of this event?
You must select 1 answer- AReceive Diversity
- BPhased Distortion
- CCo-channel Interference
- DMIMO Polarization
111What option accurately describes a performance benefit of Multiple Input, Multiple Output (MIMO) technology?
You must select 1 answer- AMIMO allows 802.11n client stations to communicate in the 2.4 GHz and 5 GHz frequency bands at the same time.
- BMIMO allows a client station radio to communicate multiple streams of data at the same time.
- CMIMO provides data rate enhancements for 802.11n networks up to a maximum of 1 Gbps.
- DMIMO enables data rates for 802.11a and 802.11g beyond 54 Mbps.
112Given that antenna gain is measured in comparison to a theoretical antenna that can radiate RF energy equally in all directions, what relative unit is used to measure antenna gain?
You must select 1 answer- AmW
- BdB
- CdBm
- DdBi
113What is the typical range of configurable output power settings for most indoor Wi-Fi access points?
You must select 1 answer- A1 mW to 100 mW
- B50 mW to 500 mW
- C500 mW to 2 W
- D1 W to 5 W
114What type of antenna is best suited for use in a 20 kilometer (12 mile), outdoor, point-to-point bridge deployment?
You must select 1 answer- ADipole
- BGrid
- CPanel
- DPatch
- ESector
115Given: Your customer's hotels have long hallways with rooms on both sides, and the network manager has given you documented aesthetic requirements for access point and antenna deployment. Due to facility design complications, the access point and antenna will be visible to guests at the hotel.
Given these parameters, what antenna type would be most appropriate for covering hallways and rooms in your customer's hotels?
You must select 1 answer- ADipole
- BPatch
- CYagi
- DDish
- EGrid
116What type of antenna has a horizontal beamwidth of 360 degrees that could be deployed in a point-to-multipoint link?
You must select 1 answer- AParabolic Dish
- BDipole
- CPatch
- DYagi
117Your laptop computer currently has an 802.11a/g Mini-PCI card installed. You would like to upgrade your laptop to have dual-band 802.11n capability and to utilize MCS rates up to 300 Mbps. Which interface types can be used for this upgrade?
You must select 2 answers- APCI
- BUSB 2.0
- CExpressCard
- DMini-PCIe
- EN-type
- FUSB 1.0
118What computing devices can use a mini-PCIe Wi-Fi client adapter?
You must select 1 answer- ALaptop Computer
- BVoWiFi Phone
- CDesktop Computer
- DServer Computer
- EAntenna Array
119What configuration parameters in a WLAN client's software can be used to control the access points to which the WLAN client device can connect?
You must select 1 answer- AQoS
- BSSID
- CIP Address
- DPower Save
120Identify the wireless radio interface type depicted in the illustration.
You must select 1 answer
- ASecure Digital
- BCardBus
- CExpressCard
- DMini-PCIe
- ECompact Flash
- FPCMCIA
121A controller-based access point can usually be configured to act as what other device type?
You must select 1 answer- AMesh access point
- BWireless LAN router
- CWireless workgroup bridge
- DWLAN controller
- EWireless media gateway
122WPS, WPA-Personal, and WPA2-Enterprise are all product certifications offered by the ________ that address the topic of __________.
You must select 1 answer- AWi-Fi Alliance ; security
- BIEEE ; Quality of Service (QoS)
- CWLANA ; encryption
- DWi-Fi Task Group n (TGn) ; data rate enhancements
- E802.11 Consortium ; authentication
123Given: All devices used on your WLAN support the three mandatory data rates of 6, 12, and 24 Mbps.
Given these mandatory data rates, what IEEE physical layer (PHY) technology could be in use on your WLAN?
You must select 3 answers- A802.11a (OFDM)
- B802.11b (HR/DSSS)
- C802.11g (ERP-OFDM)
- D802.11n (HT)
- E802.11e (EDCA
- F802.11h (DFS)
124What WLAN system feature serves the purpose of traffic prioritization?
You must select 1 answer- ARole Based Access Control (RBAC)
- BWPA2-Personal (WPA2-PSK)
- CCollision Avoidance (CSMA/CA)
- DQuality of Service (QoS)
- EWireless Intrusion Prevention System (WIPS)
125802.1X/EAP and RADIUS are often used together in Wi-Fi networks to provide __________.
You must select 1 answer- ASecure authentication and encryption on a per-user basis
- BManagement and statistics reporting for autonomous access points
- CRobust firewall policies that filter unwanted network traffic
- DResiliency against RF characteristics that degrade network throughput
- ERedirection of web browsers for secure user authentication
126As a salesperson for ABC Company, you have researched some of the common issues that your customers encounter when upgrading a Wi-Fi network infrastructure from 802.11a/g to 802.11n. For most dual-band 802.11n access point installations, what is one issue that must be considered for the wired network infrastructure?
