Online Access Free CWAP-405 Practice Test

When a data frame is encrypted with WPA2, to which portion of the frame is the encryption applied?

• A.Frame body excluding the LLCPDU
• B.Frame body and MAC Header
• C.Frame body including the LLCPDU
• D.The whole MPDU

Which statement is true regarding the Association Identifier (AID) used in IEEE 802.11 WLANs?

• A.The AID has a maximum value of 2007, and resides in the duration/ID field of a PS-Poll frame.
• B.The AID is used by the access point in EDCA mode to reduce duplicate transmissions when sending multicasts.
• C.The AID field is present only in Beacons frames.
• D.The client station is assigned an AID value in the 802.11 authentication response frame.
• E.The AID has a maximum value of 2048, and is used to uniquely identify a wireless client station associated with an access point.

What is the purpose of a PHY preamble?

• A.It indicates to the PHY the modulation that shall be used for transmission (and reception) of the PSDU.
• B.It provides a cyclic redundancy check (CRC) for the receiving station to validate that the PLCP header was received correctly.
• C.It communicates important information about the PSDU's length, rate, and upper layer protocol- related parameters.
• D.It provides the receiver(s) with an opportunity for RF channel synchronization prior to the start of the PLCP header.

Given: The default Beacon interval is 100 Time Units which equates to 1024 μs.
Which statement is true regarding when Beacon frames will be transmitted when using this default value?

• A.The AP will attempt to transmit a Beacon frame 1024 μs after the previous beacon; however, due to medium contention the frame may be delayed.
• B.Beacon frames will be transmitted exactly every 1024 μs.
• C.The 100 Time Units is a guide to help STAs in Power Save mode know when to wake up, in reality Beacons may be transmitted slightly earlier or later
• D.The AP will attempt to transmit a Beacon frame according to a fixed schedule every 100 Time Units; however, due to medium contention the Beacons may be delayed.

Prior to a retransmission what happens to the CWmax value?

• A.Increases by 1
• B.Set to the value of the AIFSN
• C.Reset to 0
• D.Doubles and increases by 1