NEW QUESTION NO: 7
You administer a WLAN that offers a guest SSID of GUESTNWORK. Users 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. Captive portal issues
B. IP routing issues
C. NTP issues
D. Hardware issues
Answer: B

NEW QUESTION NO: 8
When considering data rates available in HT and VHT PHY devices, in addition to the modulation, coding, channel width, and spatial streams, what impacts the data rate according to the MCS tables?
A. The frequency band in use
B. The client drives
C. The guard interval
D. The height of the antennas
Answer: C
Explanation/Reference:
Reference https://arxiv.org/pdf/1702.03257.pdf

NEW QUESTION NO: 9
When using a spectrum analyzer to look for non-Wi-Fi interference sources, you notice significant interference across the entire 2.4 GHz band (not on a few select frequencies) within the desktop area of a user's workspace, but the interference disappears quickly after just 2 meters. What is the most likely cause of this interference?
A. USB 3 device in the user's work area
B. Bluetooth devices in the user's work area
C. Excess RF energy from a nearby AP
D. Unintentional radiation from the PC power supply
Answer: D
Explanation/Reference:
Reference https://www.reddit.com/r/electronics/comments/2i2s76/
is_the_emf_of_a_pc_without_a_case_much_higher/?st=jdr0fxpm&sh=1a61beda

NEW QUESTION NO: 10
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 8 feet away from this client experiences no problems.
Based on this information, what is the likely cause of the problem?
A. The AP is overloaded during the work day
B. The laptop has a failing wireless adapter
C. The external hard drive is USB 3.0 and is causing a significant increase in the noise floor when in use
D. The drives in the laptop are corrupt
Answer: A

NEW QUESTION NO: 11
In a mesh BSS (MBSS), according to the 802.11-2016 standard, what device connects the mesh to an Ethernet network?
A. Mesh Gate
B. Mesh Switch
C. Mesh Router
D. Mesh Portal
Answer: A
Explanation/Reference:
Reference https://www.cwnp.com/uploads/802-11s_mesh_networking_v1-0.pdf

NEW QUESTION NO: 12
You are the network administrator for ABC Company. Your manager has recently attended a wireless security seminar. The seminar speaker taught that a wireless network could be hidden from potential intruders if you disable the broadcasting of the SSID in Beacons and configured the access points not to respond to Probe Request frames that have a null SSID field.
Your manager suggests implementing these security practices. What response should you give to this suggestion?
A. To improve security by hiding the SSID, the AP and client stations must both be configured to remove the SSID from association request and response frames. Most VLAN products support this.
B. Any tenants in the same building using advanced penetration testing tools will be able to obtain the SSID by exploiting WPA EAPOL-Key exchanges. This poses an additional risk of exposing the WPA key.
C. This security practice prevents manufacturers' client utilities from detecting the SSID. As a result, the SSID cannot be obtained by attackers, except through social engineering, guessing, or use of a WIPS.
D. Any 802.11 protocol analyzer can see the SSID in clear text in frames other than Beacons frames. This negates any security benefit of trying to hide the SSID in Beacons and Probe Response frames.
Answer: D

NEW QUESTION NO: 13
What common feature of MDM solutions can be used to protect enterprise data on mobile devices?
A. Onboarding
B. Self-registration
C. Containerization
D. Over-the-air registration
Answer: A

NEW QUESTION NO: 14
You manage a WLAN with 100 802.11ac access points. All access points are configured to use 80 MHz channels. In a particular BSS, only 40 MHz communications are seen. What is the likely cause of this behavior?
A. The AP is improperly configured to use only 40 MHz of the 80 MHz allocated bandwidth
B. The short guard interval is also enabled.
C. All clients implement single spatial stream radios
D. The clients are all 802.11n STAs or lower
Answer: A

NEW QUESTION NO: 15
You are deploying a WLAN monitoring solution that utilizes distributed sensor devices. Where should sensors be deployed for best results?
A. Closer to the APs
B. Every 20 feet and alongside each AP
C. Closer to the client devices
D. In critical areas where WLAN performance must be high
Answer: C

NEW QUESTION NO: 16
What 802.11 PHY uses available space in very low frequency ranges that is not in use at the time by broadcast video signals?
A. TVNT
B. DSSS
C. SIG
D. DMG
Answer: B

NEW QUESTION NO: 17
You are managing a wireless access point in autonomous mode using the Web based interface. You capture traffic during this management task and notice that you can see the HTML code of the Web pages for access point management. What error in administration could be the cause of the security concern?
A. HTTP is in use instead of HTTPS
B. IPsec is not in use of the management connection as recommended
C. WPA2 is disabled on the WLAN
D. A VPN with the AP is not established
Answer: A