Network Basics (CISCO Network Academy) 10/9

Learning Network

   Theory and Practice
   Catch up the latest technology

lecture 10/10

Cisco Network Academy

   E-Learning Package (3 million yen for first year, 600,000 yen per year)
   Project Oriented
   Actual management of CISCO Routers
       (too specific for CISCO routers)
   Router's setting is command line driven, not GUI base.

Cisco Network Academy (local access only)

What is LAN, WAN, Internet?

Cable is LAN. Long Cable is WAN.

Network and Computer

Internet is combination of LAN and WAN.

More recent technology

LAN is no longer simple cables, but the model still works in LAN, WAN and Internet.

Single LAN is a cable, which can broadcast and collide.

Network Devices

Point to Point (Cable)
Bus Connection (One speaker at a time)
Star Connection (Switch Technology)

What makes Network Local?

Broadcast
Collision

Broadcast Domain

Collision Domain

OSI 7 Layer

APSTNDP

  Please, Do Not Throw Sausage Pizza Away
  Physical, Datalink, Network, Transport, Session, Presentation, Application

   First 3 layers ( Physical, Datalink, Network) are the network.
   Upper 4 layers are software architectures/computer.

Physical Layer

   Cable
   Connector

Datalink Layer

   NIC ( Network Interface Circuit)
   Ethernet Packet
   Ethernet Address
   LAN

Network layer

   Internet
   TCP/IP
   Internet Address
   Routing
   WAN

Network Domain

   Local Area Network and Wide Area Network

Repeater

Switch, Bridge

Router

Physical Layer and Cabling

   Category 5 cable

Cabling

Network Design

Hierarchical Network Structure

Hosts and Networks