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NEW QUESTION 50
An IEEE 802.11 amendment is in the daft state. What impact does this draft amendment have on the 802.11 standard?
- A. No impact: Draft amendments do not become part of the standard until a working group is formed.
- B. Devices will be released based on the draft amendment and the draft amendment features are part of the standard.
- C. No impact: Until an amendment is ratified, it does not become part of the standard.
- D. The standard is changed to reflect the new capabilities as soon as an amendment enters the draft stage.
Answer: C
NEW QUESTION 51
A client STA must choose the best AP for connectivity. As part of the evaluation, it must verify compatible data rates. What can the client STA use to verify that an AP supports the same data rates that it supports?
- A. Data frames sent between the AP and current client STAs
- B. Authentication frames transmitted by the other client STAs
- C. Probe request frames transmitted by other client STAs
- D. Beacon frames transmitted by the AP
Answer: C
Explanation:
https://supportforums.cisco.com/t5/wireless-mobility-documents/802-11-sniffer-capture-analysis- management-frames-and-open-auth/ta-p/3120622
NEW QUESTION 52
An 802.11 WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB of loss.
The cable is connected to an antenna with 16 dBi of gain.
What is the EIRP power output?
- A. 250 mW
- B. 10 mW
- C. 1000 mW
- D. 50 mW
- E. 25 mW
Answer: C
NEW QUESTION 53
You are troubleshooting a controller-based AP that is unable to locate the controller. DHCP is not use and the controller is located at 10.10.10.81/24 while the AP is on the 10.10.16.0/24 network. What should be inspected to verify proper configuration?
- A. DBS
- B. AP hosts file
- C. NTP
- D. BOOTP
Answer: B
NEW QUESTION 54
When considering data rates available in HT and VHT PJY devices, in addition to the modulation, coding, channel width, and spatial streams, what impacts the data rate according to the MCS tables?
- A. The client drivers
- B. The height of the antennas
- C. The Frequency band in use
- D. The guard interval
Answer: D
NEW QUESTION 55
What distinguishes an independent basic service set (IBSS) from an infrastructure basic service set (BSS)?
- A. An IBSS does not require beacon frames, but a BSS does.
- B. An IBSS does not have a distribution system (DS), but a BSS does.
- C. An IBSS does not support any 802.11ac enhancements, but a BSS does.
- D. An IBSS does not support 802.11 authentication or association, but a BSS does.
Answer: B
NEW QUESTION 56
An RF signal sometimes bends as it passes through some material other than free space.
What is the term that describe this behavior?
- A. Reflection
- B. Warping
- C. Scattering
- D. Refraction
Answer: D
NEW QUESTION 57
You support a WLAN using dual- band 802.11ac three stream access points. All access points have both the 2.4 GHz and 5 GHz radios enabled and use 40 MHz channels in 2.4 GHz. A manager is concerned about the fact that each access point is connected using a 1 Gbps Ethernet link. He is concerned that the Ethernet link will not be able to handle the load from the wireless radios. What do you tell him?
- A. His concern is invalid because the AP will compress all data before transmitting it onto the Ethernet link.
- B. His concern is valid and the company should upgrade all Ethernet link to 10 Gbps immediately.
- C. Due to 802.11 network operations and dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gbps Ethernet link .
- D. His concern is valid and the company should immediately plan to run a second 1 Gbps Ethernet link to each AP.
Answer: B
NEW QUESTION 58
What term describes the effect of increasing the intensity of an RF wave with an antenna by focusing the energy in a specific direction?
- A. Passive Gain
- B. Active Amplification
- C. RF Flooding
- D. Distributed Radiation
- E. Beam Compression
Answer: A
NEW QUESTION 59
When implementing PoE, what role is played by a switch?
- A. Power splitter
- B. PSE
- C. Midspan injector
- D. PO
Answer: B
NEW QUESTION 60
An 802.11-based network uses an AP and has several connecting clients. The clients include iPhones, iPads, laptops and one desktop. What WLAN use case is represented?
- A. WPAN
- B. BSS
- C. IBSS
- D. Ad-hoc
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION 61
What are two channel modes specified by the 802.11n (High Throughput) PHY? (Choose 2)
- A. 160 MHz
- B. 40/80 MHz
- C. 20/40 MHz
- D. 80 MHz
- E. 22 MHz
- F. 20 MHz
Answer: C,F
NEW QUESTION 62
Your manager asked you to locate a solution that allows for centralized monitoring of WLAN performance over time. He wants a single pane of glass for administration and monitoring of the solution. What do you recommend?
- A. Overlay WLAN monitoring solution
- B. AP-based spectrum analysis
- C. Laptop-based protocol analyzers
- D. Laptop-based spectrum analyzers
Answer: A
NEW QUESTION 63
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 client drivers are faulty and should be upgraded.
- B. The clients are configured to use WPA and 5 GHz channels only support WPA2.
- C. The access points are configured to disallow 5 GHz.
- D. The antennas in the laptop have insufficient gain to detect the 5 GHz signals.
Answer: D
NEW QUESTION 64
When implementing PoE, what role is played by a switch?
- A. Power splitter
- B. PD
- C. PSE
- D. Midspan injector
Answer: C
NEW QUESTION 65
Prior to association, what parameter can 802.11 client devices measure and use to select the optimal access point for association?
- A. Retry rate of probe request and response frames
- B. Signal strength of access point beacons received
- C. Average round trip time to reach the Internet DNS server
- D. Average round trip time to reach the IP router
- E. Proximity to potential access points
Answer: B
NEW QUESTION 66
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)
- A. Improves service quality for real-time applications at greater distances
- B. Increases in receive sensitivity enhance RTLS location accuracy
- C. Better link reliability between 802.11a/b/g client devices and 802.11ac APs
- D. Introduces "fast transition" roaming protocols for VoWiFi phones
- E. Stronger security with more robust encryption modes.
Answer: A,C
NEW QUESTION 67
Which one of the following channels can be used for VHT transmissions?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 68
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