Concepts for Midterm I

Chapter 1

• connection-oriented vs. connectionless services (1.2)
• circuit switching, packet switching, and virtual circuits (1.3)
• multiplexing in circuit-switched networks (1.3)
  • time-division multiplexing
  • frequency division multiplexing
• bandwidth and transmission rate (1.3)
• internet service providers and related concepts (1.5)
  • backbone (tier-1) networks
  • points of presence
• components of delay across a network link (1.6)
  • processing delay
  • queuing delay
  • transmission delay
  • propagation delay
• networking layers and their primary functions (1.7)
  • application
  • transport (TCP and UDP)
  • network (IP)
  • link
  • physical

Chapter 2

• client and server roles (2.1)
• hypertext transfer protocol (2.2)
  • GET, POST, and HEAD requests
  • request and reply structures
  • web caches
• file transfer protocol (2.3)
• mail protocols (2.4)
  • simple network mail protocol
  • post office protocol
  • internet mail access protocol
• domain name system (2.5)
  • root servers, top-level domain servers, and local servers
  • resource records and types
  • caching
• peer-to-peer protocols (2.6)
  • query flooding
  • overlay networks
  • hiierarchical overlay networks
• sockets (2.7-2.9)
• stateful vs. stateless servers (2.3)
• in-band vs. out-of-band control (2.3)
• push vs. pull protocols (2.4)
• distributed databases and administration (2.5)