You must select 1 answer- AThe length of the data cable used for Ethernet backhaul
- BThe data throughput supported by the Ethernet backhaul
- CThe security solution used on the wired infrastructure
- DThe type of connector used with the Ethernet cable
127What term refers to the MAC address of an access point's radio in a Basic Service Set (BSS)?
You must select 1 answer- ALLCID
- BESSID
- CBSSID
- DMACID
- EOUIID
128Given: WLAN standards are created by IEEE, an organization that cannot enforce standards compliance; therefore, manufacturers are responsible for ensuring that their devices remain compliant with a particular standard.
What organization certifies devices for IEEE 802.11 standard compliance and interoperability?
You must select 1 answer- AIETF
- BWiMax Forum
- CWi-Fi Alliance
- DCompTIA
129For what task are regulatory domain governing bodies, such as ETSI and FCC, responsible?
You must select 1 answer- AManaging radio frequency usage and power limits
- BPerforming interoperability testing of WLAN hardware
- CCreating standards for manufacturers of WLAN equipment
- DEnforcing compliance with WLAN security policies
130Given: The IEEE 802.11-2007 standard defines a function that can take advantage of various data rates to maximize WLAN performance. To maintain an optimal connection, data rates will change as the Wi-Fi client moves toward or away from its associated access point. As an example, the client may associate at 54 Mbps, but as the client moves away from the AP, the data rate may adjust to 48 and then 36 Mbps.
What name is given to this behavior?
You must select 1 answer- ATransition Control
- BDynamic Rate Switching
- CBasic Rate Adaptation
- DClear Channel Assessment
- ENetwork Allocation Vector
131The process of establishing a connection between an access point and client station involves two steps known as _________ and __________.
You must select 2 answers- AAdmission Control
- BAuthorization
- CAuthentication
- DAssociation
- EAccess Control
132What device best matches the description of a capacitor?
You must select 1 answer- AA parabolic dish antenna
- BA dipole antenna
- CA coax cable
- DAn AP’s transmitter circuit
133You have a laptop computer with an integrated, dual-band, 802.11ac adapter. Your laptop computer has protocol analyzer software installed that is capable of capturing and decoding 802.11ac data. What is a likely problem you will encounter when attempting to capture 802.11ac frames?
You must select 1 answer- AAll integrated 802.11ac adapters will work with most protocol analyzers for frame capture, this ability is due to the new uni-capture frame format introduced in 802.11ac.
- BIntegrated 802.11ac adapters are often incompatible with protocol analyzers in Windows laptops and a USB adapter is often required.
- CLaptops cannot be used to capture 802.11ac frames because they do not support transmit beamforming.
- DWireshark cannot capture 802.11ac frames because it does not have the proper decode algorithms to do so.
- EThe only way you can capture 802.11ac frames is to perform a remote capture with a compatible access point.
134Which WLAN authentication protocols support mutual authentication without the use of x.509 digital certificates?
You must select 2 answers- A802.1X/EAP-TTLS/MS-CHAPv2
- B802.1X/EAP-TLS
- C802.1X/PEAPv0/EAP-MSCHAPv2
- D802.1X/LEAP
- E802.1X/PEAPv1/EAP-GTC
- F802.1X/EAP-FAST
135What view in a spectrum analyzers is most useful in determining what channel is best for the placement of a new AP?
You must select 1 answer- AReal-time FFT
- BDuty cycle
- CNetworks table
- DDetected devices
136Given: You want to implement a new wireless network in your office, but you are concerned about interference coming from three existing 802.11g wireless networks operating in nearby offices. The 802.11g networks are using channels 1, 6, and 11.
Which Wi-Fi deployment strategy will yield the least amount of interference in this situation?
You must select 1 answer- AImplement 5 GHz 802.11a APs on an unused channel
- BImplement 2.4 GHz 802.11n APs using a 40 MHz wide channel
- CImplement 2.4 GHz 802.11g APs configured for an unused channel
- DImplement 2.4 GHz 802.11g APs configured to use low output power
137What is an advantage of using Power-over-Ethernet (PoE), as opposed to AC power, in an 802.11 WLAN environment?
You must select 1 answer- AReduced number of Ethernet ports and copper UTP cable runs necessary to support the WLAN.
- BCost savings and reduced deployment time when APs are distributed throughout an indoor enterprise environment.
- CProtection from nearby lightning strikes when used over multi-mode fiber.
- DImproved communication distances of copper UTP cabling, reaching lengths of up to 150 meters.
138Choose the answer that correctly completes this sentence.
Data rates of up to _____ Mbps are specified by the ERP (802.11g) physical layer technology in the IEEE 802.11-2007 standard.
