Transcript CCNA1 Version 3

CCNA1 Version 3
Module 2
Objectives
Original Microcomputers
Had No Way to Share Data
SneakerNet
Using Floppy Disks
to Exchange Data
LAN Allows Sharing
Within A Local Area
LANs Are Not Capable of
Handling Large Businesses
MANs and WANs
Became Necessary
Relative Size of
LANs and WANs
History of Telecommunications and the Internet
Networking Devices
Workstations
Networking Devices
NIC Cards
Networking Devices
PCMCIA Interfaces for
Notebooks
Networking Devices
End User Device Icons
Networking Devices
Device Icons
Networking Devices
Repeater
Networking Devices
Bridges
Networking
Devices
Switches
Networking
Devices
Switches
Physical Topologies
Teaching Topology
Computer Communication Protocols
LANs and LAN Devices
WANs and WAN Devices
MANs
Storage Area Network
Virtual Private Network (VPN)
Connections
VPN Technologies
Intranets and Extranets
Intranet and Extranet VPNs
Why is bandwidth Important?
Pipe Analogy for Bandwidth
Highway Analogy for Bandwidth
Units of Bandwidth
Maximum Bandwidths and
Length Limitations
WAN Services and Bandwidths
Variables that Might
Affect Performance
Transfer Time Calculations
Data Transfer Calculations
Audio Analogy for Bandwidth
Analyzing Network in Layers
Layer Communications
Benefits of the OSI Model
OSI Model
OSI Model
OSI Model
OSI Model
OSI Model
OSI Model
OSI Model
Peer-to-Peer Communications
Peer-to-Peer Communications
TCP Model
Common TCP/IP Protocols
Comparing OSI and TCP Models
Data Encapsulation