This document presents a student's solution to a computer networks assignment, covering topics such as OSI model encapsulation, TCP/IP communication, network topologies, and digital modulation techniques. The solution includes detailed explanations of encapsulation and decapsulation processes, analysis of frame forwarding in a network with hubs and switches, and a step-by-step description of data transmission from Alice to Bob using HTTP. It also discusses the importance of Point-to-Point Protocol (PPP) in WAN environments and explores various digital modulation techniques like ASK, PSK, and FSK. Finally, the report identifies collision domains in a given network topology and provides a diagrammatic representation. Desklib provides a platform for students to access similar solved assignments and study resources.