4.1 Week 1

4.1 Week 1

4.1.1 Chapter 1 -- Introduction to Networking

• Computers, a short history
• Computer internals: Mainframes & supercomputers to embedded systems. Processors, busses, chip-sets, memory (RAM, ROM, Flash) , PCI, PCMCIA, NICs, I/O subsystem, video, keyboard, mouse, timer, interrupts, hard disk drives, optical drives, tape drives, USB, Firewire.
• The PC, a short history: Altair, Apple, IBM, Compaq, HP, Dell, ... And portable devices
• Networks, a short history
• The Internet, a short history & IP addresses
• Cisco Systems & Juniper Networks
• Number systems -- Base 2, Binary; Base 10, Decimal; and Base 16, Hexadecimal
• Boolean logic and expressions
• Troubleshooting: ping & traceroute (tracert. localhost, NIC, gateway, remote.
• Standard SI prefixes

4.1.2 Chapter 2 -- Networking Fundamentals

• LANs, CANs, MANs, WANs. (Local, Campus, Metropolitan, Wide)
• Networking hardware: NICs, Hubs, Switches, Routers
• Protocols
• TCP/IP (Transmission Control Protocol/Internet Protocol)
• Internet protocols: HTTP, telnet, ssh, ftp, tftp, html, ICMP (Internet Control Message Protocol), ... -- RFCs (Request for Comment)
• VPN - Virtual Private Networks
• Intranets, Extranets.
• Data rate bits/second or bytes/second
• Bandwidth -- network and analog. Hz, S/N ratio & 3db points, A Mathematical Theory of Communication by Claude E. Shannon.
• Bandwidth vs. Distance. Bits vs. Bytes. Computing download times.
• Throughput. Data transfer rates. Error correction. Re-transmission. Lost packets.
• Network topologies. Star, ring, mesh, ...
• Encapsulation
• OSI Model  

  Layer		Network
  Layer 7: Application
  Layer 6: Presentation
  Layer 5: Session
  	Data
  Layer 4: Transport
  	Segments
  Layer 3: Network
  	Packets
  Layer 2: Data Link
  	Frames
  Layer 1: Physical
  	Bits

• TCP/IP model  

  Layer		Network
  Application
  	Data
  Transport
  	Segments
  Internet
  	Packets
  Network Access
  	Bits

• OSI vs TCP/IP Model  

  OSI	TCP/IP
  Layer 7: Application
  Layer 6: Presentation	Application
  Layer 5: Session
  Layer 4: Transport	Transport
  Layer 3: Network	Internet
  Layer 2: Data Link	Network Access
  Layer 1: Physical

4.1 Week 1