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السؤال #1
A non-802.11 device is suspected of causing interference on the WLAN. You are not certain of the location or type of device. What is the best solution for locating this non-802.11 device?
A. Access point spectrum analyzer
B. Laptop-based spectrum analyzer with an omni-directional antenna
C. Laptop-based spectrum analyzer with a directional antenna
D. Laptop-based spectrum analyzer with an omni-directional antenna
عرض الإجابة
اجابة صحيحة: A
السؤال #2
You administer a WLAN that offers a guest SSID of GUESTNWORK. User connect to the GUESTNWORK SSID, but report that they cannot browse the internet. The devices simply report no internet connection. What common problem causes this scenario?
A. NTP issues
B. Hardware issues
C. IP routing issues
D. Captive portal issues
عرض الإجابة
اجابة صحيحة: C
السؤال #3
You were previously onsite at XYZ’s facility to conduct a pre-deployment RF site survey. The WLAN has been deployed according to your recommendations and you are onsite again to perform a post-deployment validation survey. When performing this type of post-deployment RF site survey voice over Wi-Fi, what is an action that must be performed?
A. Spectrum analysis to locate and identify RF interference sources
B. Frequency-band hopping analysis to detect improper RF channel implementations
C. Application analysis with an active phone call on an VoWiFi handset
D. Protocol analysis to discover channel use on neighboring APs
عرض الإجابة
اجابة صحيحة: C
السؤال #4
You are troubleshooting a client issue on a Windows laptop. The laptop can see and connect to 2.4 GHz APs, but is does not even see 5 GHz APs. While evaluating the issue, you determine that this problem is happening for all of the laptops of this model in the organization. Several other tablets connect on channel 48 and channel 52 in the same work areas. What is the likely problem?
A. The clients are configured to use WPA and 5 GHz channels only support WPA2
B. The client drivers are faulty and should be upgraded
C. The antennas in the laptop have insufficient gain to detect the 5 GHz signals
D. The access points are configured to disallow 5 GHz
عرض الإجابة
اجابة صحيحة: A
السؤال #5
You are troubleshooting a client problem with a 2.4 GHz WLAN connection. The client is experiencing surprisingly low data rates during the work day. You analyze the workspace outside of business hours and detect a strong signal with a typical noise floor at the client location. During working hours, the user works with a laptop in the area and uses an external USB hard drive for continuous data access. The user also states that the laptop works as expected on her home network. The user working approximately
A. The AP is overloaded during the work day
B. The drivers in the laptop are corrupt
C. The laptop has a failing wireless adapter
D. The external hard drive is USB 3
عرض الإجابة
اجابة صحيحة: C
السؤال #6
In addition to coverage analysis results, what should be included in a post-deployment site survey report to ensure WLAN users experience acceptable performance?
A. WAN interface analysis results
B. Capacity analysis results
C. Application Layer protocol availability analysis results
D. Layer 4 protocol availability analysis results
عرض الإجابة
اجابة صحيحة: A
السؤال #7
What can an impedance mismatch in the RF cables and connectors cause?
A. Fewer MCS values in the MCS table
B. Excessive VSWR
C. Increased amplitude of the RF signal
D. Increased range of the RF signal
عرض الإجابة
اجابة صحيحة: B
السؤال #8
You have received a report of poor wireless connections on the third floor of a building under your administration. Three individuals have reported the problem. Apparently, the connections are reporting a strong signal, but the users cannot access the Internet. With the problem identified, what is the next logical step in the troubleshooting process?
A. Verify the solution
B. Discover the scale of the problem
C. Perform corrective actions
D. Create a plan of action or escalate the problem
عرض الإجابة
اجابة صحيحة: C
السؤال #9
You are troubleshooting a problem with interference from a non-802.11 device. Given that the device is not a WLAN device, you cannot use a protocol analyzer and have chosen to use a spectrum analyzer. You want to view the signal from the interfering device over time to see the activity that is generating. What common spectrum analyzer view should you use for this analysis?
