You have just rearranged the access points on your small office network. Now a g
ID: 3697172 • Letter: Y
Question
You have just rearranged the access points on your small office network. Now a group of employees complains that they cannot reliably get their workstations to connect with a new 802.11ac access point. You have confirmed that the workstations are using the correct SSID, security type, and passphrase. You have also confirmed that the access point is on and functioning properly because when you stand in the computer room where it’s located, you can connect to the access point from your smartphone. Which of the following is likely preventing the other users’ workstations from associating with the new access point?
A. The users are attempting to log on using incorrect user IDs.
B. The workstations are located beyond the access point’s range.
C. The workstations are set to use 802.11g.
D. The users have turned off their wireless antennas.
E. The workstations’ wired NICs are causing addressing conflicts with their wireless NICs.
Explanation / Answer
The users are attempting to log on using incorrect user IDs.
Problem
When you attempt to log in through access points, receive the problems related to the user ID or password is incorrect.
Investigation
Perform these steps to resolve the problem:
The workstations are located beyond the access point’s range.
An operating method applied to an access point, wherein the access point is configured to be connected with a plurality of workstations, and the access point comprises a transmission module and a receiving module, the operating method comprising following steps:
Sensing, through the receiving module, a channel status of a transmission channel between the access point and the workstations;
Determining whether to process a data transmission task through the transmission module according to the channel status and a present clear channel assessment (CCA) threshold value;
Calculating, through the transmission module, a transmission error rate according to the fact that the data transmission task succeeds or not; and dynamically adjusting the present CCA threshold value according to the transmission error rate.
The ability to the network for extends the wireless access, beyond the limited range of individual access point. Multiple access points are distributed over a large area to provide a wider range of coverage.
The workstations are set to use 802.11g.
The 802.11g setting will vary depending on the router in use. Devices will then automatically select the fastest commonly supported mode to communicate. Note that choosing a subset of the available modes will prevent some devices also, choosing a subset of the available modes might cause interference with nearby legacy networks, and might cause nearby legacy devices to interfere with your network.
The users have turned off their wireless antennas.
. Be patient when you turn on antenna it may take time for your PC to recognize that the antenna is on. After a few seconds try to connect to a network the way you normally do. Why to turn it off by accident. Find the switch and turn it back on. First look to the sides of the laptop typically it will be a slide switch marked with an antenna with semi-circles around it. Some laptops also make this a button next to the monitor.
The workstations’ wired NICs are causing addressing conflicts with their wireless NICs.
The workstation has three NICs configured. One uses Bridged/wired, one uses Bridged/wifi and one uses host only. The one bridged to wifi always gives "Windows has detected an IP address conflict." It does this on every wifi network, even ones that are otherwise empty - which is how I know it's bogus. It doesn't matter which of the three workstation NICs is mapped to the wifi adapter, it's always the wifi connection that fails.
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