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?

A. Inverse square law

B. Ohm's law

C. Fresnel zone thinning

D. MU-MIMO

A client complains of low data rates on his computer. When you evaluate the situation, you see that the signal strength is -84 dBm and the noise floor is -96 dBm. The client is an 802.11ac client and connects to an 802.11acAP. Both the client and AP are 2x2:2 devices. What is the likely cause of the low data rate issue?

A. Weak signal strength

B. Too few spatial streams

C. Lack of support 802.11n

D. CAT5e cabling run to the AP

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?

A. USB 3 devices in the user's work area

B. Bluetooth devices in the user's work area

C. Excess RF energy from a nearby AP

D. Unintentional radiation from the PC power supply

You are installing an AP to be used by 23 laptops. All laptops will connect on the 5 GHz frequency band. A neighbor network uses channels 1 and 6. What channel should be used for this AP and why?

A. Channel 6, because it is always best to use this channel

B. A 5 GHz channel, because channels 1 and 6 are 2.4 GHz channels they have no impact on the decision

C. Channel 1, because it is best to use the channel with the lowest frequency

D. Channel 11, because channels 1 and 6 are in use nearby

Your consulting firm has recently been hired to complete a site survey for a company. Your engineers use predictive design software for the task, but the company insists on a pre-deployment site visit.

What task should be performed as part of the pre-deployment visit to prepare for a predictive design?

A. Evaluate the building materials at ABC's facility and confirm that the floor plan documents are consistent with the actual building

B. Install at least one AP on each side of the exterior walls to test for co-channel interference through these walls

C. Test several antenna types connected to the intended Aps for use in the eventual deployment

D. Collect information about the company's security requirements and the current configuration of their RADIUS and user database servers

You administer a WLAN that offers a guest SSID of GUESTNWORK. Users connect to the GUESTNWORK SSID, but report that they cannot browse the Internet. The devices simply report no Internet connection. What common problem causes this scenario?

A. NTP issues

B. Hardware issues

C. IP routing issues

D. Captive portal issues

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 reposting 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. Perform corrective actions

B. Discover the scale of the problem

C. Create a plan of action or escalate the problem

D. Verify the solution

When replacing the antenna of a WLAN device with a similar antenna type that has a higher passive gain, what antenna characteristic will decrease?

A. Range

B. Beam width

C. Active gain D. Receive sensitivity

What statement about 802.3, Clause 33 Power over Ethernet is true?

A. Only midspan PSEs are supported.

B. The lowest voltage drop is achieved when using CAT6 instead of Cat5 or CAT5e.

C. Only endpoint PSEs are supported.

D. When using CAT5 cabling, you increase the maximum draw available to the PD over that available with CAT6.

What Linux shell command can be used to view the hardware and PHY capabilities of a wireless adapter in detail including channel widths, output power settings, channels supported, and more?

A. ifconfig

B. iw phy

C. netsh wlan show device

D. iwconfig