Users and Network support personnel at a mid-sized equipment manufacturer have been discussing the potentialuses and benefits of implementing an indoor WLAN. The network administrator and network manager have requested a meeting of senior management personnel to discuss a WLAN implementation before performing a site survey or taking any implementation steps. Thefirst topic of discussion in the meeting is the corporate policy concerning implementation and use of WLAN technology.
What specific topics are appropriate in this policy meeting? (Choose 2)
Answer : B,C
What answers correctly complete the following sentence?
____________ and ____________ carrier sensefunctions are used to determine if the wireless medium is busy. (Choose 2)
Answer : C,E
You are using a tool that allows you to see signal strength for all APs in the area with a visual representation. It showsyou SSIDs available and the security settings for each SSID.
It allows you to filter by frequency band to see only 2.4 GHz networks or only 5 GHz networks. No additional features are available. What kind of application is described?
Answer : D
Which IEEE 802.11 physical layer (PHY) specifications include support for and compatibility of both OFDM and HR/DSSS? (Choose 2)
Answer : C,D
What factors influence the distance that an RF signal can be effectively received? (Choose
Answer : B,C,E
The IEEE 802.11-2012 standard requires VHT capabledevices to be backward compatible with devices using which other 802.11 physical layer specifications (PHYs)? (Choose 2)
Answer : A,B
As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area.What term describes the rate at which this expansion happens?
Answer : B
The OSI model is a 7-layer model forunderstanding the functions of a communication system. What OSI sublayers are specifically addressed by the IEEE 802.11-2012 standard? (Choose 2)
Answer : C,D
What advantages does using predictive site survey modeling software offer over performinga manual site survey? (Choose 2)
Answer : B,E
What cause of hidden nodes within a BSS would be more likely lead to an increase in collisions and retries?
Answer : D
What component of the 802.11 standard allows stations to reserve access to the RF medium for a specified period of time?
Answer : E
You were previously onsite at XYZs 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 for VoWiFi, what are two steps that must be performed? (Choose 2)
Answer : A,E
A company has hired you to perform a pre-deployment site survey of their facility. During an interview, the network manager informs you thatthe new wireless network must use 5
GHz bands and OFDM, and VoWiFi handsets will be used extensively over the wireless network.
What items do you need to include in the RF site survey report? (Choose 2)
Answer : A,D
ABC Company has a 2.4 and 5 GHz WLAN deployment. DFS functionality is enabled as required by the regulatory domain andAPs use DFS channels as long as radar is not detected. Band steering is also enabled to encourage dual-band clients to use frequency bands with more capacity.
Your performance analysis shows that many dual-band VoWiFi client devices will move back and forth between 2.4 and 5 GHz as the users roam throughout the building. All APs have 2.4 and 5 GHz radios enabled with transmit power adjusted to accommodate relatively similar cell sizes.
This band hopping behavior is viewed by network staff to be undesirable. What is the most likely cause of the unpredictable client band selection behavior?
Answer : C
If an 802.11 RF transmission reaches a receiving antenna simultaneously by direct and reflected paths, what effect will the reflected signal have on the signal that took the direct line-of-sight path?
Answer : C
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