Network Basics
-
Upload
kelly-kellum -
Category
Technology
-
view
110 -
download
0
Transcript of Network Basics
![Page 1: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/1.jpg)
THE INTERNET AND NETWORKS
![Page 2: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/2.jpg)
NETWORKS• Server – a computer on the network that provides services to the other computers
• Client – a computer on the network that a user interacts with
• Node – a computer or other device connected to the network
• LAN (Local Area Network) – Computers in one location connected together
• WAN (Wide Area Network) – multiple LANs; geographically separated
• VPN (Virtual Private Network) – a private connection to a LAN over the internet
• Protocol – an agreed-upon standard for performing some function
![Page 3: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/3.jpg)
LAN (PEER-TO-PEER)
Client/ Server
Client/ Server
Client/ Server
Client/ Server
Client/ Server
Client/ Server
![Page 4: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/4.jpg)
LOCAL AREA NETWORK (LAN) (CLIENT/SERVER)
Server
Switch
Scanner w/Server
PrintServer
Client
Client
Client
![Page 5: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/5.jpg)
WIDE AREA NETWORK (WAN)
![Page 6: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/6.jpg)
VIRTUAL PRIVATE NETWORK (VPN)
![Page 7: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/7.jpg)
TRANSFERRING DATA
![Page 8: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/8.jpg)
IP ADDRESS• Example: 192.168.1.1
• Abbreviation for 32-bit number
• Every website and every device on the internet has a unique IP address
• Computers inside LANs usually have private IP addresses
• Provides security – other computers on the internet can’t see them directly)
• Conserves IP addresses
• 10.0.0.0 – 10.255.255.255
• 172.16.0.0 – 17.31.255.255
• 192.168.0.0 – 192.168.255.255
• Static IPs never change
• Dynamic IPs change periodically
• Server can assign them (DCHP)
![Page 9: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/9.jpg)
PACKETS
DataHeader Trailer
Destination Address
Source Address
Packet number
Protocols
Time to Live (TTL)
Document
Photo
Web page
End of packet
Error Correction
![Page 10: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/10.jpg)
CONNECTING THE NETWORK
![Page 11: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/11.jpg)
LAN TYPES (TOPOLOGIES)
![Page 12: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/12.jpg)
TRAFFIC CONTROL – SWITCH• IDs each node by MAC address
• Packets addressed to a specific node are sent only to that node
• Broadcast packets accepted
![Page 13: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/13.jpg)
TRAFFIC CONTROL – HUB• Gets packets from nodes
• Sends to every other node
• Nodes ignore what isn’t addressed to them
![Page 14: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/14.jpg)
TRAFFIC CONTROL - ROUTER• Does not accept broadcast
packets
• Connects LAN to another network
• Network address translation (NAT), firewall
• Packets addressed to node not on the LAN are dropped
![Page 15: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/15.jpg)
CONNECTIONS – CAT 5
![Page 16: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/16.jpg)
CONNECTIONS - COAXIAL
![Page 17: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/17.jpg)
CONNECTIONS – FIBEROPTIC
![Page 18: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/18.jpg)
CONNECTIONS - WIRELESS
![Page 19: Network Basics](https://reader030.fdocuments.in/reader030/viewer/2022032502/55b791b4bb61ebff268b46b6/html5/thumbnails/19.jpg)
LETS BUILD A NETWORK!