YSU Network Midterm Lectures

Chapter 1

Internet Structure

• Unicast

• Broadcast

• Simplex Communication

• Duplex

• Network edge

Packet switching

• Best-effort delivery

• Virtual Circuit
• Asynchronous Transfer Mode

Circuit Switching

• less efficient as packet switching for network utilization

ISP

• CDN

• MNO

Packet delay

• traceroute

• Bitrate

OSI Layer

• Router

Chapter 2

Application Layer

HTTP

• HTTP Request

• HTTP Response

• HTTP Cookie

• HTTP/1.1
• decreased delay in multi-object HTTP requests is key goal of HTTP/2, HTTP/3

• HTTP/2
• If we introduce multiple connection, everyone want to connect more. This is design limitation of .

• HTTP/3

• Network Cache
• Proxy
• CDN

Email

• Design philosophy is

• Email Protocol

DNS

• Name Server

• DNS Record

• DNS Registrar

• DNS Security

P2P

• DHT

Chapter 3

• Multiplexing

• - not important

• - important