M07 Chapter 11 Review
An incorrect passphrase set on a client device will result in a different preshared key that is generated for a device using WPA 2.0 as a security solution. What will be the result of a mismatched passphrase between the client device and an access point?
Association is established and terminated and no valid IP address
In wireless networking, multipath is the result of what RF behavior?
Reflection
The device driver of a wireless network adapter card is ____________.
Required
Lack of RF connectivity on a wireless client could be caused by which layer of the OSI model?
Layer 1
You provide consulting services for various companies and receive a call from one of your clients that their notebook computers suddenly started experiencing slow data transfers from the WLAN. This company is located in a multitenant building. What could cause a sudden change in performance for the notebook computers?
The access point for a new tenant in the building is set to the same RF channel.
You recently installed an IEEE 802.11g/n wireless network in a small office. One of the employees has been complaining of poor performance and mentioned her notebook computer runs very slowly because of the access point it connects to. What could cause this notebook computer to be performing poorly?
The access point is located at the opposite side of the building from the user's office separated by several walls.
What address would be considered a Windows Automatic Private IP Address, assigned when no DHCP server is available on the LAN?
169.254.0.1
Which of the following network components does not contribute to wired infrastructure problems?
Access points
You can improve the throughput of a WLAN client device by performing which task?
Adding access points
What can solve a hidden node problem caused by an obstruction on an IEEE 802.11n/ac wireless network?
Adding another access point
What factors may have a significant affect the throughput of a wireless LAN system? (Choose three.)
Distance from access point Output power of access point Number of users associated
The throughput of a WLAN can be affected by ____________ or ____________.
Distance from access point, output power of access point
Weak or no signal at a wireless client device can be the result of ____________.
Distance from an access point
No connectivity on a wireless client device can be caused by? (Choose two.)
Disabled radio or wireless adapter Misconfigured client utility
With hidden node distance, client-device to client-device RF communication cannot occur because the client devices are too far apart and not in radio range of each other. What can this be resolved by? (Choose two.)
Increasing the client transmit power Moving the client devices closer together
The received signal strength of a wireless client could be increased by ____________.
Increasing the gain of the antenna on the access point
The RF signal strength seen by a wireless client device from an IEEE 802.11n/ac access point can be improved by ____________.
Increasing the output power on the access point
What is a valid solution to a hidden node problem caused by different technology types?
Mixed mode technology
What does the signal-to-noise ratio represent?
The difference between received signal and noise floor
You are a network administrator and receive a call from a user stating that she cannot access the WLAN. The office contains 50 other users, and nobody else is complaining about the network. What could be a potential problem that would keep this user from connecting to the access point?
The wireless client device has a corrupt device driver.
