i SAITEJASVI VALLABHANENI EE450 SESSION # 5 LAB 2: OPNET (WIRELESS LAN)ii ABSTRACT: The IEEE 802.11 standard provides wireless connectivity to computerized stations that require rapid deployment. The Medium Access Control (MAC) sublayer in the standard includes two fundamental access methods: Distributed Coordination Function (DCF) and the Point Coordination Function (PCF). DCF uses CSMS/CA approach while PCF is based on polling to determine the next station to transmit. In this RIVERBED IT Guru Lab assignment we will create different scenarios concerned with wireless LANs. The four scenarios that we are going to create are DCF, DCF_FRAG, DCF_PCF, DCF_PCF_FRAG. Then we choose required statistics to be observed and then compare the results in all the four scenarios. We find the effects of using fragmentation and PCF on the statistics selected such as delay, load, throughput, medium access delay and retransmission