A. APs
B. Waterfall/Spectrogram
C. Real-time FFT
D. Clients
عرض الإجابة
اجابة صحيحة: B
السؤال #10
What fact is true regarding controllers and Aps in a split-MAC architecture?
A. Using centralized data forwarding, frames leaving the Aps are never tagged Ethernet frames with VLAN identifiers
B. An IP tunnel is established between the AP and controller for AP management and control functions
C. With 802
D. Management and data frames must be processed locally by the AP, while control frames are sent to the controller
عرض الإجابة
اجابة صحيحة: A
السؤال #11
A client complains of low data rates on his computer. When you evaluate the situation, you see that the signal strength is -84 dBm and the noise floor is -96 dBm. The client is an 802.11ac client and connects to an 802.11ac AP. Both the client and AP are 2x2:2 devices. What is the likely cause of the low data rate issue?
A. Weak signal strength
B. CAT5e cabling run to the AP
C. Too few spatial streams
D. Lack of support for 802
عرض الإجابة
اجابة صحيحة: C
السؤال #12
What security method is commonly used for VoIP handsets when the infrastructure does not support OKC or FT roaming?
A. WPA2-Enterprise with EAP-TTLS
B. WPA2-Enterprise with EAP-TLS
C. WPA2-Enterprise with PEAP
D. WPA2-Personal
عرض الإجابة
اجابة صحيحة: C
السؤال #13
You are using a site survey tool for post-implementation validation. You have installed the appropriate adapter driver and imported a floor plan. Now, you want to take the next step in proper tool use. What must you do before gathering survey data after the floor plan is imported?
A. Install iPerf
B. Install WinPCAP
C. Calibrate the floor plan
D. Nothing, you can simply start capturing signal readings
عرض الإجابة
اجابة صحيحة: A
السؤال #14
You are performing a post-implementation validation survey. What basic tool can be used to easily locate areas of high co-channel interference?
A. Throughput tester
B. Laptop-based spectrum analyzer
C. Access point spectrum analyzer
D. Wi-Fi scanner
عرض الإجابة
اجابة صحيحة: A
السؤال #15
Option 43 must be configured to allow access points to locate controllers. In what network service should this option be configured?
A. DHCP
B. LDAP
C. DNS
D. RADIUS
عرض الإجابة
اجابة صحيحة: A
السؤال #16
The IEEE 802.11-2016 standard requires VHT capable devices to be backward compatible with devices using which other 802.11 physical layer specification (PHY)?
A. ERP-PBCC
B. DSSS
C. OFDM
D. HR/DSSS
عرض الإجابة
اجابة صحيحة: B
السؤال #17
You are installing an AP to be used by 23 laptops. All laptops will connect on the 5 GHz frequency band. A neighbor network uses channels 1 and 6. What channel should be used for this AP and why?
A. Channel 6, because it is always best to use this channel
B. A 5 GHz channel, because channels 1 and 6 are 2
C. Channel 1, because it is best to use the channel with the lowest frequency
D. Channel 11, because channels 1 and 6 are in use nearby
عرض الإجابة
اجابة صحيحة: C
السؤال #18
You are using a site survey tool for post-implementation validation. You have installed the appropriate adapter driver and imported a floor plan. Now, you want to take the next step in proper tool use. What must you do before gathering survey data after the floor plan is imported?
A. Calibrate the floor plan
B. Install WinPCAP
C. Nothing, you can simply start capturing signal readings
D. Install iPerf
عرض الإجابة
اجابة صحيحة: B
السؤال #19
A standard PoE injector is use to power an access point requiring 802.3at. CAT6 cabling is in use. What is the maximum distance supported between the access point and the Ethernet switch with the use of a midspan power injector?
A. 100 meters
B. 300 meters
C. 328 meters
D. 200 meters
عرض الإجابة
اجابة صحيحة: B
السؤال #20
You are planning for PoE in a standard office deployment. Which one of these devices is least likely to be a PoE PD?
A. Video camera
B. Access point
C. VoIP phone
D. Ethernet switch
عرض الإجابة
اجابة صحيحة: A

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