CWNA-107 Free Practice Test

What is always required to establish a high quality 2.4 GHz RF link at a distance of 3 miles (5 kilometers)?

1. A. Grid antennas at each endpoint
2. B. A Fresnel Zone that is at least 60% clear of obstructions
3. C. A minimum antenna gain of 11 dBi at both endpoints
4. D. Minimum output power level of 2 watts

Correct Answer: B

You are evaluating access points for use in the 5GHz frequency band. What PHY supports this band and supports 80 MHz channels?

1. A. OFDM
2. B. HT
3. C. VHT
4. D. ERP

Correct Answer: C
Reference https://www.cwnp.com/802-11ac-vht-just-the-facts/

What wireless networking term describes the increase of RF energy in an intentional direction with the use of an antenna?

1. A. Directed Radiation
2. B. Active Amplification
3. C. Passive Gain
4. D. Beam Digression

Correct Answer: C
Reference
https://books.google.com.pk/books?id=saC_2j-IwwIC&pg=PA51&lpg=PA51&dq=passive+gain+increase+of+R

A WLAN is implemented using wireless controllers. The APs must locate the controllers when powered on and connected to the network. Which one of the following methods is commonly used to locate the controllers by the APs?

1. A. DHCP
2. B. GRE
3. C. NTP
4. D. SNMP

Correct Answer: A
Reference
https://books.google.com.pk/books?id=YEW0DAAAQBAJ&pg=SA7-PA9&lpg=SA7-PA9&dq=methods+is+co

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?

1. A. Inverse square law
2. B. Ohm’s law
3. C. Fresnel zone thinning
4. D. MU-MIMO

Correct Answer: A