This document summarizes a lab final project on Bangladesh Computer Council. It discusses assembling and disassembling a PC along with a physical diagram and component prices. It then analyzes the advantages and disadvantages of a hybrid network topology that is a mix of bus and star topologies. Some key advantages include being able to access data from any computer to the server and flexibility. Key disadvantages include complexity and expense. It also outlines the network topology security system, including end-to-end encryption, private connections through the internet, and applying centralized security policies.