CWNA-107 Online Practice Questions and Answers

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

You are tasked with performing a throughput test on the WLAN. The manager asks that you use open source tools to reduce costs. What open source tool is designed to perform a throughput test?

A. IxChariot

B. Python

C. PuTTy

D. iPerf

You are troubleshooting a WLAN problem and you suspect hidden node as the cause. What should you look for in a protocol analyzers?

A. Frames with the HN bit set to 1

B. Frames with the retry bit set to 0

C. Frames transmitted from the AP without acknowledgement

D. Retransmitted frames from multiple STAs at higher rates than other STAs

An 802.11 WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB of loss. The cable is connected to an antenna with 16 dBi of gain.

What is the EIRP power output?

A. 2 W

B. 250 mW

C. 1000 mW

D. 500 mW

You recently purchased four laptops containing dual-band 802.11ac adapters. The laptops can connect to your 2.4 GHz network, but they cannot connect to the 5 GHz network. The laptops do not show the 5 GHz SSIDs, which are different that the 2.4 GHz SSIDs. Existing devices can connect to the 5 GHz SSIDs with no difficulty. What is the likely problem?

A. Interference from no-Wi-Fi sources

B. Faulty drivers

C. DoS attack

D. Interference from other WLANs

ABC Company is planning to install a new 802.11ac WLAN, but wants to upgrade its wired infrastructure first to provide the best user experience possible. ABC Company has hired you to perform the RF site survey. During the interview with the network manager, you are told that the new Ethernet edge switches will support VoIP phones and 802.11 access points, both using 802.3 PoE.

After hearing this information, what immediate concerns do you note?

A. The power budget in the edge switches must be carefully planned and monitored based on the number of supported PoE devices.

B. The edge Ethernet switches should support Ether-channel to get the best results out of the network.

C. VoIP phones and 802.11 access points should not be powered by the same edge switch due to distortion.

D. If the switches are in optimal locations for VoIP phones, they are likely to be suboptimal locations for

802.11 APs

You are deploying a WLAN with the access points configured for 10 mW of output power on the 2.4 GHz radios and 20mW of output power on the 5GHz radios. Some semi-directional antennas are also in use. What kind of deployment is described?

A. High density

B. SOHO

C. Standard office

D. Residential

A natural disaster has occurred in a remote area that is approximately 40 miles from the response team headquarters. The response team must setup a local wireless network using 802.11 WLAN access points. What is the best method, of those listed, for implementation of a network backhaul for communications across the Internet in this scenario?

A. Temporary wired cable

B. 802.11 bridging

C. Cellular/LTE

D. Temporary wired DSL

In which plane of the three networking planes is an access point configured by a WLAN controller?

A. Control

B. Management

C. Security

D. Data

What phrase defines Equivalent Isotropically Radiated Power (EIRP)?

A. Power supplied from the transmission line to the antenna input

B. The power output from the radio after cable losses

C. The power output from the radio into the RF cable

D. The highest RF signal strength that is transmitted from a given antenna