Internet and Access Networks, Talha Ibn Aziz, Lecturer at the Department of CSE at IUT, covers internet and access networks, as well as what roles access networks play on the internet. Aziz starts with discussing the different ways in defining what the Internet is. A traditional definition of a computer network connecting millions of devices is compared to alternate definitions of the Internet, which are broken down by using either basic components or functions. A more current age definition includes laptops, smartphones, tablets, TV gaming consoles, etc. Aziz also explains different components of the Internet, including hosts, communication links, packet switches, transmission rates, routes or paths, end systems, and Internet Service Providers (ISPs). Different ISPs include residential ISPs (local cable, DSL, telephone companies), corporate ISPs, University ISPs, etc. Another alternative view of the Internet (a service view of the Internet) defines the Internet as an infrastructure that provides services to applications. Examples of these distributed applications include email, web surfing, social networks, voice-over IP, games and video streaming. Internet Application Programming Interface and network device protocols are also discussed. The lecture ends with an explanation of the Network Edge and End Systems including clients and servers, Access Networks, and the Network Core.