Full List CWNA UPDATED ACTUAL Exam
Questions and CORRECT Answers
Will 802.11a OFDM radios interfere with 802.11g radios? - CORRECT ANSWER -
802.11a OFDM clause 17 and 802.11g ERP clause 19 radios transmit in different frequency
ranges and will not interfere with each other. 802.11a radios transmit in the 5 GHz UNII bands,
and 802.11g radios transmit in the 2.4 GHz ISM band.
Will 802.11a OFDM radios interfere with 802.11b HR-DSSS radios? - CORRECT
ANSWER - 802.11a OFDM clause 17 and 802.11b HR-DSSS clause 18 radios transmit in
different frequency ranges and will not interfere with each other. 802.11a OFDM radios transmit
in the 5 GHz UNII bands, and 802.11b HR-DSSS radios transmit in the 2.4 GHz ISM band.
What is the measurement of resistance to an alternating current? - CORRECT ANSWER -
Impedance
IEEE 802.3-2005 clause 33 is commonly known as? - CORRECT ANSWER - Power over
Ethernet (PoE)
All AES processing used within CCMP uses AES with a _____-bit key. - CORRECT
ANSWER - 128
What is the 802.3af amendment now known as? - CORRECT ANSWER - IEEE 802.3-
2005 clause 33, Power over Ethernet
What are the two types of PoE devices defined by the standard? - CORRECT ANSWER -
Powered devices (PDs), power-sourcing equipment (PSE)
A PD compliant with 802.3-2005 clause 33 must reply to the PSE with what? - CORRECT
ANSWER - Detection signature
,What information does the classification signature provide to 802.3-2005 clause 33 power-
sourcing equipment? - CORRECT ANSWER - How much power the PD will need
What are the 802.3-2005 clause 33 PoE classes? - CORRECT ANSWER - Class 0 through
class 4
Why does the PoE PSE provide power greater than what is needed by the PD? - CORRECT
ANSWER - It needs to account for the worst-case scenario, where there may be power loss
due to the cables and connectors between the devices.
What is the maximum draw of any powered device compliant with 802.3-2005 clause 33 or
802.3at-2009? - CORRECT ANSWER - 25.5 watts
If a PD compliant with 802.3-2005 clause 33 does not provide a classification signature, what is
the default class? - CORRECT ANSWER - Class 0
What are the names of the two methods that an endpoint PSE compliant with 802.3-2005 clause
33 can use to provide power? - CORRECT ANSWER - Alternative A and alternative B
What cable pairs do PoE alternative A use to provide power over? - CORRECT
ANSWER - The data pairs
What is a mid-span PSE commonly known as? - CORRECT ANSWER - Power injector
What flavors of Ethernet does 802.3at-2009 compliant mid-span PSE equipment work with? -
CORRECT ANSWER - 10BaseT, 100BaseT, and 1000BaseT
What are two other names for a point-to-multipoint network? - CORRECT ANSWER -
Hub and spoke, star
,What does the acronym WISP stand for? - CORRECT ANSWER - Wireless Internet
Service Provider
What does the acronym SOHO stand for? - CORRECT ANSWER - Small office/home
office
What does the term hotspot typically refer to? - CORRECT ANSWER - A free or pay-for-
use wireless network that is provided as a service by a business
What does the acronym FMC stand for? - CORRECT ANSWER - Fixed mobile
convergence
What is the goal of fixed mobile convergence? - CORRECT ANSWER - To provide a
single mobile device, with a single telephone number, that is capable of switching between
wireless networks (that is, cellular, WiMAX, 802.11, and so forth)
FMC devices are typically capable of communicating via what types of wireless technologies? -
CORRECT ANSWER - Cellular telephone networks, VoWiFi networks
Which 802.11 amendment could possibly standardize FMC? - CORRECT ANSWER -
802.11u
Which 802.11 amendment is often referred to as Wireless Interworking with External Networks
(WIEN)? - CORRECT ANSWER - 802.11u
What does the acronym MSDU stand for? - CORRECT ANSWER - MAC Service Data
Unit
What does the acronym MPDU stand for? - CORRECT ANSWER - MAC Protocol Data
Unit
, What does the acronym PSDU stand for? - CORRECT ANSWER - PLCP Service Data
Unit
What does the acronym PLCP stand for? - CORRECT ANSWER - Physical Layer
Convergence Procedure
What does the acronym PPDU stand for? - CORRECT ANSWER - PLCP Protocol Data
Unit
When the Network layer sends data to the Data-Link layer, it is handed off to the LLC. What
does the data become known as? - CORRECT ANSWER - MAC Service Data Unit
(MSDU)
When the LLC sends the MSDU to the MAC sublayer, the MAC header is added to it. What does
the data become known as? - CORRECT ANSWER - MAC Protocol Data Unit (MPDU)
What is the upper layer of the Physical layer known as? - CORRECT ANSWER - Physical
Layer Convergence Procedure (PLCP)
What is the lower layer of the Physical layer known as? - CORRECT ANSWER - Physical
Medium Dependent (PMD)
What prepares the frame for transmission by taking the frame from the MAC sublayer and
creating the PPDU? - CORRECT ANSWER - Physical Layer Convergence Procedure
(PLCP)
What layer modulates and transmits the data as bits? - CORRECT ANSWER - Physical
Medium Dependent (PMD)
What is the PLCP Service Data Unit (PSDU) also known as? - CORRECT ANSWER -
MAC Protocol Data Unit (MPDU)
Questions and CORRECT Answers
Will 802.11a OFDM radios interfere with 802.11g radios? - CORRECT ANSWER -
802.11a OFDM clause 17 and 802.11g ERP clause 19 radios transmit in different frequency
ranges and will not interfere with each other. 802.11a radios transmit in the 5 GHz UNII bands,
and 802.11g radios transmit in the 2.4 GHz ISM band.
