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This is a free application for everything under Computer Networking. More free resources and special offers on Computer Networking and Cyber Security training can be found on http://vip.CareerAcademy.com
A computer network is a group of computer systems and other computing hardware devices that are linked together through communication channels.

This facilitate communication and resource-sharing among a wide range of users.

Networks are commonly categorized based on their characteristics.

The chapters of the application are as follows:
Home

Application Layer
HTTP
FTP
DHCP
DNS
IMAP4
POP3
SMTP
SSH
TLS/SSL
TFTP


Presentation Layer

Session Layer

Transport Layer
Firewall
TCP
UDP
SCTP


Network Layer
Routers
IP
IPSec
ARP
ICMP
IGMP
RARP


Data Link Layer
Switches
Bridges
NIC
WAP


Physical Layer
Hub
Modems
Ethernet