Cwap questions with correct answers

2 sub-layers of the Data-link layer (L2) Answer LLC & MAC MSDU Answer When L3 packet is handed to L2 the LLC header is added it becomes Mac Service Data Unit Max MSDU size Answer 2304 MPDU Answer When MAC sublayer header is added to MSDU it becomes Mac Protocol Data Unit — commonly called an 802.11 frame 2 sub-layers of the PHY layer(L1) Answer PLCP & PMD PLCP ( Physical Layer Convergence Procedure) Answer prepares frame for transmission by taking it from the MAC & creating the PPDU Preamble Answer added by the PLCP (along w/ a PHY header) & used for synchronization between Tx & Rx radios. 802.11 services are divided into 2 categories Answer Station Service (SS) & Distribution System Service (DSS) Station Services (SS) include the following Answer 1. Authentication 2. Deauthentication 3. Encryption 4. MSDU delivery 5.DFS 6.TPC 7. Higher level timer sync 8. Qos traffic scheduling