Will 802.11a OFDM radios interfere with 802.11b HR-DSSS radios? - CORRECT
ANSWER - 802.11a OFDM clause 17 and 802.11b HR-DSSS clause 18 radios transmit in
different frequency ranges and will not interfere with each other. 802.11a OFDM radios transmit
in the 5 GHz UNII bands, and 802.11b HR-DSSS radios transmit in the 2.4 GHz ISM band.
What is the measurement of resistance to an alternating current? - CORRECT ANSWER -
Impedance
IEEE 802.3-2005 clause 33 is commonly known as? - CORRECT ANSWER - Power over
Ethernet (PoE)
All AES processing used within CCMP uses AES with a _____-bit key. - CORRECT
ANSWER - 128
What is the 802.3af amendment now known as? - CORRECT ANSWER - IEEE 802.3-
2005 clause 33, Power over Ethernet
What are the two types of PoE devices defined by the standard? - CORRECT ANSWER -
Powered devices (PDs), power-sourcing equipment (PSE)
A PD compliant with 802.3-2005 clause 33 must reply to the PSE with what? - CORRECT
ANSWER - Detection signature
,What information does the classification signature provide to 802.3-2005 clause 33 power-
sourcing equipment? - CORRECT ANSWER - How much power the PD will need
What are the 802.3-2005 clause 33 PoE classes? - CORRECT ANSWER - Class 0 through
class 4
Why does the PoE PSE provide power greater than what is needed by the PD? - CORRECT
ANSWER - It needs to account for the worst-case scenario, where there may be power loss
due to the cables and connectors between the devices.
What is the maximum draw of any powered device compliant with 802.3-2005 clause 33 or
802.3at-2009? - CORRECT ANSWER - 25.5 watts
If a PD compliant with 802.3-2005 clause 33 does not provide a classification signature, what is
the default class? - CORRECT ANSWER - Class 0
What are the names of the two methods that an endpoint PSE compliant with 802.3-2005 clause
33 can use to provide power? - CORRECT ANSWER - Alternative A and alternative B
What cable pairs do PoE alternative A use to provide power over? - CORRECT
ANSWER - The data pairs
What is a mid-span PSE commonly known as? - CORRECT ANSWER - Power injector
What flavors of Ethernet does 802.3at-2009 compliant mid-span PSE equipment work with? -
CORRECT ANSWER - 10BaseT, 100BaseT, and 1000BaseT
What are two other names for a point-to-multipoint network? - CORRECT ANSWER -
Hub and spoke, star
,What does the acronym WISP stand for? - CORRECT ANSWER - Wireless Internet
Service Provider
What does the acronym SOHO stand for? - CORRECT ANSWER - Small office/home
office
What does the term hotspot typically refer to? - CORRECT ANSWER - A free or pay-for-
use wireless network that is provided as a service by a business
What does the acronym FMC stand for? - CORRECT ANSWER - Fixed mobile
convergence
What is the goal of fixed mobile convergence? - CORRECT ANSWER - To provide a
single mobile device, with a single telephone number, that is capable of switching between
wireless networks (that is, cellular, WiMAX, 802.11, and so forth)
FMC devices are typically capable of communicating via what types of wireless technologies? -
CORRECT ANSWER - Cellular telephone networks, VoWiFi networks
Which 802.11 amendment could possibly standardize FMC? - CORRECT ANSWER -
802.11u
Which 802.11 amendment is often referred to as Wireless Interworking with External Networks
(WIEN)? - CORRECT ANSWER - 802.11u
What does the acronym MSDU stand for? - CORRECT ANSWER - MAC Service Data
Unit
What does the acronym MPDU stand for? - CORRECT ANSWER - MAC Protocol Data
Unit
, What does the acronym PSDU stand for? - CORRECT ANSWER - PLCP Service Data
Unit
What does the acronym PLCP stand for? - CORRECT ANSWER - Physical Layer
Convergence Procedure
What does the acronym PPDU stand for? - CORRECT ANSWER - PLCP Protocol Data
Unit
When the Network layer sends data to the Data-Link layer, it is handed off to the LLC. What
does the data become known as? - CORRECT ANSWER - MAC Service Data Unit
(MSDU)
When the LLC sends the MSDU to the MAC sublayer, the MAC header is added to it. What does
the data become known as? - CORRECT ANSWER - MAC Protocol Data Unit (MPDU)
What is the upper layer of the Physical layer known as? - CORRECT ANSWER - Physical
Layer Convergence Procedure (PLCP)
What is the lower layer of the Physical layer known as? - CORRECT ANSWER - Physical
Medium Dependent (PMD)
What prepares the frame for transmission by taking the frame from the MAC sublayer and
creating the PPDU? - CORRECT ANSWER - Physical Layer Convergence Procedure
(PLCP)
What layer modulates and transmits the data as bits? - CORRECT ANSWER - Physical
Medium Dependent (PMD)
What is the PLCP Service Data Unit (PSDU) also known as? - CORRECT ANSWER -
MAC Protocol Data Unit (MPDU)
