This document covers assignments related to wireless network and communication including modulation techniques such as Amplitude Shift Keying, Frequency Shift Keying, Phase Shift Keying, Differential Phase shift keying, and more. It also explains the Error Detection Process for Cyclic Redundancy Check (CRC), WLAN infrastructure mode, ad-hoc mode, TCP and OSI protocols for wired and wireless LANs, and the drawbacks of square and circle shapes cells for cellular communications.