ExamGecko
Search Search Login
Home Home / CWNP / CWNA-109
Question list
Search
Search

List of questions

Search
Open VPLUS File
Convert VPLUS to PDF

Related questions

When using a spectrum 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 users workspace, but the interference disappears quickly after just 2 meters. What is the most likely cause of this interference?
ABC Company is planning a point-to-multipoint outdoor bridge deployment with standalone (autonomous) 802.11 bridge units. 802.1X/EAP will be used for bridge authentication. A Linux-based RADIUS server will be used for authentication. What device in the bridge implementation acts as the 802.1X Authenticator?
Which one of the following channels can be used for VHT transmissions according to the 802.11 specification?
What statement describes the authorization component of a AAA implementation?
A WLAN is implemented using wireless controllers. The APs must locate the controllers when powered on and connected to the network. Which one of the following methods is commonly used to locate the controllers by the APs?
An IEEE 802.11 amendment is in the daft state. What impact does this draft amendment have on the 802.11 standard?
You must plan for POE in an office environment. Which one of these devices is least likely to be a POE PSE?
Which one of the following is not a factor considered when calculating the Link Budget for an outdoor point-to- point WLAN bridge link?
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 dual-band 802.11ac AP must be powered by PoE. As a class 4 device, what power level should be received at the AP?

Question 57 - CWNA-109 discussion

Report
Export

What statement about the IEEE 802.11-2016 QoS facility is true?

A.
802.11 control frames are assigned to the 802.11 EF priority queue.
Answers
A.
802.11 control frames are assigned to the 802.11 EF priority queue.
B.
When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.
Answers
B.
When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.
C.
802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.
Answers
C.
802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.
D.
Four 802.1p user priorities are mapped to eight 802.11 transmit queues.
Answers
D.
Four 802.1p user priorities are mapped to eight 802.11 transmit queues.
Suggested answer: C

Explanation:

802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention. 802.11 QoS is based on the Enhanced Distributed Channel Access (EDCA) mechanism, which defines four access categories (ACs) for different types of traffic: Voice, Video, Best Effort, and Background. Each AC has its own transmit queue and contention parameters, such as Arbitration Interframe Space (AIFS), Contention Window (CW), and Transmission Opportunity (TXOP). These parameters determine how long a station has to wait before transmitting a frame and how long it can occupy the channel. Higher priority ACs have shorter AIFS, smaller CW, and longer TXOP, which means they have more chances to access the channel and send more data than lower priority ACs. However, this does not guarantee that higher priority ACs will always win the contention, as there is still a random backoff process involved. Therefore, 802.11 QoS is a statistical service that provides different levels of service quality based on traffic categories.Reference:, Chapter 10, page 403; , Section 6.1

Show Answer
asked 16/09/2024
JIMMY GIOVANNY VARGAS TERAN
35 questions
PreviousPreviousNextNext
User
Your answer:
0 comments
Sorted by

Leave a comment first

ExamGecko

Copyright @2023 ExamGecko | All right reserved

Mail us: [email protected]
About us
Contact us
Twitter X
Facebook
Medium
Convert VPLUS to PDF
Open VPLUS files Easily and Quickly
Privacy Policy
Disclaimer
Terms