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CWAP Assessment Test Questions and correct Answers
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CWAP Assessment TestWhich of the following are two terms that effectively describe the same item? - Question
and answersMPDU & PSDU
The PLCP Service Data Unit (PSDU) is a mirror of the MPDU from the other side. The
MAC layer refers to an 802.11 frame as the MPDU, while the Physical layer refers to
this same 802.11 frame as a PSDU.
When a packet is passed down from the Network layer to the Data-Link layer for
transmission, what is the default maximum size of the MSDU? - Question and
answers2,304 bytes
A client STA is part of a BSS and is building an 802.11 frame to be transmitted to
another client STA in the same BSS. When this frame is created and transmitted to the
AP, how many address fields will it contain? - Question and answersAn 802.11 frame
has up to four address fields. In most instances, only three address fields are actually
needed.
What data rate and modulation can be used to transmit the Short PLCP Header? -
Question and answersLike the Long PLCP, the short PLCP Preamble is transmitted
using DBPSK; however, the Short PLCP Header is transmitted using 2Mbs Differential
Quadrature Phase Shift Keying (DQPSK).
Although Clause 19 devices support data rates of 6, 9, 18, 24, 36, 48 and 54 Mbps, the
standard requires them to support only three data rates. What are those three rates? -
Question and answers6, 12, 24. The mandatory PHYs are ERP-OFDM and ERP-
DSSS/CCK.
Layer 2 retransmissions occur when frames become corrupted. What are some of the
causes of layer 2 retries? - Question and answers-Multipath
-Low SNR
-RF Interference
-Adjacent Cell Interference
(Not co-channel Interference).
If any portion of a unicast frame is corrupted, the cyclic redundancy check (CRC) will
fail, and the receiving radio will not return an ACK frame to the transmitting radio. Co-
channel usually does not cause retries but does add unnecessary medium contention
overhead.
, How many different protocol versions of 802.11 technology are currently defined by the
IEEE? - Question and answersOne.
TPC - Question and answersTransmit Power Control
What is the name given to the period during which station traffic benefits from a
negotiated QoS level with the AP? - Question and answersService Period.
Stations requesting a QoS level for their traffic send an ADDTS request frame
describing the traffic stream with TSPEC and optional TCLAS fields.
When the QoS level is granted, the station benefits from the negotiated QoS level for a
given Service Period (SP). The SP can be repeated at regular intervals, called service
intervals (SIs).
What is the name given to the information element that specifies that specifies the
details of the type of encryption and authentication in use in a WPA/WPA2-compatible
cell? - Question and answersRSN
What is the name of the field that provides information on the number of stations and
current load on the AP? - Question and answersBSS Load Element, often called QBSS
Load Element
What is the name of the element used by APS to order stations to stop sending signals?
- Question and answersIn an 802.11h-compliant deployment, APs can use the Quiet
element in action frames or beacons to stop stations from sending signals on the
current channel.
When an RTS frame is transmitted, the Duration value is set to include the duration of
which of the following? - Question and answers3 SIFS, CTS Frame, Data Frame, ACK
Frame
When a RTS Frame is transmitted, the Duration value is set to include the following:
SIFS--> CTS--> SIFS--> Data--> SIFS--> ACK
In which of the following frames does the Duration/ID field contain an AID as opposed to
a Duration value? - Question and answersPS-Poll
When an ACK frame is generated, the receiver address (RA) field is copied from which
address field of the frame that is being acknowledged? - Question and answersThe
Address2 field that contains the transmitter is used by the acknowledging station to
populate the receiver address (RA) field.
In which of the following unicast scenarios would a non-QoS frame be transmitted be
transmitted instead of a QoS frame? - Question and answers-A non-QoS station
transmit a frame to a QoS station
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