What statements about 802.3-2005, Clause 33 (Power-over-Ethernet) are true? C2

What are some problems that may arise in 802.11 WLANs as a result of a hidden node? Choose 3

Given: You have been hired as a consultant to troubleshoot a performance problem with an 802.11 ERP network. You begin troubleshooting by finding a WLAN client device that is experiencing throughput problems and viewing its 802.11 frame exchanges in an 802.11 protocol analyzer. The retransmission rate is 40% instead of the company’s baseline of 3%. How should you proceed in further troubleshooting this problem? Choose 2

.What are some valid reasons for a wireless network administrator to disable 1 and 2 Mbps data rates on a WLAN controller? Choose 2

If an 802.11 RF signal reaches a receiving antenna simultaneously by direct and indirect (reflected)
paths, what effect might the reflected signal have on the signal that took the direct line-of-sight path?

Given: Co-located ERP-OFDM access points can experience throughput degradation due to frame corruption and retransmissions when operating on non-overlapping channels.
What could cause this condition to occur? Choose 3

What are possible causes of the "hidden node" problem with 802.11 WLANs? Choose 3

Given: ABC Company has a 2-story building and one WLAN controller with six lightweight APs.
The
WLAN controller currently provides coverage to 75% of both floors and an adequate amount of capacity for all client devices. The network manager has decided that ABC Company needs 100% coverage, and the existing WLAN controller will not support any additional APs. The Engineering team is moving upstairs and the Sales team is moving downstairs to keep everyone organized and efficient. There will be an occasional need for members of the Engineering team to work downstairs and for the Sales team to work upstairs, and each team is increasing in size by 10% over the next month.
What is the most cost effective upgrade solution that will yield:
1) Continued support of fast/secure roaming between APs
2) Added network capacity to accommodate the 10% growth
3) 100% coverage on both floors of the facility

Given: Joe runs a coffee shop, and as a value added service for his customers he has implemented a
Wi-Fi hotspot. Joe has read news articles about how hackers lurk at hotspots trying to take advantage of unsuspecting users. Joe wants to avoid this problem at his coffee shop. What is the most efficient step that Joe can take to prevent hackers from attacking his customers’ wireless computers at his coffee shop?

Given: As a consultant, you have been hired by ABC Company to implement an outdoor WLAN connection between two buildings that are 2 kilometers (1.24 miles) from each other.
Your first required objective is to create a point-to-point link between the two buildings within the local regulatory body’s 800 mW EIRP maximum. Your second required objective is to provide an industry-standard security solution capable of supporting mutual authentication. As an optional objective, you must minimize the amount of interference to nearby WLAN networks. There are no obstructions between the two buildings. You install an OFDM wireless bridge at each building, configuring one in root mode and the other in non-root mode. You set each radio for 100 mW (+20 dBm) and attach 9 dBi omni- directional
antennas to both. You configure each bridge for WPA2-Enterprise with PEAPv0/EAP-MSCHAPv2 authentication.
Which statement is true about the solution you chose to deploy?