Flashcards
MAC Arquitecture
Cards in this deck (20)
- 1The LLC sublayer send it to the MAC sublayer, the MAC header information is added to it to identify it The payload of a wireless 802.11 data frame is the upper layer 3–7 informationMSDU
- 2MSDU is now encapsulated in it. A simple definitionfor it is that it is an 802.11 frame.MPDU
- 3MAC Header Frame control information, duration information, MAC addressing, and sequence control information are all found in the:MAC Header
- 4Enables delivery of MSDUs between the Distribution System (DS) and a non-IEEE-802.11 Local Area Network (LAN)Integration Service (IS)
- 5Its job is to first remove the 802.11 header and trailer and then encase the MSDU VoIP payload inside an 802.3 Ethernet frameIntegration Service (IS)
- 6 The MAC address of the original sending station Can originate from either a wireless station or the wired networkSource Address (SA)
- 7 The MAC address that is the final destination of the layer 2 frame May be a wireless station or could be a destination on the wired network such as a server or a routerDestination Address (DA)
- 8The MAC address of an 802.11 radio that is transmitting the frame onto the half-duplex 802.11 mediumTransmitter Address (TA)
- 9The MAC address of the 802.11 radio that is intended to receive the incoming transmission from the transmitting stationReceiver Address (RA)
- 10(Re/Di) Association Request/response Probe Request/Response Beacon (De) Authentication Are examples of:802.11 Management Frames
- 11Power Save Poll, Request/Clear to Send, Ack, Block Ack, Contention-free-end; are examples of:802.11 Control Frames
- 12Data, Null, Data + CF, CF poll/Ack, QoS are example of:802.11 Data Frames
- 13are essentially the heartbeat of the wireless network The AP of a basic service set sends them while the clients listen for themBeacon frames
- 14Indicate at least 5 pieces of data that can be found on beacon frames:Spread Spectrum Parameter sets, Channel, data rates, RSN capabilities, Service Set capabilities, SSID, QoS capabilities
- 15WLAN station moves to each channel as per channel list and waits for beacon frames. These frames are buffered and are used to decode and extract information about BSSs. This will save battery power as it does not need to transmitPassive scanning
- 16The client station transmits management frames known as probe requests These probe requests either can contain the SSID of the specific WLAN that the client station is looking for or can look for any SSIDActive Scanning
- 17This must occur before an 802.11 client can pass traffic through the AP to another device on the network Is the first of two steps required to connect to the 802.11 Basic Service SetAuthentication
- 18It provides authentication without performing any type of client verification It is essentially an exchange of hellos between the client and the APOpen System Authentication
- 19Shared Key Authentication uses this authentication method when authenticating client stations and requires that a static WEP key be configured on both the station and the APWEP
- 20Happens after the station has authenticated with the AP, it becomes a member of a Basic Service Set (BSS) (if permission is given by AP), and the client station can send data through the AP and on to the Distribution System Medium.Association
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- Informática y Comunicaciones Flashcards on MAC Arquitecture, created by Hugo Castro Gould on 27/07/2022.
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- Hugo Castro Gould
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