contents_list.md

Contents

Chp 1 Computer Networks and the Internet

• Contents * [Chp 1 Computer Networks and the Internet](#chp-1-computer-networks-and-the-internet) * [Chp 2 Application Layer](#chp-2-application-layer) * [Chp 3 Transport Layer](#chp-3-transport-layer)
• 1.1 what is the Internet? * inter + network
  • components of the Internet
    • H/W
    • S/W
• Overview
• 1.2 Network Edge
  • Access Networks
    • ex1. Digital Subscriber Line
    • ex2. Cable Network
    • ex3. Home Network
    • ex4. Enterprise / Institutional Network
    • ex5. Wireless Access Networks
  • Physical Media
• 1.3 Network Core
  • Two fundamental approaches to moving data
    • circuit switching VS packet switching
  • A Network of Networks
    • ISP hierarchy structure
• 1.4 Evaluation Metrics in networks
  • delay
  • loss
  • throughput
• 1.5 Simplified OSI Model
  • 5 layers

Chp 2 Application Layer

• 2.1 Structure of Network Application
  • client-server model VS P2P model
  • File distribution
    • P2P: BitTorrent
• 2.2 Protocol of Application Layer
  • defines
  • protocols by occasion
  • required transport services by occasion
• 2.3 Web Servers
  • HTTP response time
    • non-persistent HTTP
    • persistent HTTP
  • cookies
  • Web Caches: reduce delay
    • 1. origin server + fatter access link
    • 2. origin server + local web cache
• 2.4 Mail Servers
  • push: SMTP
  • pull: POP3, IMAP, HTTP
• 2.5 DNS Servers
  • DNS services
  • DNS servers
    • by iterated query
    • by recursive query
    • by caching
• 2.6 video streaming and content distribution networks
  • Content Distribution Networks
    • Netflix

Chp 3 Transport Layer

• 3.1 transport-layer VS network-layer
• 3.2 transport-layer services
  • Socket
  • Multiplexing and Demultiplexing
• 3.3 transport-layer protocol * TCP VS UDP
• 3.4 transport-layer segment
  • UDP segment format
  • TCP segment format
    • flow control
    • 3-way handshake
• 3.5 principles of reliable data transfer
  • reliable data transfer means..
  • 1. bit error <- checksum
    • how to detect bit error
    • how to make checksum
  • 2. packet loss <- ARQ
    • Automatic Repeat reQest
    • ARQ performance
    • ARQ methods
  • TCP reliable data transfer
    • Pipelined transmission
    • fast retransmissions
    • TCP timeout

---