You must select 1 answer- A2
- B11
- C54
- D130
- E300
139When selecting a spectrum analyzer, you determine a need for sub-1 GHz analysis. What 802.11 standard or amendment is likely the driving force behind this need?
You must select 1 answer- A802.11ac
- B802.11ad
- C802.11ah
- D802.11n
140What spectrum analyzer feature removes the need for being able to identify wireless interference patterns through experience and knowledge of RF spectrum analysis?
You must select 1 answer- AClassification signatures
- BSignal-to-Noise ratio calculators
- CAutomatic Rate Shifting
- DDynamic frequency adapter
- ERF Fingerprinting
141Given: A Robust Security Network (RSN) is a security network that allows only the creation of robust security network associations (RSNAs). To be considered an RSN, which statement is true?
You must select 1 answer- AAn RSN must support the CCMP cipher suite, may optionally allow use of the TKIP cipher suite, and may not allow the use of WEP.
- BAn RSN must support the CCMP cipher suite, may optionally allow use of the TKIP cipher suite or WEP.
- CAn RSN must support the CCMP cipher suite and the TKIP cipher suite, and may not allow the use of WEP.
- DAn RSN must support the CCMP cipher suite and the TKIP cipher suite, and may optionally allow the use of WEP.
- EAn RSN must support the CCMP cipher suite, may not allow use of the TKIP cipher suite or WEP.
142As a new WLAN administrator for XYZ Corp, you notice that people are hanging around the coffee shop next door to your building aiming Yagi antennas toward your building. You assume that they are, at a minimum, attempting to passively eavesdrop on your network's traffic. How can you verify that these people are indeed passively eavesdropping on your wireless LAN?
You must select 1 answer- ABy using a WLAN protocol analyzer to detect an increase of collisions on the wireless network
- BBy using a WIPS to detect rogue devices
- CBy using a WLAN protocol analyzer detector application
- DBy using a network reconnaissance tool to perform continuous PING sweeps
- EIt is not possible to detect passive eavesdropping
143At what MAC layer transmission rate does an 802.11g access point send Probe Response frames?
You must select 1 answer- AAlways at 1 Mbps.
- BAlways at 6 Mbps
- CAlways at the highest rate supported on both the access point and client station.
- DAlways at the highest basic rate configured on the access point.
- EAlways at the lowest basic rate configured on the access point.
- FAt any rate supported by both the client station and the access point.
144How many channels are available in the 5.150 to 5.875 frequency range as specified for use with 802.11 devices in the IEEE standard including 802.11ac?
You must select 1 answer- A23
- B24
- C25
- D14
145ABC Corporation has spent thousands of dollars implementing a very secure WLAN solution that uses WPA2-compliant 802.1X/EAP-TTLS. ABC Corp still has concerns about potential security holes. ABC Corp has hired you to perform a penetration test of their network, and you are unable to penetrate their authentication or encryption scheme. Which penetration test could you perform next?
You must select 1 answer- AInstall a Homeplug (Powerline) Ethernet bridge in an unused office. Connect a Homeplug access point into an outdoor electrical outlet on the building and access ABC's network from your car.
- BInstall an access point and DHCP server software on your laptop. Use an RF jamming device to hijack EAP users onto your laptop and perform peer attacks against their operating system.
- CUse an RF jamming device to disrupt channel 1 on ABC's wireless network in order to convince them they need to redo the site survey. Have one of your associates call ABC's IT manager and sell him site surveying services. During the site survey, tell users that you need their passwords to make the wireless LAN work for them.
- DInstall RADIUS software that supports 802.1X/EAP-TTLS on your laptop. Call the helpdesk and convince them to give you the RADIUS shared secret. Then install a rogue access point in ABC Corp's lobby.
146A client station is experiencing excessive frame collisions and corruption. What conditions increase the rate of CRC errors in a WLAN connection?
You must select 3 answers- AMultipath
- BHigh SNR
- CCo-channel interference
- DRF interference
- EFragmentation
- FLong guard intervals
- GReceive diversity
147What type of wireless attack can take data and turn it into something predictable and similar, but with important information changed?
You must select 1 answer- AMan-in-the-Middle
- BEvil Twin
- CDoS
- DHijacking
- EBit-flipping
148There are many different types of fast secure roaming protocols. Answer the following question as it relates to a fully distributed network architecture without a WLAN controller.
For which of the fast secure roaming methods is the network architecture's control plane utilized for key sharing and distribution? (Choose all that apply)
You must select 2 answers- APMK Caching
- BPreauthentication
- COKC
- D802.11r (Voice Enterprise)
Información
- Descripción
- CWNA CWNA Test sobre Exam level: CWNA Edited- Additional added, creado por James Darbonne el 31/07/2017.
- Autor
- James Darbonne
- Idioma
- English
- Visitas
- 3
- Etiquetas
- Valoración
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