CWNA – 108 UPDATED Actual Exam
Questions and CORRECT Answers
An radio frequency wave is weaker after traveling through some material, what is the term
used to describe what happened as the radio frequency wave passed through the material? -
CORRECT ANSWER- ✔✔Absorption
What occurs naturally as an radio frequency wave travels through space? - CORRECT
ANSWER- ✔✔Free Space Path Loss
What is a relative unit of measurement that allows comparison of the amplitude between two
signals? - CORRECT ANSWER- ✔✔dB
An access point transmits with an output power level of 25 mW and uses a 3 dBi antenna.
What is the EIRP? - CORRECT ANSWER- ✔✔17 dBm
When an radio frequency link in a bridging implementation spans more than 7 miles, what
must be considered that need not typically be considered otherwise? - CORRECT ANSWER-
✔✔Earth bulge
What is an Intentional Radiator? - CORRECT ANSWER- ✔✔The power provided to the
antenna including radio output power and all cable and connector losses
What multi-antenna technology used at the transmitter to improve the signal received at the
receiver was introduced in 802.11n and standardized in 802.11ac? - CORRECT ANSWER-
✔✔Transmit beamforming
What new transmission technology was introduced in 802.11ac that allows an access point to
transmit to more than one client station concurrently? - CORRECT ANSWER- ✔✔MU-
MIMO
When installing an omni-directional Single Input Single Output antenna for outdoor
coverage, what kind of mount is commonly used that includes u-brackets? - CORRECT
ANSWER- ✔✔Pole or mast mount
, What organization certifies equipment to interoperate with other 802.11-based equipment? -
CORRECT ANSWER- ✔✔Wi-Fi Alliance
When a new PHY is to be created for the 802.11 standard, what is formed first? - CORRECT
ANSWER- ✔✔Working group
What PHY operates in 2.4 GHz and is capable of a max of 11 Mbps? - CORRECT
ANSWER- ✔✔HR/DSSS
In addition to modulation, guard interval, channel width, and the number of spatial streams,
what affects the data rate according to the 802.11-2016 Modulation Coding Scheme tables? -
CORRECT ANSWER- ✔✔Coding
What 2.4 GHz channels are available worldwide in all regulatory domains? - CORRECT
ANSWER- ✔✔1-11
When multiple Access points are used with a shared distribution system, such as Ethernet,
what kind of Wireless LAN service set is in use? - CORRECT ANSWER- ✔✔ESS
What is typically mapped to the MAC address of the access point when only a single BSS is
implemented? - CORRECT ANSWER- ✔✔BSSID
What kind of roaming may take place in Layer 1 roaming? - CORRECT ANSWER-
✔✔Roaming from 2.4 GHz to 5 GHz
When is an authentication response frame used? - CORRECT ANSWER- ✔✔The 802.11
standard only specifies an authentication frame and not request and response frames for
authentication
What is required before a Block Acknowledgement can be used? - CORRECT ANSWER-
✔✔A block acknowledgement request exchange must take place
Questions and CORRECT Answers
An radio frequency wave is weaker after traveling through some material, what is the term
used to describe what happened as the radio frequency wave passed through the material? -
CORRECT ANSWER- ✔✔Absorption
What occurs naturally as an radio frequency wave travels through space? - CORRECT
ANSWER- ✔✔Free Space Path Loss
What is a relative unit of measurement that allows comparison of the amplitude between two
signals? - CORRECT ANSWER- ✔✔dB
An access point transmits with an output power level of 25 mW and uses a 3 dBi antenna.
What is the EIRP? - CORRECT ANSWER- ✔✔17 dBm
When an radio frequency link in a bridging implementation spans more than 7 miles, what
must be considered that need not typically be considered otherwise? - CORRECT ANSWER-
✔✔Earth bulge
What is an Intentional Radiator? - CORRECT ANSWER- ✔✔The power provided to the
antenna including radio output power and all cable and connector losses
What multi-antenna technology used at the transmitter to improve the signal received at the
receiver was introduced in 802.11n and standardized in 802.11ac? - CORRECT ANSWER-
✔✔Transmit beamforming
What new transmission technology was introduced in 802.11ac that allows an access point to
transmit to more than one client station concurrently? - CORRECT ANSWER- ✔✔MU-
MIMO
When installing an omni-directional Single Input Single Output antenna for outdoor
coverage, what kind of mount is commonly used that includes u-brackets? - CORRECT
ANSWER- ✔✔Pole or mast mount
, What organization certifies equipment to interoperate with other 802.11-based equipment? -
CORRECT ANSWER- ✔✔Wi-Fi Alliance
When a new PHY is to be created for the 802.11 standard, what is formed first? - CORRECT
ANSWER- ✔✔Working group
What PHY operates in 2.4 GHz and is capable of a max of 11 Mbps? - CORRECT
ANSWER- ✔✔HR/DSSS
In addition to modulation, guard interval, channel width, and the number of spatial streams,
what affects the data rate according to the 802.11-2016 Modulation Coding Scheme tables? -
CORRECT ANSWER- ✔✔Coding
What 2.4 GHz channels are available worldwide in all regulatory domains? - CORRECT
ANSWER- ✔✔1-11
When multiple Access points are used with a shared distribution system, such as Ethernet,
what kind of Wireless LAN service set is in use? - CORRECT ANSWER- ✔✔ESS
What is typically mapped to the MAC address of the access point when only a single BSS is
implemented? - CORRECT ANSWER- ✔✔BSSID
What kind of roaming may take place in Layer 1 roaming? - CORRECT ANSWER-
✔✔Roaming from 2.4 GHz to 5 GHz
When is an authentication response frame used? - CORRECT ANSWER- ✔✔The 802.11
standard only specifies an authentication frame and not request and response frames for
authentication
What is required before a Block Acknowledgement can be used? - CORRECT ANSWER-
✔✔A block acknowledgement request exchange must take place
